GPSC RTO Exam Most IMP MCQ Test-02

 

1. Hardenability of steel is assessed by

A) Charpy impact test
B) Rockwell hardness test
C) Jominy end-quench test
D) Open- hole test

... The answer is C)
Jominy end-quench test

2. An atomic packing factor (APF) for the BCC unit cell of hard spheres atoms will be

A) 0.63
B) 0.68
C) 0.73
D) 0.78

... The answer is B)
0.68

3. The distinct characteristic of Invar is

A) It is magnetic
B) It has low coefficient of thermal expansion
C) It has high tensile strength
D) It is non corrosive

... The answer is B)
It has low coefficient of thermal expansion

4.An alloy produced by adding 1 % of tin to Muntz metal is called as

A) A brass
B) Admiralty brass
C) Naval brass
D) Leaded brass

... The answer is C)
Naval brass

5.The speed at which the shaft runs, so that the deflection of the shaft from the axis of rotation becomes infinite, is known as

A)whipping speed
B) damping speed
C) resonant speed
D) gravitational speed

... The answer is A)
whipping speed

6. The accurate method of finding the natural frequency of transverse vibrations of a system of several loads attached to some shaft is

A) Dunkerley method
B) energy method
C) Stodola method
D) Dunkerley and energy method

... The answer is B)
energy method

7. Hollow shafts are stronger than solid shafts having same weight because

A) the stiffness of hollow shaft is less than that of solid shaft
B) the strength of hollow shaft is more than that of solid shaft
C) the natural frequency of hollow shaft is less than that of solid shaft
D) in hollow shafts, material is not spread at large radius

... The answer is B)
the strength of hollow shaft is more than that of solid shaft

8. To avoid self-engagement in cone clutch, its semi-cone angle is always kept

A)smaller than the angle of static friction
B) equal to the angle of static friction
C) greater than the angle of static friction
D) half of the angle of static friction

... The answer is C)
greater than the angle of static friction

9. Certain quantities cannot be located on the graph by a point but are given by a point but are given by the area under the curve corresponding to the process. These quantities in concepts of thermodynamics are called as

A) cyclic functions
B) point functions
C) path functions
D) real function

... The answer is C)
path functions

10. In liquid metals, thermal boundary layer develops much faster than velocity boundary layer due to

A) lower value of Nusselt number
B) higher value of Prandtl number
C) lower value of Prandtl number
D) higher value of Nusselt number

... The answer is C)
lower value of Prandtl number