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Automotive Servicing NC I practice questions

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Question 1Workplace Communication and Occupational Health and Safety (OHS) Practices

In an automotive service workshop, which document formally authorizes a technician to perform a specific repair task and records the safety precautions agreed before work begins?

  1. A customer satisfaction survey
  2. A vehicle registration certificate
  3. A job order with a signed hazard briefing section Correct answer.
  4. A parts delivery receipt

Explanation

A job order identifies the task, the vehicle, and the assigned technician, and when it carries a signed hazard briefing it documents that risks and controls were communicated before work started. This makes it the workplace communication record that links authorization with OHS accountability. Delivery receipts, surveys, and registration papers serve commercial or legal purposes unrelated to task authorization.

Question 2Workplace Communication and Occupational Health and Safety (OHS) Practices

A technician finds a frayed live wire on a bench grinder in the service bay. Which action best reflects the hierarchy of control applied to electrical hazards?

  1. Post a small warning sign beside the grinder
  2. Tag the grinder out of service and isolate its power supply before repair Correct answer.
  3. Wear rubber gloves and continue using the grinder carefully
  4. Ask a co-worker to watch while the grinder is used

Explanation

Elimination and isolation rank above administrative and PPE controls, so removing the energy source and locking the equipment out is the strongest response to an electrical defect. Warning signs and observer arrangements leave the hazard live and rely on human behavior. Gloves alone do not protect against a faulty grinder under load.

Question 3Workplace Communication and Occupational Health and Safety (OHS) Practices

Which verbal exchange is the correct way to report a near-miss in the workshop so that it can be recorded and investigated?

  1. Write it in a personal notebook and keep it private
  2. Wait until the same event causes an injury before reporting
  3. Mention it to a workmate at the end of the shift only if asked
  4. Tell the supervisor immediately, describing what happened, where, and what prevented injury Correct answer.

Explanation

A near-miss is a free warning that a control failed, so it must be reported promptly to the person with authority to act. A complete report states the event, location, and the circumstances that prevented harm, which supports investigation and corrective action. Delaying, privatizing, or waiting for injury destroys the learning value of the event.

Question 4Workplace Communication and Occupational Health and Safety (OHS) Practices

During a toolbox talk, a supervisor explains a new lockout procedure for the hydraulic lift. Which communication practice best confirms that technicians understood the instruction?

  1. Email the procedure and assume it has been read
  2. Post the procedure on the bay wall without discussion
  3. Read the procedure aloud once and file the attendance sheet
  4. Ask each technician to demonstrate the lockout sequence and explain it back Correct answer.

Explanation

Understanding of a safety-critical procedure is verified by observable performance and teach-back, not by attendance or distribution. Demonstration catches gaps that a signed sheet cannot reveal. Emails and wall notices are passive channels that cannot confirm comprehension.

Question 5Workplace Communication and Occupational Health and Safety (OHS) Practices

Which PPE item is specifically required when grinding or cutting metal in the service bay to protect against flying particles?

  1. A dust mask
  2. Anti-vibration gloves
  3. Steel-toe boots
  4. Impact-rated safety goggles or a face shield Correct answer.

Explanation

Grinding and cutting generate high-velocity particles that can strike the eyes and face, so impact-rated eye and face protection is the specific control. Dust masks address inhalation, gloves address hand contact and vibration, and safety boots protect the feet from falling objects. Each protects a different body region and does not substitute for eye protection.

Question 6Workplace Communication and Occupational Health and Safety (OHS) Practices

A technician must lift a cylinder head from a low bench. Which body mechanics approach reduces the risk of musculoskeletal injury?

  1. Keep the legs straight and bend at the waist to reach the load quickly
  2. Bend the knees, keep the load close to the body, and lift with the legs while keeping the back straight Correct answer.
  3. Twist the torso while lifting to move the load sideways in one motion
  4. Hold the load at arm's length to keep it away from the clothing

Explanation

Keeping the load close and using the leg muscles with a neutral spine reduces the bending moment on the lower back. Twisting under load and lifting with straight legs concentrate force on the lumbar spine and are common causes of back injury. Holding a heavy part at arm's length greatly increases the load moment.

