VSSC Machinist Paper 2019

Vikram Sarabhai Space Centre  Machinist Paper 2019

The job reciprocates in
(a) Shaping machine
(b) Planing machine
(c) Slotting machine
(d) All of the above

Quick return mechanism in a planing machine is necessary to
(a) Have smooth surface
(b) Avoid dulling of the tool point
(c) Reduce operation time
(d) Increase operation time

Machinist Model Question Paper
Knurling is the operation done on
(a) Lathe
(b) Milling
(c) Crinding
(d) Shaping

Bevelling the edge of the cylinderical job is called
(a) Taper turning
(b) Counter sinking
(c) Spot facing
(d) Chamfering

Machinist Sample Paper
The size of an engineer’s vice is specified according to the
(a) Length of the movable jaw
(b) Width of jaws
(c) Height of the vice
(d) Maximum of the openings of the jaw

Which one of the following is not an advantage of grinding process?
(a) Heat treated components can be ground
(b) Produces extremely smooth surfaces
(c) Heavy volume of material can be removed
(d) Very light works could also be finished effectively

In metal cutting operations discontinuous chips are produced while machining
(a) Brittle material
(b) Ductile material
(c) soft material
(d) Hard material

A jig is a device used for
(a) Holding the work piece
(b) Loosening the work piece
(c) Holding the work piece and guide the tool
(d) Tightening the tool

Ra value of a surface refers to
(a) Type of coating given on a surface
(b) Heat treatment given on a surface
(b) Roughness of a surface
(d) Hardness of a surface

A hole to be reamed on mild steel with a 10 mm reamer. What will be the diameter of the drill for drilling the hole before reaming (undersize= 0.2 mm and oversize = 0.05 mm)?
(a) 9.85
(b) 9.8
(c) 9.75
(d) 9.7