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DOSH Forklift Operator study materials
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DOSH Forklift Operator practice questions

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Question 1Legislation, Regulations and Operator Responsibilities

Under Malaysia's Occupational Safety and Health (Amendment) Act 2022, which party holds the primary general duty to ensure the safety, health and welfare of persons at work involving forklifts?

  1. The local authority, by default
  2. The forklift supplier, in all circumstances
  3. The employer, so far as is practicable Correct answer.
  4. The employee, exclusively

Explanation

The Occupational Safety and Health Act 1994, as amended in 2022, places the general duty on the employer to ensure so far as is practicable the safety, health and welfare of employees at work. The duty is qualified by practicability, which weighs the likelihood and severity of harm against the cost and effort of control. Other parties carry their own duties but do not displace the employer's primary obligation.

Question 2Legislation, Regulations and Operator Responsibilities

What does the phrase 'so far as is practicable' require of an employer managing forklift operations?

  1. Actions judged reasonable after weighing risk against cost, time and effort Correct answer.
  2. Only actions that cost nothing to implement
  3. Every conceivable control regardless of feasibility
  4. Controls that have already been adopted by other companies

Explanation

Practicability means the employer must do what is reasonably able to be done, judged by weighing the likelihood and severity of harm against the cost, time and effort of the available control. It is not limited to free measures, nor does it demand impossible perfection. The test is objective and depends on the circumstances of each workplace.

Question 3Legislation, Regulations and Operator Responsibilities

Under the Factories and Machinery Act 1967, which instrument governs the certification and inspection of forklifts used in factories?

  1. The Factories and Machinery (Building Operations and Works of Engineering Construction) Regulations
  2. The Factories and Machinery (Notification, Certificate of Fitness and Inspection) Regulations Correct answer.
  3. The Factories and Machinery (Electric Passenger and Goods Lift) Regulations
  4. The Factories and Machinery (Personnel Lifting) Regulations

Explanation

The Notification, Certificate of Fitness and Inspection Regulations require prescribed machinery, including certain forklifts and hoisting equipment, to be notified and to hold a valid certificate of fitness inspected by a competent person. The other instruments address different categories of plant or work. Correct classification matters because it determines inspection frequency and certification obligations.

Question 4Legislation, Regulations and Operator Responsibilities

A new forklift is delivered to a factory and put into service. Under the Factories and Machinery Act framework, what must the occupier do before it is used for material handling?

  1. Rely on the supplier's warranty as proof of safety
  2. Wait until the next annual general inspection to declare it
  3. Only record the purchase in the asset register
  4. Notify the authority and obtain a certificate of fitness where the machinery is prescribed Correct answer.

Explanation

Where the forklift falls within the prescribed class of machinery, the occupier must notify the relevant authority and obtain a certificate of fitness following inspection by a competent person before it is operated. A supplier warranty is a commercial document and does not satisfy statutory registration. The obligation is proactive and cannot be deferred to a general annual inspection.

Question 5Legislation, Regulations and Operator Responsibilities

For ordinary employment, what is the minimum age at which a worker may be employed to operate a forklift in a Malaysian factory?

  1. Twenty-one years
  2. Eighteen years Correct answer.
  3. Fourteen years
  4. Sixteen years

Explanation

The minimum age for ordinary employment as a forklift operator is eighteen. Forklifts are treated as hazardous machinery for children and young persons, and DOSH guidance requires adult operators. Appropriate training and competence are also required.

Question 6Legislation, Regulations and Operator Responsibilities

Who may lawfully operate a forklift in a factory environment under Malaysian law?

  1. A person holding a valid certificate of competency for the machine and who is authorised by the occupier Correct answer.
  2. Any worker who has watched a colleague operate the machine
  3. Only the factory manager personally
  4. Any employee over sixteen regardless of training

Explanation

Operation of prescribed machinery requires a valid certificate of competency issued after training and assessment, together with authorisation from the occupier to use that specific equipment. Observation alone does not confer competence or legal authority. Being over the minimum age does not substitute for certification.

Question 7Legislation, Regulations and Operator Responsibilities

An operator's certificate of competency for forklift operation has expired. What is the correct course of action?

  1. Continue operating until the next convenient renewal date
  2. Cease operating the forklift until the certificate is renewed Correct answer.
  3. Operate only during daylight hours
  4. Ask a colleague to sign the daily checklist on their behalf

Explanation

Operating prescribed machinery without a valid certificate breaches the statutory requirement and removes the employer's assurance of competency. The operator must stop operating until the certificate is renewed through the proper process. Internal workarounds do not cure the legal deficiency.

