## Theory of Machine A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will

Become equal to R/4
Become equal to R/2
Become equal to 2R
Remain same as before

## Theory of Machine The ratio of maximum fluctuation of energy to the work-done per cycle is called

Coefficient of fluctuation of energy
Fluctuation of energy
Maximum fluctuation of energy
None of these

Inversion
Mechanism
Structure
Kinematic chain

π/ω
2π/ω
ω × 2π
ω/2π

## Theory of Machine In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

Total lift, total angle of lift, minimum radius of cam and cam speed
Mass of cam follower linkage, spring stiffness and cam speed
Total lift, centre of gravity of the cam and cam speed
Radius of circular arc, cam speed, location of centre of circular arc and roller diameter

2ωv
ω²v
ωv
2ωv²