Exercise: Measurements And Instrumentation

Questions for: Measurements And Instrumentation

Hay's bridge is suitable for inductances having low L/R ratio.
A:
True
B:
False
C:
D:
Answer: B

It is suitable for high ratio inductances.

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The accuracy of measurement by ohmmeter is very good.
A:
True
B:
False
C:
D:
Answer: B

It is very low.

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DC ampere hour meter is an indicating instrument.
A:
True
B:
False
C:
D:
Answer: B

It is an integrating instrument.

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A 0-200 V voltmeter has a sensitivity of 1 kΩ per volt. The resistance of voltmeter is
A:
1 kΩ
B:
200 kΩ
C:
100 kΩ
D:
50 kΩ
Answer: B

200 x 1 kΩ.

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In most of instruments, the controlling torque is provided by
A:
fluid fraction
B:
spring
C:
eddy current
D:
either (a) or (c)
Answer: C

Eddy current damping is very common.

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