LATHE MACHINE MCQ 2
LATHE MACHINE MCQ 2
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
Correct Answer (C)
2) Which one of the following centres is suitable while cutting taper by set over method?
Plain centre
Half centre
Ball centre
Revolving centre
Correct Answer (B)
3) Which one of the following is used to hold the workpiece for machining diameter concentric to its hole / bore?
Face plate
Mandrel
Three-jaw chuck
Four-jaw chuck
Correct Answer (D)
4) Which among the following centres is suitable when workpiece held between centres is to be turnned at high speed?
Ball centre
Half centre
Pipe centre
Revolving centre
Correct Answer (D)
5) The included angle of live centre nose is
30°
45°
60°
90°
Correct Answer (C)
6) A lathe half centre is used
To support the workpiece always
To turn long workpiece
Because it is easy to lubricate the workpiece
To face the workpiece upto the end of the centre hole
Correct Answer (D)
7) Dead centre, as compared with the live centre, bears or resists
No friction
Equal friction
Less friction
More friction
Correct Answer (D)
8) The size of three-jaw chuck is specified by
The size of each jaw
The thickness of each jaw
The diameter of the body of the chuck
Width of the body of the chuck
Correct Answer (C)
9) A follower steady consists of
One pad
Two pads
Three pads
Four pads
Correct Answer (B)
10) A follower steady is fixed on the
Tailstock
Bed
Saddle
Headstock
Correct Answer (C)
11) The taper provided in the nose of the tailstock barrel is
Morse taper
Jarno taper
Brown and Sharpe taper
Metric taper
Correct Answer (A)
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
Correct Answer (D)
13) Which taper is used on spindle nose of the lathe headstock?
Jarno taper
Brown and Shame taper
Pin taper
Morse taper
Correct Answer (D)
14) What is the advantage of tailstock spindle having left-handed threads?
Avoid advancement of barrel when rotated clockwise
Ensure that the barrel advances with clockwise movement of hand wheel
Reduce the tendency for excessive movement of the barrel
Avoid jamming of spindle and hand wheel
Correct Answer (B)
15) Which among the following is NOT the feature of tailstock?
It holds the job
Drills and reamers can be mounted on it
Dead centre is mounted on its spindle
It can be used for taper turning by offset method
Correct Answer (A)
16) Which one of the following tool posts is easy for setting the tool centre height of the tool in a lathe?
Open side tool post
Single screw tool post
Four-way tool post
Universal tool post
Correct Answer (D)
17) An angular workpiece is to be faced. It should be mounted
In a three-jaw chuck
In a collet
Between centres
On a face plate
Correct Answer (D)
18) Scroll and gear mechanism is employed in
Three-jaw chuck
Four-jaw chuck
Magnetic chuck
Collet chuck
Correct Answer (A)
19) Which among the following materials is used for steady rest pads?
Mild steel
Lead
Brass
Aluminium
Correct Answer (C)
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