Question 8Legislation, Regulations and Operator Responsibilities

What is the primary purpose of a daily pre-use inspection of a forklift under the operator's responsibilities?

  1. To satisfy the maintenance contractor's invoice requirements
  2. To record the operator's attendance
  3. To measure fuel consumption trends
  4. To detect defects and hazards before the machine is used in the shift Correct answer.

Explanation

Pre-use checks are a legal and practical control requiring the operator to identify defects such as damaged forks, faulty brakes, leaks or worn tyres before work begins. Defects found must be reported and the machine taken out of service if unsafe. The check is a safety control, not an administrative or accounting exercise.

Question 9Legislation, Regulations and Operator Responsibilities

During a pre-use check an operator finds the forklift's horn is not working. What should the operator do?

  1. Continue using the machine but avoid pedestrians
  2. Replace the horn personally without informing anyone
  3. Tag the machine as defective, report it, and not use it until repaired Correct answer.
  4. Use the machine carefully and report the fault at the end of the week

Explanation

A faulty horn removes a key warning device needed to alert pedestrians and other workers. The operator must isolate the machine, report the defect and refrain from use until it is repaired and confirmed serviceable. Self-repair without authorisation may void warranties and bypass maintenance controls.

Question 10Legislation, Regulations and Operator Responsibilities

Under the OSH Act, what is an employee's duty regarding hazards they create or become aware of while operating a forklift?

  1. To take reasonable care of their own and others' safety and report hazards to the employer Correct answer.
  2. To resolve the hazard without informing management
  3. To remain silent to avoid blame
  4. To delegate the duty to a supervisor

Explanation

Employees must take reasonable care for the safety of themselves and others affected by their acts or omissions, and must cooperate with the employer's safety arrangements. This includes reporting hazards and defects. Silence or unilateral action undermines the employer's ability to control risk.

Question 11Legislation, Regulations and Operator Responsibilities

A forklift operator is asked to lift a load that exceeds the machine's rated capacity. What is the operator's correct response under their legal duties?

  1. Lift the load only if the supervisor insists
  2. Lift the load slowly to reduce the risk
  3. Refuse the lift and report the overload request Correct answer.
  4. Lift the load with another worker counterbalancing the rear

Explanation

Operating beyond the rated capacity is a foreseeable cause of tip-over and serious injury, and the operator has a duty not to expose themselves or others to risk. The correct action is to refuse the unsafe lift and report the request so the load can be handled safely. Supervisor insistence does not legalise an unsafe act.

Question 12Legislation, Regulations and Operator Responsibilities

Which document should an employer use to formally record the hazards, risks and controls associated with forklift operations in a warehouse?

  1. A purchase order
  2. A training brochure
  3. A hazard identification, risk assessment and risk control record Correct answer.
  4. An employee newsletter

Explanation

The OSH Act requires employers to identify hazards, assess risks and implement controls, and this is documented in a hazard identification, risk assessment and risk control record. This record demonstrates the reasoning behind controls and supports review. Commercial and promotional documents do not satisfy the requirement.

Question 13Legislation, Regulations and Operator Responsibilities

What is the role of a safety and health committee in relation to forklift operations at a workplace?

  1. To take over the employer's statutory duties
  2. To prosecute operators who breach procedures
  3. To review incidents, inspections and risk controls and make recommendations to the employer Correct answer.
  4. To issue operator certificates of competency

Explanation

Safety and health committees are consultative bodies that review workplace safety matters, including forklift incidents and inspection findings, and recommend improvements to the employer. They do not issue certificates, prosecute or assume the employer's duties. Their effectiveness depends on management acting on their recommendations.

Question 14Legislation, Regulations and Operator Responsibilities

An employee is injured when a forklift load falls from the forks. What is the employer's notification obligation under the OSH Act?

  1. No notification is required if the injury is minor
  2. Wait for the employee to lodge a complaint
  3. Notify the relevant authority of the accident as required, in addition to internal reporting Correct answer.
  4. Notify only the insurance company

Explanation

The OSH Act requires employers to notify the relevant authority of accidents, dangerous occurrences and occupational diseases as prescribed, alongside internal investigation and reporting. Notification is a legal duty independent of any insurance claim. Waiting for a complaint is not a lawful substitute.

