VSSC Machinist Paper 2015

Vikram Sarabhai Space Center Machinist Paper 2015

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Density of kerosene is
(a) 0.7 gm/cc
(b) 0.8 gm/cc
(c) 1.0 gm/cc
(d) 1.2 gm/cc

Cutting speed is expressed in
(a) Meters/minute
(b) Revolutions/minute
(c) Strokes/minute
(d) None

Reamer is used for
(a) Making a hole
(b) finishing the hole to size
(c) Counter boring a hole
(d) None of the above

Flute in a drill is provided for
(a) Guiding the tool
(b) removal of chips
(c) holding the tool
(d) None of the above

Single point cutting tool means
(a) No cutting edge
(b) one cutting edge
(c) Holding arrangement for tool
(d) None of the above

The hardest material is
(a) Cubic boron nitride
(b) tungsten carbide
(c) carbon steel
(d) diamond

Carbon is used as alloying element in carbon steel because
(a) Carbon is a cheap material
(b) Carbon is easily available
(c) Carbon enables heat treatment of steel
(d) None

Jig bushings are generally made of
(a) Mild steel
(b) Cast iron
(c) Hardened steel
(d) Brass

A milling machine is specified by
(a) Longitudinal, cross and vertical traverse
(b) Power available
(c) Spindle nose taper
(d) All the above

18-8 stainless steel means
(a) 18% tungsten and 8% chromium
(b) 18% chromium and 8% nickel
(c) 18% nickel and 8% chromium
(d) 18% chromium and 8% cobalt

Open tolerance is an indication of
(a) Medium precision
(b) High precision
(c) Very high precision
(d) Low precision
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