Practice Test: Question Set - 08
1. The snag grinding is done
- (A) To
produce good surface finish and high degree of accuracy
- (B) To
remove considerable amount of metal without regard to accuracy of the finished
surface
- (C) To
grind exterior cylindrical surfaces
- (D) Any
one of the above
2. In ultrasonic machining, tool is made of
- (A) Tungsten
carbide
- (B) Brass
or copper
- (C) Diamond
- (D) Stainless
steel
3. Stellite preserves hardness up to a temperature of
- (A) 350°C
- (B) 500°C
- (C) 900°C
- (D) 1100°C
4. Low helix angle drills are preferred for drilling holes in
- (A) Plastics
- (B) Copper
- (C) Cast steel
- (D) Carbon
steel
5. The angle between the shear plane and _________ is called shear angle.
- (A) Work
surface
- (B) Tool
face
- (C) Machine
surface
- (D) None
of these
6. In hot machining, the work is heated by
- (A) Simple
heating
- (B) Flame
heating
- (C) Induction
heating
- (D) Any
one of these
7. While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is
- (A) Independent
of index change gear ratio
- (B) Dependent
on speed change gear ratio
- (C) Interrelated
to index change gear ratio
- (D) Independent
of speed and index change gear ratio
8. The rake angle required to machine brass by high speed steel tool is
- (A) 0°
- (B) 10°
- (C) 20°
- (D) 100°
9. For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
- (A) 5 m/min
- (B) 10 m/min
- (C) 15 m/min
- (D) 30 m/min
10. The factor considered for evaluation of machinability is
- (A) Cutting
forces and power consumption
- (B) Tool life
- (C) Type
of chips and shear angle
- (D) All of these
11. Lathe bed is made of
- (A) Mild
steel
- (B) Alloy steel
- (C) Pig
iron
- (D) Chilled
cast iron
12. The drill spindles are provided with standard taper known as
- (A) Morse taper
- (B) Seller's
taper
- (C) Chapman
taper
- (D) Brown
and Sharpe taper
13. The cutting force in up milling ________ per tooth movement of the cutter.
- (A) Is zero
- (B) Is maximum
- (C) Decreases
from maximum to zero
- (D) Increases
from zero to maximum
14. A left hand tool on a lathe cuts most efficiently when it travels
- (A) From left to
right end of the lathe bed
- (B) From
right to left end of the lathe bed
- (C) With
the help of a compound slide
- (D) Across
the bed
15. Side rake angle of a single point cutting tool is the angle
- (A) By
which the face of the tool is inclined towards back
- (B) By
which the face of the tool is inclined sideways
- (C) Between the
surface of the flank immediately below the point and a plane at right angles to
the centre line of the point of the tool
- (D) Between the
surface of the flank immediately below the point and a line drawn from the
point perpendicular to the base
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