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Measurement and Instrumentation

Measurement and Instrumentation
For measurement of mutual inductance we can use

Any of the listed here
Heavyside bridge
Maxwell's bridge
Anderson bridge

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Measurement and Instrumentation
A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be

 0.67 A.
 0.70 A.
 0.25 A.
 0.50 A.

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Measurement and Instrumentation
The pointer of an indicating instrument is generally made of _______

Copper
Aluminium
Silver
Soft steel

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Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

 3600 rev/KWh.
 1000 rev/KWh.
 3750 rev/KWh.
 960 rev/KWh.

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Measurement and Instrumentation
What is the name of physical quantities which are independent of each other?

None of these
 Numerical quantity
 Derived quantity
 Fundamental quantity

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Measurement and Instrumentation
Two capacitance, C1 = 150 ± 2.4µF and C2 = 120 ± 1.5 µF are connected in parallel. What is the limiting error of the resultant capacitance C (in µF) ?

 2.4µF
 1.5µF
 0.9µF
 3.9µF

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