Top 80+ Solved Dynamics of Machines MCQ Questions Answer
Q. When the sleeve of a Porter governor moves downwards, the governor speed
a. increases
b. decreases
c. remains unaffected
d. first increases and then decreases
Q. A Hartnell governor is a
a. dead weight governor
b. pendulum type governor
c. spring loaded governor
d. inertia governor
Q. Which of the following is a pendulum type governor?
a. watt’s governor
b. porter governor
c. hartnell governor
d. none of the mentioned
Q. The axis of precession is to the plane in which the axis of spin is going to rotate.
a. parallel
b. perpendicular
c. spiral
d. none of the mentioned
Q. The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be
a. to dip the nose and tail
b. to raise the nose and tail
c. to raise the nose and dip of the tail
d. to dip the nose and raise the tail
Q. The steering of a ship means
a. movement of a complete ship up and down in vertical plane about transverse axis
b. turning of a complete ship in a curve towards right or left, while it moves forward
c. rolling of a complete ship side-ways
d. none of the mentioned
Q. When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be
a. to move the ship towards star-board
b. to move the ship towards port side
c. to raise the bow and lower the stern
d. to raise the stern and lower the bow
Q. It is required to lift water at the top of a high building at the rate of 50 litres/min. Assuming the losses due to friction equivalent to 5 m and those due to leakage equal to 5 m head of water, efficiency of pump 90%, decide the kilowatt capacity of motor required to drive the pump.
a. 0.102 kw
b. 0.202 kw
c. 0.302 kw
d. 0.402 kw
Q. Power is transmitted by an electric motor to a machine by using a belt drive. The tensions on the tight and slack side of the belt are 2200 N and 1000 N respectively and diameter of the pulley is 600 mm. If speed of the motor is 1500 r.p.m, find the power transmitted.
a. 46.548 kw
b. 56.548 kw
c. 66.548 kw
d. 76.548 kw