Theory of Machine The approximate straight line mechanism is a 6 bar linkage 3 bar linkage Four bar linkage 8 bar linkage 6 bar linkage 3 bar linkage Four bar linkage 8 bar linkage ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a mechanism, the fixed instantaneous centers are those centers which None of the listed here Remain in the same place for all configurations of the mechanism Moves as the mechanism moves, but joints are of permanent nature Vary with the configuration of the mechanism None of the listed here Remain in the same place for all configurations of the mechanism Moves as the mechanism moves, but joints are of permanent nature Vary with the configuration of the mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will Become equal to R/2 Remain same as before Become equal to R/4 Become equal to 2R Become equal to R/2 Remain same as before Become equal to R/4 Become equal to 2R ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Klein's construction can be used when Crank has uniform angular velocity and angular acceleration Crank has non-uniform velocity Crank has a uniform angular velocity Crank has uniform angular acceleration Crank has uniform angular velocity and angular acceleration Crank has non-uniform velocity Crank has a uniform angular velocity Crank has uniform angular acceleration ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The rotating shafts tend to vibrate violently at whirling speeds because Bearing centre line coincides with the axis Resonance is caused due to the heavy mass of the rotor The shafts are rotating at very high speeds The system is unbalanced Bearing centre line coincides with the axis Resonance is caused due to the heavy mass of the rotor The shafts are rotating at very high speeds The system is unbalanced ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a Hartnell governor, the lift of the sleeve is given by (where r₁ and r₂ = Max. and min. radii of rotation, x = Length of ball arm of the lever, and y = Length of sleeve arm of the lever) (r₁ - r₂) (x/y) (r₁ + r₂) (y/x) (r₁ + r₂) (x/y) (r₁ - r₂) (y/x) (r₁ - r₂) (x/y) (r₁ + r₂) (y/x) (r₁ + r₂) (x/y) (r₁ - r₂) (y/x) ANSWER DOWNLOAD EXAMIANS APP
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