Theory of Machine The relative velocity of B with respect to A in a rigid link AB is Parallel to AB Perpendicular to AB Along AB At 45° to AB Parallel to AB Perpendicular to AB Along AB At 45° to AB ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Under logarithmic decrement, the amplitude of successive vibrations are Constant In logarithmic progression In arithmetic progression In geometric progression Constant In logarithmic progression In arithmetic progression In geometric progression ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a Sliding pair Screw pair Spherical pair Turning pair Sliding pair Screw pair Spherical pair Turning pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a pantograph, all the pairs are Spherical pairs Self-closed pairs Turning pairs Sliding pairs Spherical pairs Self-closed pairs Turning pairs Sliding pairs ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the Effects of unbalances are directly proportional to the speed Effects of unbalances are proportional to the square of the speed Unbalanced forces are not dangerous at higher speeds Unbalanced couples are caused only at higher speeds Effects of unbalances are directly proportional to the speed Effects of unbalances are proportional to the square of the speed Unbalanced forces are not dangerous at higher speeds Unbalanced couples are caused only at higher speeds ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity ω₁ rad/s in the clockwise direction and the link OB turns with angular velocity ω₂ rad/s in the anticlockwise direction, then the rubbing velocity at the pin joint O is (where r = Radius of the pin at O) ω₁.ω₂.r (ω₁ - ω₂) 2r (ω₁ + ω₂) r (ω₁ - ω₂) r ω₁.ω₂.r (ω₁ - ω₂) 2r (ω₁ + ω₂) r (ω₁ - ω₂) r ANSWER DOWNLOAD EXAMIANS APP
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