Theory of Machine Crowning on pulleys helps In decreasing the slip of the belt For automatic adjustment of belt position so that belt runs centrally Increase belt and pulley life In increasing velocity ratio In decreasing the slip of the belt For automatic adjustment of belt position so that belt runs centrally Increase belt and pulley life In increasing velocity ratio ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in All of these Transverse vibrations Torsional vibrations Longitudinal vibrations All of these Transverse vibrations Torsional vibrations Longitudinal vibrations ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The maximum efficiency of spiral gears is (where θ = Shaft angle, and φ = Friction angle) cos (θ - φ) + 1/ sin (θ + φ) + 1 cos (θ + φ) + 1/ cos (θ - φ) + 1 sin (θ + φ) + 1/ cos (θ - φ) + 1 cos (θ - φ) + 1/ cos (θ + φ) + 1 cos (θ - φ) + 1/ sin (θ + φ) + 1 cos (θ + φ) + 1/ cos (θ - φ) + 1 sin (θ + φ) + 1/ cos (θ - φ) + 1 cos (θ - φ) + 1/ cos (θ + φ) + 1 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as Damping coefficient Damping factor Logarithmic decrement Magnification factor Damping coefficient Damping factor Logarithmic decrement Magnification factor 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(α - φ) P = W tan(φ - α) P = W tan(α + φ) P = W cos(α + φ) P = W tan(α - φ) P = W tan(φ - α) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A cam mechanism imparts following motion Rotating Oscillating Reciprocating All of these Rotating Oscillating Reciprocating All of these ANSWER DOWNLOAD EXAMIANS APP
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