Theory of Machine In a four stroke I.C. engine, the turning moment during the compression stroke is Positive throughout Negative during major portion of the stroke Negative throughout Positive during major portion of the stroke Positive throughout Negative during major portion of the stroke Negative throughout Positive during major portion of the stroke ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of 2.22 mm 2 mm 2.50 mm 3.0 mm 2.22 mm 2 mm 2.50 mm 3.0 mm ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is(Where μ = Coefficient of friction, W=Load over the bearing, R=Radius of bearing) ½μWR μwr ²/₃ μWR ¾μWR ½μWR μwr ²/₃ μWR ¾μWR ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The train value of a gear train is Reciprocal of velocity ratio of a gear train Always less than unity Always greater than unity Equal to velocity ratio of a gear train Reciprocal of velocity ratio of a gear train Always less than unity Always greater than unity Equal to velocity ratio of a gear train ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In higher pair, the relative motion is Purely turning Purely rotary Combination of sliding and turning Purely sliding Purely turning Purely rotary Combination of sliding and turning Purely sliding ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In Meyer's expansion valve, the main valve is driven by an eccentric having an angle of advance from 15°-25° 30°-40° 25°-30° 10°-15° 15°-25° 30°-40° 25°-30° 10°-15° ANSWER DOWNLOAD EXAMIANS APP
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