Screw pair
Spherical pair
Turning pair
Rolling pair

(kG² + h²)/h
(kG² + h²)/h²
h²/(kG² + h²)
h/(kG² + h²)

(ω₁ - ω₂) r
(ω₁ - ω₂) 2r
(ω₁ + ω₂) r
ω₁.ω₂.r

## Theory of Machine When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be

To raise the stern and lower the bow
To raise the bow and lower the stern
To move the ship towards port side
To move the ship towards starboard

## Theory of Machine If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be

None of the listed here
Isochronous
Stable
Unstable

## Theory of Machine Angle of dwell of cam is defined as the angle

During which the follower returns to its initial position
Through which the cam rotates during the period in which the follower remains in the highest position
Moved by the cam from the instant the follower begins to rise, till it reaches its highest position
Of rotation of the cam for definite displacement of the follower