At node of the shaft:

 a) The vibrations are minimum
 b) The vibrations are maximum
 c) The vibrations are average
 d) The vibrations are zero

ISRO Scientist-2010

The vibrations are zero.

A Vibrometer :

 a) Indicates vibration amplitude
 b) Indicates vibration frequency
 c) Indicates mature of vibrations
 d) Only indicates second and above harmonics

ISRO Scientist-2010

Indicates vibration amplitude.

In simple harmonic motion the acceleration is proportional to

 a) Displacement
 b) Linear velocity
 c) Angular velocity
 d) Rate of change of angular velocity

ISRO Scientist-2010

Displacement.

Sensitiveness of a Governor is:

 a) The ratio of the difference between the maximum and minimum equilibrium speed to the mean equilibrium speed.
 b) The ratio of the maximum speed to minimum speed within the operating range
 c) The ratio of the difference between the maximum and mean speed to that of minimum to mean speed
 d) The range of variation of engine speed

ISRO Scientist-2010

The ratio of the difference between the maximum and minimum equilibrium speed to the mean equilibrium speed.

A screw having coefficient of friction equal to or greater than the tangent of the load angle is known as

 a) Machine screw
 b) Self locking screw
 c) Set screws
 d) Ball-bearing type screws

ISRO Scientist-2010

Self locking screw.