Theory of Machi...

In a rim type flywheel, mass is distributed uniformly throughout. On a second rim type flywheel, mass is concentrated at 1/2 of the initial radius. If both wheels are rotating at the same angular velocity, what is the ratio of energy stored in the first flywheel to the second flywheel?

A flywheel is fitted to the crank shaft of an engine having W amount of indicated work per revolution. Permissible limits of coefficient of fluctuation of energy and speed are C_E and C_S respectively. The kinetic energy of the flywheel is given by

If maximum and minimum equilibrium speed of governor are 700 rpm and 300 rpm respectively. What is the sensitivity of governor?

For a porter governor the following data is obtained.

Mass of fly balls = 4 kg each, Mass of sleeve = 20 kg, Power = 4 J, Maximum rise of sleeve = 250 mm

Torque requirement of a punching machine is given as T= 200 + 30sinθ, where θ is a crank angle. A flywheel with 15 kg.m² moment of inertia is attached. If power is supplied at a uniform rate, what is the maximum acceleration of flywheel possible (rad/s²)?

A steam engine develops 300 kW power at 9.5 rad/s. The coefficient of fluctuation of energy is found to be 0.1 and fluctuation of speed is kept within ± 0.5% of mean speed. Find the mass of the flywheel (in kg) required if the radius of gyration is 2 m.

In a cam design, the rise motion is given by a simple harmonic motion (SHM) 

\(s = \frac{h}{2}\left( {1 - cos\frac{{\pi \theta }}{\beta }} \right)\). Where, h is total rise, θ is camshaft angle, β is the total angle of the rise interval.

The cross-section of a flywheel is square and the rim has a mean radius of 0.50 m. The density of flywheel is 7000 kg/m³ and it is employed in a punching press which runs at 240 rpm. During punching operation which lasts one-quarter of a revolution energy requirement from flywheel is 3 kJ. If the coefficient of speed fluctuation is 0.18 and the rim contributes 85% of total moment of inertia then the cross section of the flywheel is _________×  10^-3 m².

In a spring controlled governor, controlling force varies linearly with radius of rotation. When controlling force is 1500 N, radius of rotation is 200 mm and when controlling force is 800 N, radius of rotation is 120 mm. By changing initial tension governor behaves as isochronous governor. What is the value of change in tension and isochronous speed? (mass of balls = 8 kg)