Theory of Machine A body is said to be under forced vibrations, when No external force acts on a body, after giving it an initial displacement A body vibrates under the influence of external force None of these There is a reduction in amplitude after every cycle of vibration No external force acts on a body, after giving it an initial displacement A body vibrates under the influence of external force None of these There is a reduction in amplitude after every cycle of vibration ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Angle of dwell of cam is defined as the angle Moved by the cam from the instant the follower begins to rise, till it reaches its highest position Through which the cam rotates during the period in which the follower remains in the highest position During which the follower returns to its initial position Of rotation of the cam for definite displacement of the follower Moved by the cam from the instant the follower begins to rise, till it reaches its highest position Through which the cam rotates during the period in which the follower remains in the highest position During which the follower returns to its initial position Of rotation of the cam for definite displacement of the follower ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a screw jack, the effort required to lower the load W is given by P = W tan(α + φ) P = W cos(α + φ) P = W tan(φ - α) P = W tan(α - φ) P = W tan(α + φ) P = W cos(α + φ) P = W tan(φ - α) P = W tan(α - φ) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The danger of breakage and vibration is maximum None of these Above the critical speed Near the critical speed Below the critical speed None of these Above the critical speed Near the critical speed Below the critical speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The advantage of the piston valve over the slide valve is that in the former case The pressure developed being high provides tight sealing Power absorbed is less Both wear and power absorbed are low Wear is less The pressure developed being high provides tight sealing Power absorbed is less Both wear and power absorbed are low Wear is less ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following governor is used to drive a gramophone? Pickering governor Hartnell governor Watt governor Porter governor Pickering governor Hartnell governor Watt governor Porter governor ANSWER DOWNLOAD EXAMIANS APP
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