Dynamics of Machinery (3151911) MCQs
MCQs of Turning moment diagrams and flywheel
| 61. |
The ratio of maximum fluctuation of speed to the mean speed is called
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Answer:
Option (a) |
| 62. |
Reciprocal of coefficient of fluctuation of speed is called
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Answer:
Option (b) |
| 63. |
The coefficient of fluctuation of the speed of the flywheel is given by (Where N1 =Maximum speed, N2 = Minimum speed, N = Mean speed)
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Answer:
Option (a) |
| 64. |
The coefficient of fluctuation of speed, when the maximum and minimum speeds are 300 rpm and 290 rpm
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Answer:
Option (a) |
| 65. |
The radius of gyration (k) for rim type flywheel having radius ‘r’ is given by
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Answer:
Option (c) |
| 66. |
The flywheel of a machine having the weight of 4500 N and radius of gyration of 2 m have cyclic fluctuation of speed from 125 r.p.m to 120 r.p.m. Assuming g = 10m/s2, the maximum fluctuation of energy is
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Answer:
Option (d) |
| 67. |
A circular solid disc of uniform thickness 20 mm, radius 200 mm and mass 20 kg, is used as a flywheel. If it rotates at 600 rpm, the kinetic energy of the flywheel, in Joules is
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Answer:
Option (b) |
| 68. |
In a punching press, which of the following quantity is constant?
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Answer:
Option (b) |
| 69. |
In a punching press, the load is 0 at the time of punching.
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Answer:
Option (b) |
| 70. |
The maximum shear force required for punching depends on ________.
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Answer:
Option (a) |
