92) The angle of the inclined plane at which the body just begins to slide down the plane, is called helix angle.

93) In forced vibrations, the magnitude of damping force at resonance is equal to the impressed force.

94) When a slider moves on a fixed link having curved surface, their instantaneous centre lies

95) Scotch yoke mechanism is used to generate

96) The unbalanced primary forces in a reciprocating engine are