Theory of Machine Lower pairs are those which have Elements of pairs not held together mechanically Surface contact between the two elements when in motion Two elements that permit relative motion Point or line contact between the two elements when in motion Elements of pairs not held together mechanically Surface contact between the two elements when in motion Two elements that permit relative motion Point or line contact between the two elements when in motion 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) μwr ¾μWR ²/₃ μWR ½μWR μwr ¾μWR ²/₃ μWR ½μWR ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Whirling speed of the shaft is the speed at which Torsional vibrations occur Shaft tends to vibrate in longitudinal direction Shaft tends to vibrate vigorously in transverse direction Combination of transverse and longitudinal vibration occurs Torsional vibrations occur Shaft tends to vibrate in longitudinal direction Shaft tends to vibrate vigorously in transverse direction Combination of transverse and longitudinal vibration occurs ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The tractive force is maximum or minimum when the angle of inclination of crank with the line of stroke (θ) is equal to 270° and 360° 90° and 180° 135° and 315° 0° and 90° 270° and 360° 90° and 180° 135° and 315° 0° and 90° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When a body is subjected to transverse vibrations, the stress induced in a body will be Shear stress Tensile stress Compressive stress Bending stress Shear stress Tensile stress Compressive stress Bending stress ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following governor is used to drive a gramophone? Pickering governor Porter governor Watt governor Hartnell governor Pickering governor Porter governor Watt governor Hartnell governor ANSWER DOWNLOAD EXAMIANS APP
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