1) The necessity of tack welding in a joint is to ......
join two pieces of plates
join two pieces of pipes
eliminate spatters
control distortion during welding
Correct answer
control distortion during welding
2) Identify double ‘U’ butt joints edge preparations in the figure.
3) During arc welding the correct angle of the electrode with the welding line is ........................
35°
40° to 50°
70° to 80°
90°
Correct answer
70° to 80°
4) Identify the characteristic of flame shown in the figure.
Acetylene is more than oxygen
Acetylene and oxygen are in equal proportion
Oxygen is more than acetylene
Acetylene and oxygen are in less proportion
Correct answer
Acetylene is more than oxygen
5) The hosepipe for the oxygen line is ...............
red
black
brown
maroon
Correct answer
black
6) Name the welding machine.
Inverter
Rectifier
D.C. generator
A.C. transformer
Correct answer
A.C. transformer
7) To prevent the danger of harmful rays from the electric arc, use ..................
a welding shield
a leather apron
a goggle with plain glass
a leather gloves
Correct answer
a welding shield
8) Identify the welding hammer shown in the figure.
Crosscut hammer
Chipping hammer
Straight pein hammer
Sledgehammer
Correct answer
Chipping hammer
9) Which one of the following is the cause for porosity in arc welding?
Long arc length
Use of wet electrode
High current setting
Low welding speed
Correct answer
Use of wet electrode
10) Which type of gas flame is the most suitable for brazing?
Oxy—LP gas flame
Oxy-coal gas flame
Oxyhydrogen gas flame
Oxyacetylene gas flame
Correct answer
Oxyacetylene gas flame
11) A grinding wheel with standard wheel marking is shown below. Name the code ‘A’ marked in the given figure.
Type of abrasive
Grade
Structure
Grain size
Correct answer
Type of abrasive
12) Which bonding material is suitable for grinding fine edged tools?
Rubber bond
Silicate bond
Vitrified bond
Shellac bond
Correct answer
Silicate bond
13) Identify the grinding wheel test shown in the figure.
Abrasive test
Bond test
Hardness test
Cracks on wheel
Correct answer
Cracks on wheel
14) Hand taps are made from ..................
stainless steel
high carbon steel
low carbon steel
mild steel
Correct answer
high carbon steel
15) The straight shank drill is held in the main spindle of drilling machine by .........................
collet
chuck
floating holder
sleeve
Correct answer
chuck
16) The distance a drill advanced into the work for each revolution is called the .............
cutting speed of a drill
the depth of a drill
feed of a drill
the speed of a drill
Correct answer
feed of a drill
17) What coolant is used for drilling the aluminum job?
Soluble oil
Mineral oil
Kerosene
Dry air
Correct answer
Kerosene
18) After threading a hole by a tap, it was found that the crest of the thread was not formed completely, this defect is due to ..............
hole size slightly more than the tap drill size
hole size slightly less than the tap drill size
insufficient coolant supply
broken tip of cutting edge of the tap
Correct answer
hole size slightly more than the tap drill size
19) The part of the reamer which allows the chips to pass and admit the coolant to the cutting edge is called ......
tang
flute
land
neck
Correct answer
flute
20) The property of metals by virtue of which they can be rolled into thin sheets without breaking is called ..........
malleability
toughness
tenacity
ductility
Correct answer
malleability
21) Name the part marked ‘X’ in fig.
Spindle
Thimble
Anvil
Ratchet stop
Correct answer
Ratchet stop
22) Feeler gauges are used to check the ......
precision length measurement
particular standard thread pitch
the gap between the mating parts
radii of the given component
Correct answer
the gap between the mating parts
23) Identify the part marked ‘X in the figure.
Beam
Vernier slide
Scriber
Vernier plate
Correct answer
Scriber
24) The most commonly used size of the vernier height gauge is stated by the height of the beam is ...............
300 mm
325 mm
350 mm
275 mm
Correct answer
300 mm
25) Write the reading of the O-25 mm micrometer setting shown in the figure.
7.31
7.32
7.34
7.33
Correct answer
7.31
No comments:
Post a Comment