Question 15Legislation, Regulations and Operator Responsibilities

Which statement best describes the operator's responsibility for pedestrians while driving a forklift in a shared workspace?

  1. The operator may drive faster where pedestrians are trained
  2. The operator must use warning devices, maintain a safe speed and follow designated routes to protect pedestrians Correct answer.
  3. Pedestrians are solely responsible for keeping clear of forklifts
  4. The operator need only sound the horn when reversing

Explanation

Forklift operators must manage the interaction with pedestrians by using warning devices, controlling speed, maintaining visibility and following traffic management arrangements such as designated routes and exclusion zones. Pedestrians also have duties, but the operator cannot rely on them alone. Speed should be governed by the conditions, not by pedestrian training.

Question 16Legislation, Regulations and Operator Responsibilities

What does the requirement to provide 'information, instruction, training and supervision' mean for forklift operators?

  1. Supervision is unnecessary once a certificate is held
  2. A one-off induction video is always sufficient
  3. Training is only needed after an accident occurs
  4. Operators must be trained, informed of the risks and supervised to ensure safe work practices Correct answer.

Explanation

The OSH Act requires employers to provide the information, instruction, training and supervision necessary to ensure safety, which for forklifts includes site-specific hazards, safe operating procedures and ongoing supervision. A one-off video cannot cover the range of risks or changing conditions. Training and supervision continue after certification.

Question 17Legislation, Regulations and Operator Responsibilities

A forklift operator observes that a colleague is operating a machine with a known brake defect. What is the most appropriate action under the operator's duties?

  1. Wait until the next safety committee meeting to raise it
  2. Intervene to stop the unsafe use and report the defect to the supervisor Correct answer.
  3. Ignore it because it is not their machine
  4. Record the observation in a personal diary only

Explanation

Employees must take reasonable care for others affected by work activity, which includes intervening when a serious hazard is evident and escalating the matter promptly. A known brake defect presents an immediate risk of collision or loss of control. Delayed or private recording does not prevent harm.

Question 18Legislation, Regulations and Operator Responsibilities

Which of the following best describes the legal status of an employer's written safe operating procedure for forklifts?

  1. It is optional and has no bearing on legal duties
  2. It replaces all statutory obligations once written
  3. It applies only to new employees
  4. It is evidence of how the employer intends to control risks and supports compliance with the general duty Correct answer.

Explanation

A written safe operating procedure documents the controls the employer has chosen to manage forklift risks and demonstrates how the general duty is being discharged. It does not override statute and applies to all operators regardless of experience. Its value depends on implementation, training and review.

Question 19Legislation, Regulations and Operator Responsibilities

A forklift is used to lift a person on the forks using a pallet, without a approved working platform. How does this sit with the operator's legal responsibilities?

  1. It is acceptable if the person holds onto the mast
  2. It is acceptable if another worker watches
  3. It is acceptable for short durations under two minutes
  4. It is unsafe and should not be done; persons must only be lifted using approved equipment and procedures Correct answer.

Explanation

Lifting persons on forks or pallets exposes them to falls and crush injuries and is not a safe system of work. Persons may only be raised using purpose-designed working platforms or other approved equipment, with the appropriate risk controls. Holding the mast or relying on a spotter does not make the practice safe.

Question 20Legislation, Regulations and Operator Responsibilities

What is the purpose of a forklift's data plate or capacity plate in relation to operator duties?

  1. To show the machine's fuel type only
  2. To record the operator's shift times
  3. To display the machine's purchase price
  4. To state the rated capacity and load centre so the operator can confirm safe loads Correct answer.

Explanation

The data plate specifies the rated capacity at a stated load centre and may show capacity reductions with attachments, allowing the operator to determine whether a load is safe. Operators must check it before lifting unfamiliar loads. It is a safety information device, not an administrative record.

Question 21Legislation, Regulations and Operator Responsibilities

An operator is directed to drive a forklift on a sloping ramp with a raised load. What is the correct legal and safe response?

  1. Keep the load low, travel in the correct direction and follow the site's slope procedure or refuse if unsafe Correct answer.
  2. Ask a pedestrian to guide the machine from the front
  3. Travel with the load raised and rely on the brakes
  4. Reverse down the slope at speed

Explanation

Carrying a raised load on a slope increases the risk of tip-over and loss of load, so the load must be kept low and the machine operated in accordance with the site's slope procedure, typically travelling with the load uphill. The operator must refuse the task if the conditions cannot be made safe. Pedestrians should not guide machines from the front.

