Practice Test: Question Set - 05
1. Fine facing is done by feeding the tool
- (A) From centre
to the periphery of the job
- (B) From
periphery to the centre of the job
- (C) Either 'A'
or 'B'
- (D) Neither 'A'
nor 'B'
2. The difference in measurement between the machined and un-machined diameter is equal to the
- (A) Depth of cut
- (B) 1/2 depth of
cut
- (C) 2 ×
depth of cut
- (D) None of the
above
3. An angular workpiece is to be faced. It should be mounted
- (A) In a
three-jaw chuck
- (B) In a Collet
- (C) Between
centers
- (D) On a face
plate
4. The taper of a job is given 1:10, the length of taper is 150 mm and the total length is 200 mm. The tailstock offset should be
- (A) 15 mm
- (B) 10 mm
- (C) 7.5 mm
- (D) 5 mm
5. For setting of tool for threading, it is aligned with the work by using
- (A) Try square
- (B) Centre gauge
- (C) Thread plug
gauge
- (D) Template
6. If the pitch to be cut is 2.5 mm and the lathe has 5 mm pitch lead screw, the thread chasing dial has 8 divisions and a 16 teeth worm wheel fitted on it, the engagement of half nut should be
- (A) Only at one
particular position
- (B) Only at
numbered or un-numbered division
- (C) At opposite
position
- (D) Anywhere
7. Which among the following statements is correct?
- (A) During
turning, after giving one depth of cut, the diameter is reduced equal to double
the depth
- (B) Carbide
tipped tool can withstand shock load
- (C) When turning
bigger diameter job, the rpm is proportionally increased
- (D) When turning
smaller diameter job, the rpm is proportionally decreased
8. Which one of the following is true with respect to the principle of taper turning attachment?
- (A) Work axis is
parallel to lathe axis and tool is made to move parallel to the work axis
- (B) Work axis is
parallel to lathe axis and the tool is made to move at an angle to the work
axis
- (C) Work axis is
out of alignment with the lathe axis and the tool is made to move at an angle
to the work axis
- (D) Work axis is
out of alignment with the lathe axis and the tool is made to move at an angle
parallel to the lathe axis
9. Which one of the following operations is NOT done on a workpiece held in-between centers?
- (A) Knurling
- (B) Undercutting
by plunging
- (C) Thread
cutting
- (D) Parting off
10. Unusual sound is heard during rough boring a large diameter hole. Which one of the following statements is the cause for this defect?
- (A) Boring tool
springs its travel
- (B) Coolant is
not applied with force
- (C) Tool set
below centre
- (D) No secondary
clearance ground on the front cutting edge
11. Chip breakers are meant to break continuous long chips. Which one of the following types of chip breaker is found on a throw away insert with holder?
- (A) Piece of
sheet metal clamped to the holder in the path of the coil
- (B) A step is
ground on the throw away insert along the cutting edge
- (C) A small
groove ground at the cutting edge
- (D) A carbide
bit is screwed and held on the top face of the bit
12. When cutting ISO metric threads of coarse pitch, the compound rest should be swiveled to
- (A) 15°
- (B) 30°
- (C) 45°
- (D) 60°
13. A carbide tipped tool with blue marking is used on a lathe. Which one of the following materials can be machined with this tool?
- (A) Brass
- (B) Steel
- (C) Plastic
- (D) Grey cast
iron
14. Which one of the following is a remedial measure to prevent the tool cutting edge chipping off?
- (A) Increase
feed rate
- (B) Reduce
cutting speed
- (C) Decrease
nose radios
- (D) Use negative
top rake
15. Hand chasers are used for
- (A) Quick
production of threads
- (B) Cutting
threads on soft metal directly
- (C) Rectifying
threads cut on steel rods which are distorted
- (D) Rectifying
crest and root of threads formed by single point tool
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