Question 7Workplace Communication and Occupational Health and Safety (OHS) Practices

Which statement correctly describes the purpose of a hazard identification and risk assessment before starting an engine tune-up?

  1. It replaces the need for PPE during the task
  2. It is only required after an accident has happened
  3. It identifies potential harm and decides controls before exposure occurs Correct answer.
  4. It guarantees that no incident can occur

Explanation

Risk assessment is a proactive process that identifies hazards, evaluates likelihood and severity, and sets controls before work begins. It complements rather than replaces PPE, and it is not a post-incident formality. No assessment can guarantee the absence of incidents, only reduce risk to an acceptable level.

Question 8Workplace Communication and Occupational Health and Safety (OHS) Practices

Which sign format is used in Philippine workplaces to indicate an immediate danger that requires stopping work, such as an energized panel?

  1. A red prohibition or danger sign with a clear stop message Correct answer.
  2. A yellow triangle warning of a general hazard
  3. A blue circular sign showing mandatory PPE
  4. A green rectangular sign showing an exit route

Explanation

Red is reserved for prohibition and danger, signaling a condition that must stop activity immediately. Green marks safe conditions such as exits, blue marks mandatory actions, and yellow triangles warn of hazards that require caution but not necessarily a stop. Matching sign color to meaning is essential for rapid comprehension.

Question 9Workplace Communication and Occupational Health and Safety (OHS) Practices

A customer speaks only a regional language and the technician must explain why a brake repair is urgent. Which approach best supports clear workplace communication?

  1. Hand over the written estimate without any verbal explanation
  2. Ask an untrained bystander to translate technical terms
  3. Speak faster and louder in the same language
  4. Use simple words, show the worn brake part, and confirm understanding by asking the customer to repeat the key point Correct answer.

Explanation

Plain language, visual evidence, and teach-back confirm that a safety-critical message was received correctly across a language barrier. Speaking louder does not improve comprehension, and a written estimate alone may not be understood. An untrained translator risks distorting technical content.

Question 10Workplace Communication and Occupational Health and Safety (OHS) Practices

Which practice is correct when using a two-way radio to coordinate a vehicle lift in a busy service bay?

  1. Use personal slang so other shops cannot understand
  2. Speak continuously so the channel stays occupied
  3. Rely on hand signals only and leave the radio off
  4. Use short standard phrases, identify the caller, and confirm each critical instruction Correct answer.

Explanation

Radio coordination works when messages are brief, the speaker is identified, and critical instructions are read back for confirmation. Continuous speech blocks other urgent traffic, and slang or codes invite misunderstanding. Hand signals alone are unreliable when sight lines are blocked.

Question 11Workplace Communication and Occupational Health and Safety (OHS) Practices

A container of solvent in the bay has lost its label. What is the correct OHS response?

  1. Pour it into the drain to avoid confusion
  2. Use it for cleaning since it was probably solvent
  3. Stop using it, place it in a labeled secondary container or treat it as unknown waste, and report to the supervisor Correct answer.
  4. Smell it to identify the chemical and then relabel it

Explanation

Unlabeled chemicals cannot be safely handled because the hazard information needed for controls is missing. The safe response is to stop use, secure the container, and escalate to a supervisor who can arrange identification or proper disposal. Smelling an unknown substance risks inhalation injury, and drain disposal is an environmental violation.

Question 12Workplace Communication and Occupational Health and Safety (OHS) Practices

Where should the safety data sheet for a brake cleaner be kept in the workshop?

  1. In a location accessible to all workers who handle the chemical, with the emergency information easy to reach Correct answer.
  2. Locked in the manager's office with no worker access
  3. In the customer waiting area for advertising purposes
  4. Attached to the product container itself only

Explanation

Safety data sheets must be readily accessible to every worker exposed to the chemical, including during emergencies when first-aid and spill information is needed. Locking them away or relying on a container label denies workers critical hazard data. The waiting area is not a work control point.

