## Theory of Machine The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is

(1/2) μ W R cosecα
μ W R cosecα
(3/4) μ W R cosecα
(2/3) μ W R cosecα

## Theory of Machine The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m).(dx/dt) + (s/m).x = 0, if the roots of the equation are __________ then the system will be under damped.

Real
None of these
Equal
Complex conjugate

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

## Theory of Machine The displacement of a flat faced follower when it has contact with the flank of a circular arc cam, is given by (where R = Radius of flank, r₁ = Minimum radius of the cam, and θ = Angle turned through by the cam)

(R - r₁) (1 - cosθ)
R (1 - sinθ)
(R - r₁) (1 - sinθ)
R (1 - cosθ)

Machine
Mechanism
Inversion
Structure

## Theory of Machine When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a

D-slide valve
Governor
Meyer's expansion valve
Flywheel