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 6,000 r.p.m. 9,360 r.p.m. 5,367 r.p.m. 12,000 r.p.m. 6,000 r.p.m. 9,360 r.p.m. 5,367 r.p.m. 12,000 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following has sliding motion? Cross-head Crank pin Connecting rod Crank Cross-head Crank pin Connecting rod Crank ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity. Minimum Maximum None of these Zero Minimum Maximum None of these Zero ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The number of links in pantograph mechanism is equal to 4 2 3 5 4 2 3 5 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach 0° 90° 180° 360° 0° 90° 180° 360° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is None of these Both (A) and (B) 180° and 360° 0° and 90° None of these Both (A) and (B) 180° and 360° 0° and 90° ANSWER DOWNLOAD EXAMIANS APP
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