Question 13Workplace Communication and Occupational Health and Safety (OHS) Practices

A technician notices a small oil spill near the walkway. Which sequence best controls the slip hazard?

  1. Cover the spill with cardboard and continue working
  2. Ignore it because a cleaner will pass later
  3. Wipe it with a rag and leave the rag on the floor
  4. Barricade or mark the area, absorb the spill, clean the floor, and dispose of the waste correctly Correct answer.

Explanation

Effective spill control isolates the area first so others are not exposed, then removes the substance and restores the surface, with waste disposed of under environmental rules. Covering or leaving residue creates a hidden or recurring slip hazard. Deferring to others leaves the danger active during the interim.

Question 14Workplace Communication and Occupational Health and Safety (OHS) Practices

Which fire extinguisher class is appropriate for a fuel fire in the service bay?

  1. Class A extinguisher for ordinary combustibles only
  2. Class B extinguisher for flammable liquids Correct answer.
  3. Class D extinguisher for combustible metals
  4. Class K extinguisher for cooking oils

Explanation

Fuel and other flammable liquids are Class B fires, so a Class B-rated extinguisher such as dry chemical or foam is required. Class A covers paper and wood, Class D covers metal fires, and Class K is for commercial cooking media. Using the wrong class can spread the fire or fail to extinguish it.

Question 15Workplace Communication and Occupational Health and Safety (OHS) Practices

When should a technician use the emergency stop button on a dynamometer or lift system?

  1. Immediately when a person or equipment is at risk, without waiting for permission Correct answer.
  2. After logging the fault in the maintenance book
  3. Only after completing the current diagnostic reading
  4. Only when the supervisor is present in the bay

Explanation

Emergency stops exist to remove energy instantly when there is imminent danger, so they are used first and reported afterward. Delaying to finish a reading or to obtain permission defeats the purpose of the control. Documentation follows the safe stop, not the reverse.

Question 16Workplace Communication and Occupational Health and Safety (OHS) Practices

Which content belongs in a workplace emergency evacuation plan for an automotive workshop?

  1. The technician's tool inventory
  2. The price list for labor and parts
  3. Assembly point, exit routes, alarm signals, and assigned marshals Correct answer.
  4. The list of vehicles scheduled for service that day

Explanation

An evacuation plan must tell people where to go, how to get there, how they will be alerted, and who directs them. These elements allow an orderly exit under stress. Service schedules, pricing, and tool inventories are operational records with no role in evacuation.

Question 17Workplace Communication and Occupational Health and Safety (OHS) Practices

A worker is splashed in the eye with battery acid. What is the correct immediate first aid?

  1. Flush the eye with clean running water for at least 15 minutes and seek medical help Correct answer.
  2. Rub the eye with a dry cloth to remove the acid
  3. Close the eye and wait for the pain to subside
  4. Apply neutralizing chemicals directly to the eye

Explanation

Copious irrigation with clean water dilutes and removes the corrosive before it causes deeper tissue damage, and medical follow-up is required. Dry rubbing abrades the eye, and neutralizing agents can generate heat and further injury. Waiting allows the acid to keep burning tissue.

Question 18Workplace Communication and Occupational Health and Safety (OHS) Practices

Which communication behavior supports a respectful, harassment-free workshop when a new trainee joins the team?

  1. Use teasing nicknames to build camaraderie
  2. Exclude the trainee from toolbox talks until they prove themselves
  3. Give clear task instructions and correct mistakes privately without ridicule Correct answer.
  4. Discuss the trainee's mistakes loudly in front of customers

Explanation

Respectful communication means giving clear direction and correcting errors privately and constructively so learning continues without humiliation. Ridicule, exclusion, and public criticism create a hostile environment and discourage the reporting of hazards. Inclusion in briefings is also a safety requirement, not a privilege.

