Theory of Machine If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach 0° 180° 90° 360° 0° 180° 90° 360° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a simple harmonic motion, the velocity vector with respect to displacement vector Is in phase Leads by 180° Lags by 90° Leads by 90° Is in phase Leads by 180° Lags by 90° Leads by 90° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Whirling speed of the shaft is the speed at which Torsional vibrations occur Shaft tends to vibrate vigorously in transverse direction Combination of transverse and longitudinal vibration occurs Shaft tends to vibrate in longitudinal direction Torsional vibrations occur Shaft tends to vibrate vigorously in transverse direction Combination of transverse and longitudinal vibration occurs Shaft tends to vibrate in longitudinal direction ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where ω = Angular velocity of the cam shaft) ω (r₁ r₂) sinθ ω (r₁ r₂) cosθ ω (r₁ + r₂) sinθ sec2θ ω (r₁ + r₂) cosθ cosec2θ ω (r₁ r₂) sinθ ω (r₁ r₂) cosθ ω (r₁ + r₂) sinθ sec2θ ω (r₁ + r₂) cosθ cosec2θ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than 1 0.25 2 0.5 1 0.25 2 0.5 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Higher pairs are those which have Surface contact between the two elements when in motion Point or line contact between the two elements when in motion Elements of pairs not held together mechanically Two elements that permit relative motion Surface contact between the two elements when in motion Point or line contact between the two elements when in motion Elements of pairs not held together mechanically Two elements that permit relative motion ANSWER DOWNLOAD EXAMIANS APP
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