Theory of Machine In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from 15°-25° 25°-30° 30°-40° 10°-15° 15°-25° 25°-30° 30°-40° 10°-15° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable. Remains constant Decreases Increases None of these Remains constant Decreases Increases None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become tp /4 16 tp 4 tp tp /16 tp /4 16 tp 4 tp tp /16 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that Both governors A and B are equally sensitive Governor B is more sensitive than governor A None of these Governor A is more sensitive than governor B Both governors A and B are equally sensitive Governor B is more sensitive than governor A None of these Governor A is more sensitive than governor B ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The maximum fluctuation of energy is the Variations of energy above and below the mean resisting torque line Ratio of the mean resisting torque to the work-done per cycle Sum of the maximum and minimum energies Difference between the maximum and minimum energies Variations of energy above and below the mean resisting torque line Ratio of the mean resisting torque to the work-done per cycle Sum of the maximum and minimum energies Difference between the maximum and minimum energies ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine For an isochronous Hartnell governor (where r₁ and r₂ = Maximum and minimum radius of rotation of balls respectively, S₁ and S₂ = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve) (m.g - S₁)/(m.g - S₂) = r₂/r₁ (m.g + S₁)/(m.g + S₂) = r₁/r₂ S₁/S₂ = r₁/r₂ S₂/S₁ = r₁/r₂ (m.g - S₁)/(m.g - S₂) = r₂/r₁ (m.g + S₁)/(m.g + S₂) = r₁/r₂ S₁/S₂ = r₁/r₂ S₂/S₁ = r₁/r₂ ANSWER DOWNLOAD EXAMIANS APP
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