Theory of Machine The number of centers in a crank driven slider crank mechanism is 4 2 6 4 2 6 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 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 Effects of unbalances are directly proportional to the speed Effects of unbalances are proportional to the square of the speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a mechanism, the fixed instantaneous centers are those centers which None of the listed here Vary with the configuration of the mechanism Remain in the same place for all configurations of the mechanism Moves as the mechanism moves, but joints are of permanent nature None of the listed here Vary with the configuration of the mechanism Remain in the same place for all configurations of the mechanism Moves as the mechanism moves, but joints are of permanent nature ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Flexible coupling is used because It is easy to engage and disengage It prevents shock transmission and eliminates stress reversals It transmits shocks gradually It is easy to disassemble It is easy to engage and disengage It prevents shock transmission and eliminates stress reversals It transmits shocks gradually It is easy to disassemble ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The displacement of a flat faced follower when it has contact with the flank of a circular arc cam, is given by (where R = Radius of flank, r₁ = Minimum radius of the cam, and θ = Angle turned through by the cam) R (1 - sinθ) (R - r₁) (1 - cosθ) R (1 - cosθ) (R - r₁) (1 - sinθ) R (1 - sinθ) (R - r₁) (1 - cosθ) R (1 - cosθ) (R - r₁) (1 - sinθ) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The factor which affects the critical speed of a shaft is Diameter of disc Eccentricity All of the listed here Span of shaft Diameter of disc Eccentricity All of the listed here Span of shaft ANSWER DOWNLOAD EXAMIANS APP
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