Practice Test: Question Set - 04
1. What is the type of welding defect is caused due to stresses on heating and cooling called?
- (A) Incomplete
penetration
- (B) Shrinkage
void
- (C) Slag
Entrapment (Inclusions)
- (D) Incomplete
fusion
2. What is the type of welding defect caused due to poor deposition of weld rod is called?
- (A) Porosity
- (B) Undercut
- (C) Under fill
- (D) Crack
3. What is the type of welding defect caused due to poor manipulation of weld rod or a dirty joint called?
- (A) Porosity
- (B) Undercut
- (C) Under fill
- (D) Crack
4. What is the type of joining process called, where the parts to be welded are kept in contact and rotated relative to each other and axial pressure is applied when the desired temperature is obtained?
- (A) Ultrasonic welding
- (B) Forge
welding
- (C) Electron
beam welding
- (D) Friction
welding
5. If the flame of the welding torch is directed towards the progress of welding, then what will you call the welding technique?
- (A) Forehand
welding
- (B) Flux cored
ARC welding
- (C) Electro slag
welding
- (D) Pulsed spray
welding
6. Which of the following is the correct data structure for solid models?
- (A) Solid part -
faces - edges - vertices
- (B) Solid part -
edges - faces - vertices
- (C) Vertices -
edges - faces - solid parts
- (D) Vertices -
faces- edges - solid parts
7. For generating a Coon’s surface we require
- (A) A set of
grid points on the surface
- (B) A set of
grid control points
- (C) Four
bounding curves defining the surface
- (D) Two bounding
curves and a set of grid control points
8. Internal gear cutting operation can be performed by
- (A) Milling
- (B) Shaping with
rack cutter
- (C) Shaping
with pinion cutter
- (D) Hobbing
9. If a particular Fe-C alloy contains less than 0.83% carbon, it is called
- (A) High
speed steel
- (B) Hypo
eutectoid steel
- (C) Hyper
eutectoid steel
- (D) Cast iron
10. In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting velocity is 90 m/min. The feed is 0.24 mm/rev and the depth of cut is 2 mm. The chip thickness obtained is 0.48 mm. If the orthogonal rake angle is zero and the principle cutting edge angle is 90⁰, the shear angle in degree is
- (A) 20.56
- (B) 26.56
- (C) 30.56
- (D) 36.56
11. As tool and work are not in contact in EDM process
- (A) No relative
motion occurs between them
- (B) No wear of
tool occurs
- (C) No
power is consumed during metal cutting
- (D) No
force between tool and work occurs
12. Hardness of steel greatly improves with
- (A) Annealing
- (B) Cyaniding
- (C) Normalizing
- (D) Tempering
13. A lead-screw with half nuts in a lathe, free to rotate in both directions has
- (A) V-threads
- (B) Whitworth
threads
- (C) Buttress
threads
- (D) Acme threads
14. Hot rolling of mild steel is carried out
- (A) At recrystallization
temperature
- (B) Between
100⁰C to 150⁰C
- (C) Between recrystallization
temperature
- (D) Above
recrystallization temperature
15. Trepanning is performed for
- (A) Finishing a drilled hole
- (B) Producing a large hole without drilling
- (C) Truing a hole for alignment
- (D) Enlarging a drilled hole
Next Tests: