Practice Test: Question Set - 08
1. A gear wheel has 36 teeth (Z) and 3 mm module (m). Its pitch diameter is:
- (A) 12 mm
- (B) 75 mm
- (C) 80 mm
- (D) 108 mm
2. Which among the following statements is NOT correct?
- (A) The
gear ratio between worm and worm wheel in a dividing head is 50 :1
- (B) Worm shaft
of the dividing head has single start worm
- (C) 20 turns of
index crank revolve the spindle through 180°
- (D) For
rapid indexing, the worm and worm wheel are to be disengaged
3. One turn of crank of indexing head rotates the spindle:
- (A) 9°
- (B) 18°
- (C) 40°
- (D) 45°
4. Stub arbor type 'A' is used for mounting:
- (A) Plain
milling cutter
- (B) Face milling
cutter
- (C) Side and
face milling cutter
- (D) Shell end
mill
5. Which among the following is NOT correct?
- (A) While using
helical milling cutter, only one tooth is loaded at a time
- (B) Helical
milling cutter does not produce chatter
- (C) Helical
plain milling cutter has an angle of 45° to over 60°
- (D) Plain
milling cutters are also called as slab milling cutters
6. A milling cutter should have three main properties. Which one of the following is correct?
- (A) Hardness,
toughness and resistance to wear
- (B) Hardness,
brittleness and resistance to wear
- (C) Hardness,
softness and resistance to wear
- (D) Hardness,
flexible and resistance to wear
7. Parallel shank end mill is mounted in the spring Collet. The inside diameter of Collet should be:
- (A) Less than
the diameter of parallel shank
- (B) More than
the diameter of parallel shank
- (C) Equal to the
diameter of parallel shank
- (D) Equal to the
size of the cutter
8. Which one of the following is an advantage of up cut milling?
- (A) Backlash
eliminator is not required
- (B) Downward
pressure during milling is high
- (C) Cutter wear
is less
- (D) Suitable for
milling thin plates
9. The round portion of the chip space on milling cutter is called as :
- (A) Round edge
- (B) Corner slot
- (C) Fillet
- (D) Radius
10. Which one of the following is used for holding end mill?
- (A) Collet chuck
- (B) Draw-in-bar
- (C) Boring head
- (D) Stub arbor
11. In one complete revolution of worm shaft, the worm wheel revolves:
- (A) 1/10th of
revolution
- (B) 1/20th of
revolution
- (C) 1/25th of
revolution
- (D) 1/40th of
revolution
12. In a spur gear, if module = 4 mm, the tooth height will be:
- (A) 4.67 mm
- (B) 5.67 mm
- (C) 6.67 mm
- (D) 8.67 mm
13. While milling through slot in a mild steel plate with a Dia 12 mm end mill cutter on vertical milling machine, the cutter slips and breaks. What is to be done?
- (A) Reset the
spindle to a higher speed
- (B) Reduce the
cutting speed
- (C) Increase the
depth of cut
- (D) Reduce the
depth of cut and feed
14. Which milling machine is particularly adapted for milling internal or external profiles?
- (A) Pantograph
milling machine
- (B) Universal
milling machine
- (C) Planetary
milling machine
- (D) Tracer
controlled milling machine
15. What will be the setting while grinding a tooth of a cylindrical cutter set on a mandrel?
- (A) The
cylindrical cutter set on a mandrel will be in between centers
- (B) The
cylindrical cutter set on a mandrel will be in between chuck and centre
- (C) The
cylindrical cutter set on a mandrel will be only in chuck
- (D) The
cylindrical cutter set on a mandrel will be within chuck and steady rest
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