Question 22Legislation, Regulations and Operator Responsibilities

Which of the following is a key responsibility of the employer regarding forklift maintenance under the OSH Act?

  1. Leaving maintenance decisions to operators
  2. Maintaining plant and equipment in a safe condition through planned inspection and repair Correct answer.
  3. Recording maintenance only when requested by an insurer
  4. Repairing equipment only after a breakdown occurs

Explanation

The employer must ensure plant and equipment are maintained in a safe condition, which requires planned inspection, servicing and repair by competent persons. Reactive repair after breakdown is insufficient and exposes operators to risk. Maintenance records support verification and review.

Question 23Legislation, Regulations and Operator Responsibilities

What does the requirement for operators to be 'authorised' by the occupier add to holding a certificate of competency?

  1. It replaces the need for training
  2. It transfers legal liability to the operator
  3. It confirms the operator has paid a fee
  4. It confirms the operator is permitted to use the specific machine on that site under its rules Correct answer.

Explanation

Certification establishes general competence, while authorisation confirms the occupier has permitted the individual to operate the particular machine on that site, having regard to site rules, familiarisation and local hazards. Authorisation does not replace training or shift liability away from the employer. Both elements are required for lawful operation.

Question 24Legislation, Regulations and Operator Responsibilities

A near miss occurs when a forklift narrowly avoids striking a pedestrian. How should this be treated under the operator's reporting duties?

  1. As a disciplinary matter for the pedestrian only
  2. As a reportable safety event to be recorded and investigated to prevent recurrence Correct answer.
  3. As a routine event requiring no action because no one was hurt
  4. As a matter to be discussed only informally between the operator and the pedestrian

Explanation

Near misses are leading indicators of risk and should be recorded and investigated so that the underlying causes, such as poor traffic management or blind corners, can be corrected. Treating them as inconsequential allows the same hazard to escalate into a serious injury. Reporting near misses is part of the operator's duty to cooperate with safety arrangements.

Question 25Forklift Types, Components and Stability Principles

On a counterbalanced forklift, what is the primary purpose of the counterweight at the rear of the chassis?

  1. It increases the hydraulic lifting force available at the mast
  2. It absorbs shock loads transmitted through the overhead guard
  3. It balances the load moment so the truck stays stable when lifting at the rated load centre Correct answer.
  4. It drives the rear steer axle to improve traction

Explanation

The counterweight creates a moment behind the front axle that opposes the forward tipping moment produced by the load. Stability depends on the load moment staying within the truck's rated capacity and load centre. It has no role in hydraulic power, steering drive, or overhead-guard shock absorption.

Question 26Forklift Types, Components and Stability Principles

A forklift is rated 2,000 kg at a 500 mm load centre. If the same load is picked up with its centre 700 mm from the fork face, what happens to the safe capacity?

  1. It stays the same provided the mast is fully tilted back
  2. It decreases because the load moment about the front axle increases Correct answer.
  3. It stays at 2,000 kg because the load weight has not changed
  4. It increases because the load is further forward of the mast

Explanation

Capacity ratings are tied to a stated load centre, and moving the centre further out increases the tipping moment for the same weight. The truck must therefore be de-rated, as shown on the capacity plate. Tilting back does not restore the lost margin.

Question 27Forklift Types, Components and Stability Principles

Which statement correctly describes the longitudinal stability triangle concept for a counterbalanced forklift?

  1. The triangle is formed by the fork tips, the carriage and the load backrest
  2. The triangle is formed by the two rear wheels and the mast base
  3. The triangle is formed by the two front wheels and the pivot point of the steer axle Correct answer.
  4. The triangle is formed by the counterweight, the mast and the overhead guard

Explanation

On a counterbalanced truck the stability triangle is bounded by the centre of each front wheel and the steer-axle pivot point. The combined centre of gravity of truck and load must stay inside this triangle. Exceeding it in any direction causes tipping.

Question 28Forklift Types, Components and Stability Principles

A reach truck differs from a counterbalanced forklift mainly because its outrigger legs and reach mechanism allow it to:

  1. Travel at higher speed on public roads
  2. Handle loads with the mast retracted inside the wheelbase for narrow-aisle work Correct answer.
  3. Operate without a rated capacity plate
  4. Lift loads without any hydraulic cylinders

Explanation

Reach trucks place the mast and load inside the outrigger footprint and extend the reach carriage forward, which suits narrow aisles and high racking. This geometry changes the stability profile compared with a counterbalanced truck. Every truck still requires a capacity plate and hydraulic lift.

