Theory of Machine The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is Both (A) and (B) 180° and 360° None of these 0° and 90° Both (A) and (B) 180° and 360° None of these 0° and 90° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration. Unpredictable Different Same None of these Unpredictable Different Same None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The unbalanced force due to revolving masses Constant in magnitude and direction both Varies in magnitude and direction both Varies in direction but constant in magnitude Varies in magnitude but constant in direction Constant in magnitude and direction both Varies in magnitude and direction both Varies in direction but constant in magnitude Varies in magnitude but constant in direction ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The dynamic friction is the friction experienced by a body, when the body None of these Just begins to slide over the surface of the other body Is in motion Is at rest None of these Just begins to slide over the surface of the other body Is in motion Is at rest ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centers lie on A. A triangle A triangle Two lines A point A straight line A triangle Two lines A point A straight line ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is 5,367 r.p.m. 6,000 r.p.m. 12,000 r.p.m. 9,360 r.p.m. 5,367 r.p.m. 6,000 r.p.m. 12,000 r.p.m. 9,360 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
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