Question 19Workplace Communication and Occupational Health and Safety (OHS) Practices

A technician is asked to write a short incident report after a minor cut. Which detail is essential for the report to be useful?

  1. The task being performed, the tool involved, the time, and the control that failed Correct answer.
  2. A general statement that accidents happen
  3. The names of customers waiting in the lobby
  4. The technician's opinion of the supervisor's management style

Explanation

A useful incident report captures the activity, the equipment, the timing, and the failed control so that the cause can be analyzed and prevented. Personal opinions and unrelated details dilute the record. Vague statements provide no basis for corrective action.

Question 20Workplace Communication and Occupational Health and Safety (OHS) Practices

Which practice best reduces the risk of carbon monoxide exposure when running an engine inside the workshop?

  1. Run the engine briefly and rely on the smell of exhaust to judge safety
  2. Route the exhaust to the outside with an extraction hose and keep bay doors open for ventilation Correct answer.
  3. Close the doors to keep noise and fumes inside the bay
  4. Place a fan behind the vehicle to circulate air within the bay

Explanation

Carbon monoxide is odorless and potentially fatal, so the only reliable control is capturing exhaust at the source and venting it outdoors with adequate general ventilation. Smell is not a valid indicator, and closed doors trap the gas. A fan that recirculates air inside the bay merely moves the contaminant around.

Question 21Workplace Communication and Occupational Health and Safety (OHS) Practices

Before arc welding a chassis bracket, which combination of controls is most appropriate?

  1. Screen the arc, extract welding fume, wear a welding helmet and flame-resistant clothing, and remove flammables nearby Correct answer.
  2. Use a dust mask and ordinary cotton overalls as the only protection
  3. Wear sunglasses and weld quickly to limit exposure time
  4. Weld with the bay doors closed to keep sparks from customers

Explanation

Welding creates optical radiation, fume, sparks, and fire risk, so controls must address each route: screens protect bystanders, extraction removes fume, a proper helmet and flame-resistant clothing protect the welder, and housekeeping prevents ignition. Sunglasses and cotton overalls do not provide the required protection. Closing the bay worsens fume concentration.

Question 22Workplace Communication and Occupational Health and Safety (OHS) Practices

A technician must communicate a delay to a customer whose vehicle needs an unexpected part. Which message is most professional?

  1. Wait until the customer calls to ask about the vehicle
  2. Explain the finding, state the revised completion time, and confirm the customer agrees before continuing Correct answer.
  3. Say the car will be ready soon without giving a time
  4. Blame the parts supplier without offering a new schedule

Explanation

Professional communication gives the reason, a realistic revised time, and an opportunity for the customer to approve the change. Vague promises and blame-shifting erode trust and leave the customer without a plan. Silence forces the customer to chase information.

Question 23Workplace Communication and Occupational Health and Safety (OHS) Practices

Which record best demonstrates that a workshop meets its duty to train workers on OHS procedures?

  1. A verbal promise that everyone was told during a busy shift
  2. The supervisor's personal memory of past sessions
  3. A general poster displayed in the office
  4. Dated training records showing content, trainer, and attendee sign-off Correct answer.

Explanation

Documented training with dates, content, trainer identity, and signed attendance provides verifiable evidence that the duty was met. Verbal assurances, posters, and memory cannot demonstrate who was trained on what and when. Records also support refresher scheduling and audit.

Question 24Workplace Communication and Occupational Health and Safety (OHS) Practices

A compressed air line is used to dry parts. Which practice is acceptable under workshop OHS rules?

  1. Disconnect the regulator to get a stronger blast
  2. Direct the jet at a workmate as a practical joke
  3. Use the air at reduced pressure with eye protection and never direct it at skin or clothing Correct answer.
  4. Use full pressure to remove dust from overalls

Explanation

Compressed air can inject gas into tissue and propel particles, so it is used at controlled low pressure with eye protection and never aimed at people. Cleaning clothing with air drives contaminants into the skin and eyes. Removing the regulator creates an uncontrolled hazard.

