Theory of Machine Which of the following mechanisms produces mathematically an exact straight line motion? Tchebicheff mechanism Grasshopper mechanism Watt mechanism Peaucellier's mechanism Tchebicheff mechanism Grasshopper mechanism Watt mechanism Peaucellier's mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The unbalanced primary forces in a reciprocating engine are Balanced partially Not balanced Balanced completely Balanced by secondary forces Balanced partially Not balanced Balanced completely Balanced by secondary forces 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) 2r (ω₁ + ω₂) r ω₁.ω₂.r (ω₁ - ω₂) r (ω₁ - ω₂) 2r (ω₁ + ω₂) r ω₁.ω₂.r (ω₁ - ω₂) r ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to Minimize the effect of secondary forces Have perfect balancing Minimize the effect of primary forces To start the locomotive quickly Minimize the effect of secondary forces Have perfect balancing Minimize the effect of primary forces To start the locomotive quickly ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be To raise the nose and tail To dip the nose and tail To dip the nose and raise the tail To raise the nose and dip the tail To raise the nose and tail To dip the nose and tail To dip the nose and raise the tail To raise the nose and dip the tail ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The relative velocity of B with respect to A in a rigid link AB is Perpendicular to AB Along AB At 45° to AB Parallel to AB Perpendicular to AB Along AB At 45° to AB Parallel to AB ANSWER DOWNLOAD EXAMIANS APP
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