The speed of  the crankshaft is founded to vary between 120 r.p.m and 150 r.p.m during one cycle of operation. What is the coefficient of fluctuation of speed?

If C_f is the coefficient of speed fluctuation of a flywheel then the ratio of ${\omega }_{\max .}/{\omega }_{\min .}$ will be -

In a flywheel, the safe stress is 25.2 MN/m² and the density is 7 g/cm³, then the maximum peripheral velocity will be?

Flywheel absorbs energy during those periods of crank rotation when

The primary function of the flywheel is

The flywheel of a machine having weight of 4500 N and radius of gyration of 2 m has cyclic fluctuation of speed from 125 r.p.m to 120 r.p.m. Assuming g=10m/s² the maximum fluctuation of energy is  

In the case of a flywheel, the maximum fluctuation of energy is the

For a spring controlled governor to be stable the controlling force (F) is related to the radius (r) by the equation

The function of the governor is

In a centrifugal governor, the controlling force is observed to be 14 N, when the radius of rotation is 2 cm and 38 N, when the radius of rotation is 6 cm, the governor:

In a watt governor the weight of the ball is 50 N and the friction at the sleeve is 10 N. The coefficient of detention would be-

The governor is said to be stable when-

When the speed of the engine fluctuate continuously above and below the mean speed, then the governor is said to be

The sensitivity of an isochronous governor is-

Given that, m = mass of ball of the governor

$\omega =$angular momentum of governor

g = acceleration due to gravity, the height of watt’s governor is given by -

For a given fractional change of speed, if the displacement of the sleeve is high, then the governor is said to be

Consider the following governors –

1. Porter governor

2. Hartnell governor

3. Watt governor

4. Proell governor

The correct sequence of development of these governor is

In a Hartnell governor, the mass of each ball is 2.5 kg. Maximum and minimum speeds of rotation are 10 rad/s and 8 rad/s respectively. Maximum and minimum radii of rotation are 20 cm and 14 cm respectively. The length of horizontal and vertical arms of ball crank levers are 10 cm and 20 cm respectively. Neglecting obliquity and gravitational effects, the lift of the sleeve is-

For minimizing speed fluctuations of an engine as a prime mover, it must have

The magnitude of coriolis component of acceleration of a slider moving at a velocity V on a link rotating at angular speed $\omega$ is?

What is the instantaneous centers of a constrained kinematic chain?

If the no. of link is 4 what is the total I.C. (Instantaneous center)?

What will be the instantaneous center of a rolling sphere on a plan surface?

What is I.C. of object sliding on a plane surface?

A ball is thrown upwards and it returns to the ground describing a parabolic path which of the following remains constant?