Question 25Workplace Communication and Occupational Health and Safety (OHS) Practices

Which action correctly applies the principle of worker participation in OHS in an automotive shop?

  1. Have management write all procedures without consulting the bay staff
  2. Assign safety duties only to the newest worker
  3. Discuss hazards only during the annual audit
  4. Include technicians in identifying hazards and reviewing controls for their own tasks Correct answer.

Explanation

Workers who perform the task know its real hazards, so their participation improves hazard identification and the practicality of controls. Procedures written without their input often miss field conditions and are ignored. Concentrating safety duties on the newest worker or limiting discussion to audits leaves risks unmanaged daily.

Question 26Workplace Communication and Occupational Health and Safety (OHS) Practices

A trainee in the service bay does not understand an instruction given in a mix of English and the local language. Which response by the supervising technician best reflects clear workplace communication?

  1. Repeat the instruction more loudly using the same mixed wording.
  2. Write the instruction on a job order and assume the trainee will read it later.
  3. Ask the trainee to confirm the task back in their own words and clarify any step that is unclear. Correct answer.
  4. Assign the task to another worker so no further explanation is needed.

Explanation

Clear communication in a workshop requires confirming that the receiver actually understood the message, not just that it was sent. Asking the trainee to restate the task in their own words (a confirm-back or teach-back check) reveals gaps so they can be corrected before work starts. This protects both safety and work quality.

Question 27Workplace Communication and Occupational Health and Safety (OHS) Practices

Under Philippine OHS practice, which worker right allows a technician to refuse to operate a lift that has a visibly frayed cable without fear of retaliation?

  1. The right to refuse unsafe work Correct answer.
  2. The right to overtime pay
  3. The right to choose their shift schedule
  4. The right to a company uniform

Explanation

Philippine OHS law and practice recognize the worker's right to refuse work that poses an imminent danger, along with rights to know hazards and to participate in safety processes. A frayed lift cable is a clear imminent danger, so refusing to operate the lift is protected. The other choices concern employment benefits, not safety rights.

Question 28Workplace Communication and Occupational Health and Safety (OHS) Practices

A technician must report a near-miss in which a jack slipped but no one was hurt. Which reporting approach best supports the workshop's OHS management?

  1. Skip reporting because no injury or damage occurred.
  2. Record the near-miss promptly with the task, equipment, and conditions involved so the cause can be corrected. Correct answer.
  3. Report it only to coworkers verbally during break.
  4. Wait until the end of the month and mention it only if asked.

Explanation

Near-misses are leading indicators: they reveal hazards before harm occurs, so prompt written reporting with details of task, equipment, and conditions allows corrective action. Verbal or delayed reporting loses detail and does not feed the safety system. No-injury events still matter because the same cause can injure someone next time.

Question 29Workplace Communication and Occupational Health and Safety (OHS) Practices

A technician is about to spray brake cleaner in an enclosed bay while a coworker grinds nearby. Which combination of controls is most appropriate before starting?

  1. Check the safety data sheet for ventilation and ignition requirements, move the grinding work or isolate it, and ventilate the bay. Correct answer.
  2. Open the bay door slightly and rely on the general air conditioning.
  3. Proceed quickly so the spray finishes before the grinding creates much dust.
  4. Wear only a dust mask and continue both tasks in the same bay.

Explanation

The safety data sheet identifies the solvent's hazards, including flammability and inhalation risk, and grinding adds sparks and particulates. The correct approach is to review the SDS, separate incompatible hot work from solvent spraying, and provide adequate ventilation. A dust mask does not protect against solvent vapor or sparks.

Question 30Workplace Communication and Occupational Health and Safety (OHS) Practices

A workshop keeps receiving injuries to hands during brake servicing. Which analysis best identifies a systemic cause rather than blaming individual workers?

