111. A point B on a rigid link AB moves with respect to A with angular velocity $$\omega $$ rad/s. The total acceleration of B with respect to A will be equal to
112. 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
113. The lead screw of a lathe with nut forms a
114. The C.G. of a link in any mechanism would experience
115. There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears are 20, 60, 30, 80, 25 and 75 respectively. The ratio of angular speeds of the driven (F) to the driver (A) of the drive is
116. For a twin cylinder V-engine, the crank positions for primary reverse cranks and secondary direct cranks are shown in the below figure. The engine is a
117. In a rigid link OA, velocity of 'A' w.r.t. 'O' will be
118. When two pulleys are connected by means of a cross belt drive, then both the pulleys will rotate in _________ directions.
119. A rotary internal combustion engine has __________ cylinders.
120. A mechanism consisting of four links is called a __________ mechanism.
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