1) The surface of a grinding wheel develops a smooth and shining appearance is called -
Glazing
Dressing
Loading
Truing
Correct answer
Glazing
2) Drill chucks are fitted on the drilling machine spindle by means of a -
Arbor
Drift
Knurled ring
Pinion and key
Correct answer
Arbor
3) The Morse taper provided on drills ranges between-
MT0 to MT5
MT1 to MT4
MT1 to MT5
MT0 to MT4
Correct answer
MT1 to MT5
4) Files are made of .............
High carbon steel
Aluminum
Mild Steel
Forged wrought iron
Correct answer
High carbon steel
5) Spot welding is a type of .......... welding
Resistance
Electric Arc
Gas
None of these
Correct answer
Resistance
6) You locate a point and mark it with the ..........
Prick Punch
Chisel
Hammer
Snips
Correct answer
Prick Punch
7) Fig 'B' is of .............
Combination Snips
Bulldog Snips
Prick Punch
Compound Lever Shears
Correct answer
Combination Snips
8) CRIMPING is to reduce the ............ of a cylindrical shape, allowing it to be slipped into the next section.
Diameter
Width
Length
Mass
Correct answer
Diameter
9) When Prussian blue mixed with ......, it forms a quick-drying stain which is known as marking blue or layout dye.
Methylated spirits
Grease
Oil
Plastics
Correct answer
Methylated spirits
10) In oxy-acetylene welding, the flame temperature is -
1600-1700°C
2000-2100°C
2500-2600°C
3200-3300°C
Correct answer
3200-3300°C
11) In oxy-acetylene welding, the color of the oxygen cylinder is -
Maroon
Red
Brown
Black
Correct answer
Black
12) It determines the class of fit of the tap -
L Limit
G Limit
H-Limit
F-Limit
Correct answer
H-Limit
13) Acetylene can be prepared by the chemical reaction between -
Water and Calcium carbonate
Water and Calcium carbide
Hydrogen and Calcium carbonate
Hydrogen and Calcium carbide
Correct answer
Water and Calcium carbide
14) Which flame is suitable for cutting operations?
Oxidizing flame
Carburizing flame
Neutral flame
None of these
Correct answer
Neutral flame
15) Which flame is suitable for welding of nonferrous metals (brasses and bronzes)?
Oxidizing flame
Carburizing flame
Neutral flame
None of these
Correct answer
Oxidizing flame
16) Which flame is suitable for welding steel?
Oxidizing flame
Carburizing flame
Neutral flame
None of these
Correct answer
Neutral flame
17) Grinding wheels of finer grit have a ………… rate of wear than grinding wheels having a coarse grit.
Higher
Lower
Same
None of these
Correct answer
Lower
18) Which of the following letter represents a grinding wheel of medium grade?
N
D
Z
Q
Correct answer
N
19) The surface grinding machine is capable to grind .................
Flat surfaces
Irregular surfaces
Curved surfaces
All of these
Correct answer
Flat surfaces
20) The letter S denotes which of the following type of wheel?
Silicate bonded
Resinoid bonded
Shellac bonded
Rubber bonded
Correct answer
Silicate bonded
21) In marking of grinding wheels ............ compulsory symbols are used.
6
8
5
7
Correct answer
7
22) The following is machined dry -
Aluminum
Cast iron
Titanium
All of these
Correct answer
Cast iron
23) In a bilateral system of tolerance, the tolerance is allowed on -
Both sides of the actual size
One side of the nominal size
Both sides of the nominal size
One side of the actual size
Correct answer
Both sides of the nominal size
24) The cutting speed of a drill depends upon the ......
Material of drill
Type of material to be drilled
Quality of surface finish desired
All of these
Correct answer
All of these
25) While over tighten the Bench vice, which part will get damaged?
Spindle
Fixed Jaw
Square nut
Handle
Correct answer
Square nut
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