  1. Review injury records alongside the task steps, tools, gloves, and time pressure to find where the process allows exposure. Correct answer.
  2. Stop recording hand injuries so the statistics look better.
  3. Conclude that the injured technicians were careless and issue verbal warnings.
  4. Replace all technicians with new hires who have less experience.

Explanation

Systemic analysis looks at the work process, tools, protective equipment, and pressures that shape behavior, not individual blame. Reviewing records with task steps and available gloves or tools can reveal root causes such as ill-fitting gloves or unrealistic job times. Blaming workers or hiding data prevents the hazard from being corrected.

Question 31Use of Hand Tools, Measuring Instruments, and Workshop Equipment

A technician needs to loosen a stubborn 14 mm hex bolt on a brake caliper bracket. Which hand tool combination is the correct first choice to avoid rounding the fastener?

  1. A pair of locking pliers clamped across the flats
  2. A 14 mm six-point box-end wrench that fully surrounds the hex Correct answer.
  3. An adjustable wrench opened to the widest jaw setting
  4. A 12-point combination wrench used on the open end

Explanation

A six-point box-end wrench contacts all six flats of the fastener and spreads torque evenly, which is the recommended way to break loose a tight bolt without damaging the corners. Open ends and adjustable jaws contact only two flats and can slip under high torque.

Question 32Use of Hand Tools, Measuring Instruments, and Workshop Equipment

What is the standard purpose of a torque wrench when tightening cylinder head bolts?

  1. To measure the angle of rotation after the bolt seats
  2. To check the bolt thread pitch before assembly
  3. To verify that the bolt head is the correct size
  4. To apply a measured clamping force to the fastener Correct answer.

Explanation

A torque wrench is a measuring instrument that indicates when a preset or observed torque value is reached, so the fastener receives a known clamping force. It does not measure rotation angle, thread pitch, or socket size.

Question 33Use of Hand Tools, Measuring Instruments, and Workshop Equipment

A dial caliper reads 0.02 mm too high on every measurement, and the pointer rests off the zero mark when the jaws are closed. What is the correct action?

  1. Add 0.02 mm to every reading to compensate
  2. Use the depth rod instead of the jaws
  3. Record the zero error and subtract it from each reading Correct answer.
  4. Open the jaws fully and re-read the scale

Explanation

A caliper that does not zero when closed has a zero error, and the accepted practice is to note that error and correct each measurement by subtraction. Adjusting readings by guesswork or switching to another feature does not correct the instrument.

Question 34Use of Hand Tools, Measuring Instruments, and Workshop Equipment

Which measuring instrument is best suited for checking the outside diameter of a valve stem to 0.01 mm accuracy?

  1. A vernier caliper with 0.05 mm graduations
  2. A micrometer with a 0-25 mm range and 0.01 mm graduations Correct answer.
  3. A steel rule with 1 mm graduations
  4. A feeler gauge set

Explanation

A micrometer provides the fine resolution and rigid frame needed for accurate small-diameter measurement of a valve stem. A steel rule is far too coarse, and a 0.05 mm caliper cannot resolve the required 0.01 mm.

Question 35Use of Hand Tools, Measuring Instruments, and Workshop Equipment

When using a feeler gauge to check valve clearance, what indicates the correct clearance?

  1. The next larger blade also fits easily
  2. The blade bends when pushed
  3. The specified blade slides with a light drag Correct answer.
  4. The blade cannot be inserted at all

Explanation

The correct clearance is found when the blade of the specified thickness passes between the surfaces with a slight drag, showing contact without forcing. A blade that will not enter means the gap is too small, and one that passes freely with the next size up means it is too large.

Question 36Use of Hand Tools, Measuring Instruments, and Workshop Equipment

Why must a micrometer be checked against its zero before measuring a precision part?

  1. To verify the lock nut is loose
  2. To confirm the anvil and spindle faces meet at the true zero Correct answer.
  3. To remove oil from the ratchet stop
  4. To warm the frame to operating temperature

Explanation

Zeroing confirms that the measuring faces close squarely on each other and that the thimble reads zero, so any error is detected before use. Warming the frame, cleaning the ratchet, and loosening the lock are separate steps, not the reason for zero checking.

