Bevel gear
Helical gear
Spur gear
None of these

## Theory of Machine Which is the false statement about the properties of instantaneous center?

The two rigid links have no linear velocities relative to each other at the instantaneous center
The two rigid links which have no linear velocity relative to each other at this center have the same linear velocity to the third rigid link
At the instantaneous center of rotation, one rigid link rotates instantaneously relative to another for the configuration of mechanism considered
The double center can be denoted either by O2 or O12, but proper selection should be made

Mechanism
Structure
Inversion
Machine

## Theory of Machine In a spring controlled governor, when the controlling force ____ as the radius of rotation increases, it is said to be a stable governor.

Increases
Remains constant
None of the listed here
Decreases

tanα/tan (α - φ)
tanα/tan (α +φ)
tan (α + φ)/tanα
tan (α - φ)/tanα

## Theory of Machine Which of the following is a spring controlled governor?

Hartung governor
Wilson-Hartnell governor
Hartnell governor
All of these