1) Which one of the following is used to hold cylindrical rough casting for turning?
Three-jaw chuck
Four-jaw chuck
Collet chuck
Magnetic Chuck
2) Which one of the following centers are suitable while cutting taper by a set over method?
Plain center
Half-center
Ball center
Revolving center
3) Which one of the following is used to hold the workpiece for machining diameter concentric to its hole/bore?
Faceplate
Mandrel
Three-jaw chuck
Four-jaw chuck
4) Which among the following centers is suitable when workpiece held between centers is to be turned at high speed?
Ball center
Half center
Pipe center
Revolving center
5) The included angle of the live center nose is
30°
45°
60°
90°
6) A lathe half-center is used
To support the workpiece always
To turn the long workpiece
Because it is easy to lubricate the workpiece
To face the workpiece up to the end of the center hole
7) Dead center, as compared with the live center, bears or resists
No friction
Equal friction
Less friction
More friction
8) The size of the three-jaw chuck is specified by
The size of each jaw
The thickness of each jaw
The diameter of the body of the chuck
The width of the body of the chuck
9) A follower steady consists of
One pad
Two pads
Three pads
Four pads
10) A follower steady is fixed on the
Tailstock
Bed
Saddle
Headstock
11) The taper provided in the nose of the tailstock barrel is
Morse taper
Jarno taper
Brown and Sharpe taper
Metric taper
12) An irregularly shaped workpiece is turned on a lathe. Which one of the following work-holding accessories is used?
Three-jaw chuck
Two-jaw chuck
Driving plate
Faceplate
13) Which taper is used on spindle nose of the lathe headstock?
Jarno taper
Brown and Shame taper
Pin taper
Morse taper
14) What is the advantage of tailstock spindle having left-handed threads?
Avoid advancement of the barrel when rotated clockwise
Ensure that the barrel advances with the clockwise movement of the hand wheel
Reduce the tendency for excessive movement of the barrel
Avoid jamming of spindle and the hand wheel
15) Which among the following is NOT the feature of tailstock?
It holds the job
Drills and reamers can be mounted on it
Dead center is mounted on its spindle
It can be used for taper turning by the offset method
16) Which one of the following tool posts is easy for setting the tool center height of the tool in a lathe?
Open side tool post
Single screw tool post
Four-way tool post
Universal tool post
17) An angular workpiece is to be faced. It should be mounted
In a three-jaw chuck
In a collet
Between centers
On a faceplate
18) Scroll and gear mechanism is employed in
Three-jaw chuck
Four-jaw chuck
Magnetic Chuck
Collet chuck
19) Which among the following materials is used for steady rest pads?
Mild steel
Lead
Brass
Aluminum
20) Which among the following statements in respect of fixed steady is NOT correct?
when setting its two lower pads are made to just touch the surface of the job first
It must be trued before the pads to bear on the job
Skinning is done on the job before it is set with the job
It is fixed to the carriage of the lathe
21) A fixed steady has
One adjustable pad
Two adjustable pads
Three adjustable pads
Four adjustable pads
22) During machining operation using faceplate, the angle plate is held on the
Faceplate
Carriage
Tailstock
Bed
23) A faceplate is used for turning
Regular shaped jobs
Irregular shaped jobs
Flat jobs
None of the above
24) Which among the following statements is NOT correct?
A faceplate is similar to the magnetic chuck
For the accurate setting of the job on the faceplate, the dial test indicator is used
To check the balance of the faceplate work, spindle drive should be disconnected
‘V’ block is essential for holding the round job on the faceplate
25) ‘V’ groves of cast iron pulley have to be fine-tuned. Which one of the following work holding methods gives the highest concentricity?
Holding between a four-jaw chuck and a revolving center
Holding between a three-jaw chuck and supporting with a pipe center
Holding on a split mandrel and machining between centres
Holding on cone mandrel and machining between centers.
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