Question 37Use of Hand Tools, Measuring Instruments, and Workshop Equipment

A technician must remove a pressed-in wheel bearing race from a hub. Which workshop equipment is appropriate?

  1. A hydraulic press with correctly sized support plates Correct answer.
  2. A pedestal drill with a hole saw
  3. A bench grinder with a wire wheel
  4. An air blow gun

Explanation

A hydraulic press applies controlled, even force to push or pull a press-fit component without shock damage. Grinders, drills, and air guns do not provide the guided axial force needed for bearing removal.

Question 38Use of Hand Tools, Measuring Instruments, and Workshop Equipment

What is the primary safety reason for using a six-point socket rather than a twelve-point socket on a high-torque fastener?

  1. Greater contact area reduces the risk of slipping and injury Correct answer.
  2. Twelve-point sockets cannot fit a ratchet
  3. Twelve-point sockets are always the wrong size
  4. Six-point sockets are cheaper to replace

Explanation

A six-point socket grips more of each flat, so it is less likely to slip or round the fastener when high torque is applied, reducing the chance of knuckle injury. Cost and ratchet compatibility are not the safety rationale.

Question 39Use of Hand Tools, Measuring Instruments, and Workshop Equipment

A vernier caliper main scale shows 12 mm and the vernier scale line that aligns is the 0.35 mm mark. What is the reading?

  1. 12.035 mm
  2. 15.35 mm
  3. 12.35 mm Correct answer.
  4. 12.65 mm

Explanation

The reading is the main scale value plus the vernier coincidence value, so 12 mm plus 0.35 mm equals 12.35 mm. The vernier value is added, not appended as extra decimal places or subtracted.

Question 40Use of Hand Tools, Measuring Instruments, and Workshop Equipment

Which tool is designed specifically to check the inner diameter of a cylinder bore?

  1. A bore gauge set with a micrometer for calibration Correct answer.
  2. A dial indicator on a magnetic base
  3. A depth micrometer
  4. An outside micrometer alone

Explanation

A bore gauge is inserted into the cylinder and is set against a micrometer of known size to read the internal diameter and taper. An outside micrometer measures external dimensions, a depth micrometer measures depth, and a dial indicator on a base measures runout or deflection.

Question 41Use of Hand Tools, Measuring Instruments, and Workshop Equipment

How should a torque wrench be stored after use to preserve its accuracy?

  1. Stored with the drive engaged in a socket
  2. Set to its lowest scale value with the spring unloaded Correct answer.
  3. Hung by the handle from a hook
  4. Left at the last torque setting used

Explanation

Leaving a click-type torque wrench wound at a working setting keeps the internal spring compressed, which causes it to lose calibration over time. Backing it off to the lowest setting removes that load.

Question 42Use of Hand Tools, Measuring Instruments, and Workshop Equipment

A hacksaw is being used to cut a steel brake line. Which blade and technique are correct?

  1. A coarse wood blade with long fast strokes
  2. A coarse blade with heavy downward pressure
  3. A fine-tooth blade with light, steady strokes and the work clamped Correct answer.
  4. A fine blade with the work held by hand

Explanation

A fine-tooth blade suits thin steel and produces a cleaner cut, while light steady strokes and a clamped workpiece keep the cut straight and safe. Coarse blades and hand-held work invite slipping and injury.

Question 43Use of Hand Tools, Measuring Instruments, and Workshop Equipment

Which statement correctly describes the function of a bench vise in an automotive workshop?

  1. It presses bearings into a housing
  2. It measures the clamping force applied to a part
  3. It tests the hardness of metal parts
  4. It holds a workpiece securely so both hands are free to work Correct answer.

Explanation

A bench vise is a holding device that secures a workpiece rigidly, freeing the technician's hands for cutting, filing, or assembly. It is not a measuring, pressing, or hardness-testing instrument.

