Maharashtra SSC Multi-Skill Assistant Technician Pre-Voc/NSQF key terms

A turning or twisting effect produced when a force acts at some distance from an axis. It is calculated as force multiplied by perpendicular distance and measured in newton metres.

A rule stating that in a circuit at constant temperature, current is directly proportional to voltage and inversely proportional to resistance, written as V = I × R.

The ratio of useful real power, measured in watts, to apparent power, measured in volt-amperes, in an alternating-current circuit. A low value means more current is drawn for the same useful output.

Connecting exposed metal parts of equipment to the ground so that fault current flows safely away and protective devices trip quickly, reducing the risk of electric shock to people.

The relationship between the number of teeth on two meshing gears, showing how many turns the driving gear makes for one turn of the driven gear. It affects speed and torque.

A machine part that supports a rotating shaft, keeps it in position, and allows smooth movement while reducing friction and wear between moving surfaces.

A measuring tool with a main scale and a sliding vernier scale used to measure outside, inside and depth dimensions. A common workshop type has a least count of 0.02 mm.

A precision measuring instrument that uses a calibrated screw to measure small thicknesses and diameters, usually reading to 0.01 mm, with a frame, spindle, thimble and ratchet.

The smallest measurement value that a measuring instrument can read or show reliably. It is calculated from the scale divisions and decides how precise the reported measurement can be.

The allowed difference between the maximum and minimum permitted size of a manufactured part. It tells the worker how much variation from the nominal dimension is acceptable.

A drawing method that shows a three-dimensional object as separate front, top and side views on flat paper, with each view placed according to a fixed projection rule.

A pictorial drawing where the three main axes are drawn 120 degrees apart and vertical edges stay vertical, giving a three-dimensional impression without vanishing points.

A projection system in which the object is imagined between the observer and the plane, so the top view is drawn below the front view and the left view on the right.

A drawing view that shows the inside of an object by imagining it cut with a cutting plane. The cut surfaces are hatched with thin lines to show solid material.

A thin continuous line with arrowheads at both ends that shows the extent and direction of a measurement on a drawing, usually carrying the size value.

A list on or with a drawing giving the part numbers, descriptions, quantities and sometimes materials of all items needed to assemble the product.

A wrench that clicks or signals when a set twisting force is reached, used to tighten nuts and bolts to a specified tightness without over-tightening or damaging threads.

Applying oil, grease or another substance between moving surfaces to reduce friction and wear, carry away heat and help keep the equipment running smoothly.

Planned, regular servicing and inspection carried out before a fault develops, such as cleaning, tightening, lubricating and replacing worn parts, to prevent breakdowns and extend equipment life.

Personal protective equipment, meaning items worn by a worker such as helmet, goggles, gloves, safety shoes and ear plugs to reduce exposure to workplace hazards.

A safety procedure in which energy sources are switched off, isolated, locked and tagged so machinery cannot be started while servicing or repair work is being done.

A portable device that discharges water, foam, dry powder or carbon dioxide to put out small fires. The correct type must match the class of fire.

A workplace housekeeping method with five steps: sort, set in order, shine, standardise and sustain. It keeps tools and materials organised, reduces searching time and improves safety.

A safety data sheet that gives information about a chemical product, including hazards, safe handling, storage, first aid and emergency measures. Workers should read it before using the chemical.

Cardiopulmonary resuscitation, a first-aid technique of chest compressions, sometimes with rescue breaths, used when a person has stopped breathing or the heart has stopped.

The activity of identifying an opportunity, arranging resources and taking financial risk to start and run a business, with the aim of earning profit and creating value.

A business document sent by a seller to a buyer listing goods or services supplied, quantities, rates, taxes and the total amount payable, with payment terms.

Goods and Services Tax, an indirect tax levied on the supply of goods and services in India, collected at the point of sale and remitted to the government.

System software that manages a computer's hardware and provides services for programs, such as Windows, Linux or Android, handling files, memory, devices and user access.

A cyber fraud in which fake emails, messages or websites trick a person into revealing passwords, bank details or other private information by pretending to be a trusted source.

A service that keeps files on remote internet servers so they can be accessed from different devices with a login. Examples include Google Drive and OneDrive.

A software application that organises data in rows and columns of cells and can calculate totals and charts using formulas; used for records, estimates and reports.

Giving full attention to a speaker, showing interest through body language, asking clarifying questions and repeating key points to confirm understanding before replying.

Information given to a person about how their work or behaviour was received, ideally specific and timely, so they can maintain strengths and improve weak areas.

A short written summary of a person's education, skills, experience and achievements, prepared for job applications and usually one or two pages long.