Question 29Forklift Types, Components and Stability Principles

Why does a rough-terrain forklift typically use large pneumatic tyres and a wide track?

  1. To allow the truck to be driven with the load raised during travel
  2. To lower the centre of gravity and spread the load over soft ground Correct answer.
  3. To increase the maximum lift height of the mast
  4. To reduce the hydraulic pressure needed for lifting

Explanation

Large pneumatic tyres and a wide track improve flotation and lateral stability on uneven or soft surfaces. They help keep the combined centre of gravity low and within the stability base. They do not change the hydraulic system or permit travelling with a raised load.

Question 30Forklift Types, Components and Stability Principles

What does the data plate (capacity plate) on a forklift normally state?

  1. The service interval and the tyre pressure
  2. The battery voltage and the horn sound level
  3. The operator's licence number and the site speed limit
  4. The rated capacity at specified load centres and lift heights, plus truck weight Correct answer.

Explanation

The data plate gives the truck's rated capacity for stated load centres and, where applicable, mast height, together with unladen weight and tyre type. Operators must check it before handling an unfamiliar load. It does not record licence, service, or battery details.

Question 31Forklift Types, Components and Stability Principles

When a forklift turns while carrying a raised load, which stability risk increases most?

  1. Lateral tipping toward the outside of the turn Correct answer.
  2. Hydraulic cylinder seal failure
  3. Longitudinal tipping over the front axle
  4. Brake fade on the steer axle

Explanation

Raising the load lifts the combined centre of gravity, and cornering adds centrifugal force acting outward. Together these push the centre of gravity toward the side of the stability triangle, risking a sideways overturn. Front-axle tipping is mainly a longitudinal-load issue.

Question 32Forklift Types, Components and Stability Principles

What is the function of the load backrest extension on the carriage?

  1. It provides the main lifting force for the carriage
  2. It increases the rated capacity of the truck
  3. It stops the load from moving backward into the mast or operator Correct answer.
  4. It locks the forks at a fixed spread

Explanation

The load backrest is a vertical guard above the forks that restrains the load from shifting rearward toward the mast and operator. It is a safety attachment and does not change lifting capacity. Fork spread is set by the carriage and fork positioning, and lift force comes from the cylinders.

Question 33Forklift Types, Components and Stability Principles

A forklift fitted with a side-shift attachment is used to handle a load at the rated capacity shown on the base plate. What should the operator assume?

  1. The capacity may be reduced and the attachment's own rating plate must be checked Correct answer.
  2. The capacity only matters when the load is raised above head height
  3. The capacity is increased because side-shift improves balance
  4. The capacity is unchanged because side-shift adds no weight

Explanation

Attachments add weight and shift the load centre forward, so the combined capacity is normally lower than the base truck rating. A separate rating plate for the attachment configuration must be consulted. Capacity always matters, not only at height.

Question 34Forklift Types, Components and Stability Principles

Which component transfers the lifting force from the hydraulic cylinder to the inner mast channel and carriage?

  1. The steer-axle pivot
  2. The lift chain and sheave arrangement Correct answer.
  3. The tilt cylinder
  4. The overhead guard

Explanation

In a typical mast, the lift cylinder raises the inner channel, and chains running over sheaves raise the carriage at roughly twice the cylinder stroke. Chains and sheaves are therefore the force-transmitting link. Tilt cylinders control mast angle, while the pivot and guard are unrelated to lift transmission.

Question 35Forklift Types, Components and Stability Principles

Why must a forklift's load be tilted back slightly before travelling?

  1. To reduce wear on the lift chains
  2. To move the load centre closer to the front axle and improve stability Correct answer.
  3. To increase the lifting speed on the next lift
  4. To allow the load to be carried above the mast height

Explanation

Tilting the mast back brings the load's centre of gravity closer to the truck's front axle, reducing the forward tipping moment. This is why travel should occur with the load low and tilted back. Tilt does not affect lift speed or chain wear, and the load must stay low.

Question 36Forklift Types, Components and Stability Principles

A pallet is loaded so that its centre of gravity is offset well to the right of the forklift's centreline. What is the most likely consequence?