Question 44Use of Hand Tools, Measuring Instruments, and Workshop Equipment

A technician uses a dial indicator mounted on a magnetic base to check brake disc runout. Where should the indicator stem contact the disc?

  1. On the disc edge at a 45-degree angle
  2. On the caliper piston face
  3. Perpendicular to the friction surface near the outer edge Correct answer.
  4. Parallel to the disc face at the hub center

Explanation

Runout is measured with the indicator stem perpendicular to the rotating surface, positioned near the outer edge where any wobble is greatest. Angled or misplaced contact produces a cosine error or measures the wrong component.

Question 45Use of Hand Tools, Measuring Instruments, and Workshop Equipment

Which instrument is used to measure the thickness of a brake pad friction material without removing the caliper?

  1. A feeler gauge set
  2. A bore gauge
  3. A torque wrench
  4. A depth gauge or a dedicated brake pad thickness gauge Correct answer.

Explanation

A depth gauge or a purpose-made pad thickness gauge reaches into the caliper opening to measure remaining friction material. Feeler gauges measure gaps, bore gauges measure internal diameters, and torque wrenches measure tightening force.

Question 46Use of Hand Tools, Measuring Instruments, and Workshop Equipment

What does a compression gauge reading of low pressure on one cylinder, which rises after adding oil to that cylinder, most likely indicate?

  1. Worn piston rings or cylinder walls Correct answer.
  2. A burnt exhaust valve
  3. A restricted air filter
  4. A blown head gasket between cylinders

Explanation

Oil temporarily seals worn rings and cylinder walls, so compression rises when the problem is ring or bore wear. A valve or head gasket leak is not sealed by oil and would not improve the same way.

Question 47Use of Hand Tools, Measuring Instruments, and Workshop Equipment

Which practice correctly extends the service life of a hand file?

  1. Cleaning the teeth with a file card after use Correct answer.
  2. Using the file without a handle
  3. Striking the file on the bench to clear chips
  4. Storing files loose in a drawer with other tools

Explanation

A file card removes pinned chips that dull the teeth, and files should be stored so teeth do not rub against other tools. Striking the file and using it without a handle damage it and create safety hazards.

Question 48Use of Hand Tools, Measuring Instruments, and Workshop Equipment

A torque wrench has just been dropped on the floor. What is the correct follow-up before using it on an engine assembly?

  1. Have it recalibrated or verified against a known standard Correct answer.
  2. Increase the setting to compensate for the drop
  3. Use it as normal because click wrenches are shockproof
  4. Oil the internal mechanism and continue

Explanation

A drop can shift the calibration mechanism, so the wrench must be verified or recalibrated before trusted on critical fasteners. Assuming it is unaffected or compensating by guesswork risks under- or over-tightening.

Question 49Use of Hand Tools, Measuring Instruments, and Workshop Equipment

Which tool is correct for removing a snap ring that secures a CV joint on a drive shaft?

  1. Side cutters used to cut the ring
  2. A flat-blade screwdriver used to pry the ring
  3. Snap ring pliers with tips matched to the ring holes Correct answer.
  4. Long-nose pliers used on the ring ends

Explanation

Snap ring pliers have tips that engage the ring holes and compress or expand the ring evenly for safe removal. Improvised tools can slip, damage the ring, or injure the technician.

Question 50Use of Hand Tools, Measuring Instruments, and Workshop Equipment

When using a floor jack and axle stands to raise a vehicle for underbody work, what is the correct sequence?

  1. Jack at the specified lift point, then lower onto stands placed at the specified support points Correct answer.
  2. Place stands under the suspension arms, then jack at the differential
  3. Jack under the bumper, then leave the vehicle on the jack
  4. Place stands under the sill, then jack under the floor pan

Explanation

The jack must contact a designated lift point, and once raised the vehicle must rest on stands placed at the manufacturer's support points before anyone goes underneath. Jacking or supporting at random body or suspension locations can crush panels or let the vehicle fall.