Q. For a 4 cylinder engine, when the pressure inside the cylinders exceeds the atmospheric pressure then.
β
Correct Answer: (A)
work is done by the gases
Dynamics of Machines MCQs | Page - 1
Dear candidates you will find MCQ questions of Dynamics of Machines here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. In a punching press, which of the following quantity is constant?
β
Correct Answer: (B)
torque
Q. In a punching press, load is 0 at the time of punching.
β
Correct Answer: (B)
false
Q. The maximum shear force required for punching depends on
β
Correct Answer: (A)
sheared area
Q. A machine punching 38 mm holes in 32 mm thick plate requires 7 N-m of energy per sq. mm of sheared area, find the maximum shear force required.
β
Correct Answer: (A)
26.7 kn
Q. The relation between stroke punch s and radius of crank r is
β
Correct Answer: (B)
s=2r
Q. If the stroke punch is 100mm, find the radius of the crank in mm.
β
Correct Answer: (C)
50
Q. Energy during actual punching operation is same as the energy supplied by the motor.
β
Correct Answer: (B)
false
Q. The balance energy required for punching is supplied by the flywheel by
β
Correct Answer: (B)
decrease in its kinetic energy
Q. When the length of the connecting rod is unknown then the value (θ2 –θ1)/2π is equal to
β
Correct Answer: (B)
t/2s
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