  1. The combined centre of gravity shifts toward the side, reducing lateral stability Correct answer.
  2. The rated capacity automatically increases on the right side
  3. The truck becomes more stable because the load is spread over one fork
  4. The mast will tilt forward without operator input

Explanation

An off-centre load moves the combined centre of gravity sideways, closer to the edge of the stability triangle. This reduces the margin against lateral overturning, especially during turns. Capacity ratings assume a centred load, so an offset load effectively de-rates the truck.

Question 37Forklift Types, Components and Stability Principles

What is the main stability difference between a three-wheel counterbalanced forklift and a four-wheel counterbalanced forklift?

  1. The four-wheel truck cannot turn in narrow aisles at all
  2. The three-wheel truck carries its counterweight at the front
  3. The three-wheel truck pivots on a single steer wheel, giving a smaller stability base and greater sensitivity to load position Correct answer.
  4. The three-wheel truck has no stability triangle

Explanation

A three-wheel truck steers on a single rear wheel, so its stability triangle is smaller than that of a four-wheel truck. This makes lateral stability more sensitive to load offset and turning speed. Both types rely on the same stability-triangle principle and carry the counterweight at the rear.

Question 38Forklift Types, Components and Stability Principles

Which of these is a correct description of the overhead guard on a counterbalanced forklift?

  1. It is a lifting point for crane handling of the truck
  2. It is designed to support the weight of a lifted load
  3. It replaces the need for a seat belt
  4. It is designed to withstand the impact of a falling object and protect the operator Correct answer.

Explanation

The overhead guard is a falling-object protective structure rated to protect the operator from impact by objects falling onto the truck. It is not a load-bearing member for the load or a lifting point. It does not remove the requirement to wear a seat belt where fitted.

Question 39Forklift Types, Components and Stability Principles

During a lift, an operator notices the rear wheels becoming light and the truck beginning to pivot forward. What does this indicate?

  1. The steer axle is misaligned
  2. The parking brake is dragging
  3. The hydraulic system is over-pressurised
  4. The load moment is approaching or exceeding the forward stability limit Correct answer.

Explanation

When the rear wheels lift, the combined centre of gravity is moving toward the front edge of the stability triangle. This is a warning that the forward tipping moment is at or beyond the safe limit. The operator should lower and reduce the load immediately.

Question 40Forklift Types, Components and Stability Principles

What does the load centre distance of a forklift rating refer to?

  1. The distance from the drive wheel to the fork heel
  2. The distance between the two forks of the carriage
  3. The horizontal distance from the fork face to the centre of gravity of the load Correct answer.
  4. The vertical height of the mast when fully raised

Explanation

Load centre is measured horizontally from the vertical fork face to the load's centre of gravity, commonly 500 mm or 600 mm in ratings. The further out the centre, the lower the permissible load. It is not a wheelbase, mast height, or fork spread measurement.

Question 41Forklift Types, Components and Stability Principles

Why is a forklift's steer axle mounted so that it can pivot (oscillate) on a four-wheel counterbalanced truck?

  1. To increase the lifting height of the mast
  2. To keep all drive wheels in contact with uneven ground and maintain stability Correct answer.
  3. To allow the truck to be steered by the front wheels
  4. To reduce the weight of the counterweight

Explanation

An oscillating steer axle lets the truck keep both front drive wheels on the ground over uneven surfaces, preserving traction and stability. The steer axle is a non-driven axle and does not affect lift height. Counterweight mass is set by the capacity design.

Question 42Forklift Types, Components and Stability Principles

A load is picked up with the forks spread too narrowly, so the pallet sags between them. How does this affect stability?

  1. The load's centre of gravity may shift lower and forward unpredictably, reducing stability Correct answer.
  2. The forks become stronger because the load is concentrated
  3. The rated capacity increases because the load is supported centrally
  4. The load centre moves closer to the fork face and stability improves

Explanation

A sagging pallet can shift its centre of gravity and move the load forward or sideways, changing the load moment. This can reduce stability and increase the risk of the load slipping. Forks should be spread to fully support the pallet.

Question 43Forklift Types, Components and Stability Principles

Which truck type is designed primarily for moving loads over rough ground and is characterised by large pneumatic tyres and a high ground clearance?

  1. Reach truck
  2. Order picker
  3. Rough-terrain forklift Correct answer.
  4. Pallet jack

Explanation

Rough-terrain forklifts are built for uneven outdoor surfaces, using large pneumatic tyres and high clearance. Order pickers and reach trucks are warehouse machines for smooth floors. Pallet jacks are low-lift manual or powered trucks for pallets.

