C:-temporary

D:-hard

Correct Answer:- Option-B
Question49:-Brass is an alloy of

A:-copper and tin

B:-copper and lead

C:-copper and zinc

D:-copper and aluminium

Correct Answer:- Option-C
Question50:-Purpose of using lubrication

A:-reduces friction

B:-prevents wear
:-both A and B

D:-none of the above

Correct Answer:- Option-C
Question51:-The temperature at which the oil catches fire and continues to be in flame is called

A:-flash point

C:-pour point
D:-oiliness
Correct Answer:- Option-B
Question52:-Machining processes that involve the removal of material in the form of chips can be called
A:-conventional machining process
-electro discharge machining process
C:-nonconventional machining process
D:-electro chemical machining process
Correct Answer:- Option-A
Question53:-Purpose of machine foundation
it must support the machines at the given height and must be able to take up static and dynamic loads
should preserve the alignment of the machine
should absorb the vibration of the moving parts
D:-all of the above
Correct Answer:- Option-D
Question54:-10 machinists completed a work in 9 days. How long will it take for 15 machinists to do the same work ?

Correct Answer:- Option-B
Question55:-The square root of 0.04 is

A:-0.2
.02

C:-0.6

D:-0.4

Correct Answer:- Option-A
Question56:-The cutting speed is expressed in

A:-millimeter/sec

B:-meter/sec

C:-millimeter/min

D:-meter/min

Correct Answer:- Option-D
Question57:-The conic section obtained by cutting plane parallel to the axis of cone is
A:-Ellipse
-Parabola

C:-Hyperbola

D:-None of the above

Correct Answer:- Option-C
Question58:-The rate of change of displacement of a body is called

A:-acceleration