Explore topic-wise MCQs in Machine Dynamics.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Dynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

A shaft fitted with a flywheel rotates at 250 r.p.m. and drives a machine, the torque fluctuated about 18750 N-m, find the power required to drive the machine.

A. 49.125 kW
B. 24.56 kW
C. 12.28 kW
D. 6.14 kW
Answer» B. 24.56 kW
Discussion
2.

For a 4 stroke IC engine, Tmean = 1875 N-m, then find the work done per cycle.

A. 23.56 kJ
B. 11.78 kJ
C. 5.89 kJ
D. 2.94 kJ
Answer» B. 11.78 kJ
Discussion
3.

To calculate power generated, product of maximum torque and angular speed is taken.

A. True
B. False
Answer» C.
Discussion
4.

For a 4 stroke IC engine, the angle θ assumes a value equal to _______

A. π
B. 2π
C. 4π
D. π/2
Answer» D. π/2
Discussion
5.

Work done per cycle is calculated as _______

A. Tmean × θ
B. Tmin × θ
C. Tmax × θ
D. Tmax × θ/2
Answer» B. Tmin × θ
Discussion
6.

Coefficient of fluctuation of energy is ratio of _______

A. Mean fluctuation energy to work done per cycle
B. Maximum fluctuation energy to work done per cycle
C. Minimum fluctuation energy to work done per cycle
D. Mean fluctuation energy to power generated per cycle
Answer» C. Minimum fluctuation energy to work done per cycle
Discussion
7.

From the turning moment diagram shown below, the minimum speed will occur at point _____

A. p
B. b
C. q
D. c
Answer» B. b
Discussion
8.

From the turning moment diagram shown below, the maximum speed will occur at point _____

A. p
B. b
C. q
D. c
Answer» D. c
Discussion
9.

The fluctuation of energy is the variation of energy above the line of minimum torque.

A. True
B. False
Answer» C.
Discussion
10.

In the figure given below, the areas BbC, CcD represent _______

A. Power generated
B. Power lost
C. Fluctuation of energy
D. Change in momentum
Answer» D. Change in momentum
Discussion