Question 44Forklift Types, Components and Stability Principles

A forklift's capacity plate shows 1,800 kg at 500 mm load centre and 600 mm mast load centre, but the truck is fitted with a 1,200 mm fork extension. What is the correct action?

  1. Use the plate capacity because fork extensions are not mentioned on it
  2. Reduce the load according to the extended load centre and check the manufacturer's guidance for extensions Correct answer.
  3. Use the extensions only when the load is below 1,000 kg
  4. Increase the counterweight to compensate for the extensions

Explanation

Fork extensions move the load centre further from the fork face, increasing the tipping moment and reducing safe capacity. The operator must de-rate the load and follow the manufacturer's instructions for the extension. Adding counterweight or using an arbitrary weight limit is not acceptable.

Question 45Forklift Types, Components and Stability Principles

What is the purpose of the tilt cylinders on a forklift mast?

  1. To change the forward and backward angle of the mast Correct answer.
  2. To raise and lower the carriage along the mast
  3. To extend the reach carriage forward
  4. To rotate the forks sideways

Explanation

Tilt cylinders control the mast angle, allowing the load to be tilted back for travel and forward for placement. Lifting is done by the lift cylinder and chains. Reach and fork rotation are functions of separate attachments.

Question 46Forklift Types, Components and Stability Principles

Which factor most directly reduces a counterbalanced forklift's resistance to forward tipping during a lift?

  1. Keeping the forks level during travel
  2. Lowering the load to travel height
  3. Tilting the mast back before lifting
  4. Increasing the load weight at a fixed load centre Correct answer.

Explanation

The forward tipping moment equals load weight multiplied by the horizontal distance from the front axle, so increasing weight at a fixed load centre raises the moment. Lowering the load and tilting back both reduce the moment and improve stability. Levelling the forks affects load retention, not the tipping moment.

Question 47Forklift Types, Components and Stability Principles

How does raising the load height affect a counterbalanced forklift's stability?

  1. It increases the rated capacity because the load is higher
  2. It has no effect on stability as long as the load is within capacity
  3. It raises the combined centre of gravity, reducing stability and increasing the risk of overturn Correct answer.
  4. It lowers the combined centre of gravity and improves stability

Explanation

Raising the load lifts the combined centre of gravity, moving it closer to the boundaries of the stability triangle and reducing the margin against tipping. This is why loads should be carried low. Capacity is not increased by lifting higher.

Question 48Forklift Types, Components and Stability Principles

A forklift is parked on a slope and the operator leaves it. What is the correct procedure regarding the truck's stability and security?

  1. Lower the forks, apply the parking brake, and chock the wheels if the slope is significant Correct answer.
  2. Point the truck downhill with the load raised and the parking brake off
  3. Leave the engine running and rely on the hydraulic system to hold the load
  4. Leave it in neutral with the forks raised for visibility

Explanation

A parked forklift should have the forks lowered, the parking brake applied, and the controls neutralised. On a significant slope, wheel chocks add security against rolling. Leaving forks raised or relying on hydraulics creates a serious hazard.

Question 49Forklift Types, Components and Stability Principles

Which statement about the effect of tyre type on forklift stability is correct?

  1. Pneumatic tyres eliminate the need for a stability triangle
  2. Tyre type has no effect on stability or capacity ratings
  3. Solid tyres always increase the rated load capacity
  4. Pneumatic tyres provide more cushioning but can reduce lateral stability compared with solid tyres Correct answer.

Explanation

Pneumatic tyres absorb shocks and suit uneven surfaces but their greater deflection can reduce lateral stiffness compared with solid tyres. Capacity plates are issued for specific tyre types, so changing tyre type can affect the rating. No tyre type removes the stability triangle.

Question 50Forklift Types, Components and Stability Principles

On a counterbalanced forklift, what does the stability triangle represent?

  1. The zone on the load chart where attachments may be used without derating
  2. The area on the ground covered by the mast when it is fully tilted forward
  3. The area bounded by the centre of the drive axle and the two steer wheels, within which the combined centre of gravity must stay Correct answer.
  4. The region behind the counterweight where ballast may be added

Explanation

The stability triangle is formed by the pivot point of the drive (front) axle and the two rear steer wheels. As long as the combined centre of gravity of the truck and load stays inside this triangle, the truck remains stable. If it moves outside, the truck tips about the nearest side of the triangle.