1) Vernier height gauge works on the principle similar to .................
Vernier micrometer
Vernier caliper
Vernier bevel protractor
None of the above
Correct answer
Vernier caliper
2) Which of the following thread is used for transmitting motion?
Round thread
Trapezoidal thread
BSW thread
ISO Metric thread
Correct answer
Trapezoidal thread
3) The coating of electrodes for welding mild and low alloy steels ............... is used to provide a gaseous shield with the reducing agent.
Ferromanganese and Ferro silicon
Titanium Oxide
Metal Carbonates
Cellulose
Correct answer
Cellulose
4) The shaping of grinding wheel to make it run concentric with the axis is called:
Truing
Dressing
Glazing
Balancing
Correct answer
Balancing
5) Bronze is an alloy of copper and ...............
Zinc
Lead
Tin
Silver
Correct answer
Tin
6) The difference between the maximum limit of size and minimum limit of size is equal to ..................
Lower deviation
Upper deviation
Tolerance
Actual size
Correct answer
Tolerance
7) Name the Instrument to measure the diameter of the round rod.
Depth Micrometer
Inside micrometer
Outside micrometer
Tube micrometer
Correct answer
Outside micrometer
8) Which one of the following elements cannot be checked with the screw pitch gauge?
Lead
Depth
Pitch
Profile
Correct answer
Depth
9) The operation for making a seat for bolt head, washer or nut is called ..............
Spot facing
Counterboring
Countersinking
Grooving
Correct answer
Spot facing
10) The Number of divisions on the Vernier scale of a Vernier micrometer (metric) is:
5
10
50
100
Correct answer
10
11) The surface of a grinding wheel develops a smooth and shining appearance is called ..........................
Truing
Loading
Dressing
Glazing
Correct answer
Glazing
12) Files are made of ...............
Forged wrought iron
High carbon steel
Mild Steel
Aluminum
Correct answer
High carbon steel
13) What is the functional part of a pilot provided in reamers?
Removing chips
Hold in a tap wrench
Finish Concentric Hole
Hold in the machine spindle,
Correct answer
Finish Concentric Hole
14) Puddling furnace is used to produce ............
Wrought Iron
Steel
Pig Iron
Cast Iron
Correct answer
Wrought Iron
15) In Oxy-acetylene welding, the color of the oxygen cylinder is ....................
Brown
Black
Maroon
Red
Correct answer
Black
16) Which flame is suitable for cutting operations?
Oxidizing flame
Carburizing flame
Neutral Flame
None of these
Correct answer
Oxidizing flame
17) Which flame is suitable for welding of non-ferrous metals (brasses and bronzes)?
Oxidizing flame
Carburizing flame
Neutral flame
None of these
Correct answer
Oxidizing flame
18) A left-hand screw advances in ...........
Counterboring
Anticlockwise
Any direction
None of these
Correct answer
Anticlockwise
19) Acme thread is a modified form of ...........
Worm thread
Square thread
Sawtooth thread
Vee thread
Correct answer
Square thread
20) Mechanical seals are used to ............
Prevent vibration
Prevent leakage
Reduce friction
Balance the equipment
Correct answer
Prevent vibration
21) Interchangeability of parts is best suited for ...........................
Batch production
Mass production
Job production
None of the above
Correct answer
Mass production
22) Hook Scrapers are used for scraping .................
Curved surface
Hollow Surface
Centre portion of a flat surface
Bend surface
Correct answer
Centre portion of a flat surface
23) In marking of grinding wheels.......... compulsory symbols are used?
7
8
6
5
Correct answer
6
24) While over-tightening the bench vice, which part will get damaged?
Handle
Spindle
Box nut
Fixed Jaw
Correct answer
Box nut
25) Zero line represents:
Upper deviation
Lower deviation
Zero deviations
None of the above
Correct answer
Zero deviations
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