Primary forces and couples must be balanced

Secondary forces and couples must be balanced

Both (A) and (B)

None of these

**The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness…****The method of obtaining different mechanisms by fixing in turn different links in a kinematic chain,…****Which of the following governor is used to drive a gramophone?****In a four bar chain or quadric cycle chain****The periodic time is given by (where ω = Angular velocity of the particle in rad/s)****The frequency of oscillation of a compound pendulum is****The primary unbalanced force is maximum _________ in one revolution of the crank.****Oldham's coupling is the****The periodic time of one oscillation for a simple pendulum is****The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft,…****In a circular arc cam with roller follower, the acceleration in any position of the lift will depend…****The acceleration of the reciprocating roller follower when it has contact with the straight flanks of…****A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at…****The frictional torque transmitted in a flat collar bearing, considering uniform wear, is (where r₁…****The frictional torque transmitted in a flat collar bearing, considering uniform pressure, is (where…****The secondary unbalanced force is maximum __________ in one revolution of the crank.****Transmission angle is the angle between****The Klein's method of construction for reciprocating engine mechanism****The pressure angle of a cam depends upon****In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line…****Typewriter constitutes****In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line…****The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's…****Shaft revolving in a bearing is the following type of pair****Whirling speed of the shaft is the speed at which****The direction of linear velocity of any point on a link with respect to another point on the same link…****In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is Constant, then****The instantaneous centres which vary with the configuration of mechanism are called****In S.H.M., the velocity vector w.r.t. displacement vector****The ratio of the maximum displacement of the forced vibration to the deflection due to the static force,…**