Theory of Machine For dynamic balancing of a shaft The net dynamic force acting on the shaft is equal to zero The net couple due to the dynamic forces acting on the shaft is equal to zero Both (A) and (B) None of these The net dynamic force acting on the shaft is equal to zero The net couple due to the dynamic forces acting on the shaft is equal to zero Both (A) and (B) None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance from 60°-70° 70°- 80° 80°- 90° 50°- 60° 60°-70° 70°- 80° 80°- 90° 50°- 60° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Coriolis component of acceleration is taken into account for Slider crank mechanism Four bar chain mechanism All of these Quick return motion mechanism Slider crank mechanism Four bar chain mechanism All of these Quick return motion mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis Below the origin Any one of these Above the origin At the origin Below the origin Any one of these Above the origin At the origin ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A spring controlled governor is found unstable. It can be made stable by Increasing the ball mass Decreasing the spring stiffness Increasing the spring stiffness Decreasing the ball mass Increasing the ball mass Decreasing the spring stiffness Increasing the spring stiffness Decreasing the ball mass ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The rotating shafts tend to vibrate violently at whirling speeds because The shafts are rotating at very high speeds Resonance is caused due to the heavy mass of the rotor Bearing centre line coincides with the axis The system is unbalanced The shafts are rotating at very high speeds Resonance is caused due to the heavy mass of the rotor Bearing centre line coincides with the axis The system is unbalanced ANSWER DOWNLOAD EXAMIANS APP
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