Theory of Machine A body is said to be under forced vibrations, when A body vibrates under the influence of external force No external force acts on a body, after giving it an initial displacement None of these There is a reduction in amplitude after every cycle of vibration A body vibrates under the influence of external force No external force acts on a body, after giving it an initial displacement None of these There is a reduction in amplitude after every cycle of vibration ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The two elements of a pair are said to form a _________ when they permit relative motion between them. Kinematic pair None of these Sliding pair Open pair Kinematic pair None of these Sliding pair Open pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A Porter governor is a Pendulum type governor Inertia governor Dead weight governor Spring loaded governor Pendulum type governor Inertia governor Dead weight governor Spring loaded governor ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The danger of breakage and vibration is maximum None of these Below the critical speed Near the critical speed Above the critical speed None of these Below the critical speed Near the critical speed Above the critical speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 45° + φ/2 α = 45° - φ/2 α = 90° + φ α = 90° - φ α = 45° + φ/2 α = 45° - φ/2 α = 90° + φ α = 90° - φ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Coriolis component is encountered in Slider crank mechanism Quick return mechanism of shaper Both (A) and (C) above Four bar chain mechanism Slider crank mechanism Quick return mechanism of shaper Both (A) and (C) above Four bar chain mechanism ANSWER DOWNLOAD EXAMIANS APP
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