21. |
With reference to a McLeod gauge, the ratio V1/a is called ______.
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Answer:
Option (d) |
22. |
The cross-section of a Bourdon tube is ______.
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Answer:
Option (b) |
23. |
Which of the following devices works on the principle of mutual inductance?
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Answer:
Option (d) |
24. |
When pressure is applied onto the diaphragm, the distance between the two metal plates changes, which in turn changes the _______.
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Answer:
Option (a) |