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Measurement and Instrumentation

Measurement and Instrumentation
Schering bridge is used to measure which of the following?

 Inductance.
 Frequency.
 Resistance.
  Capacitance.

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Measurement and Instrumentation
For measurement of mutual inductance we can use

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

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Measurement and Instrumentation
Standard resistor ia made from

Manganin
Silver
Platinum
Nichrome

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Measurement and Instrumentation
No eddy current and hysteresis losses occur in

Electrostatic instruments
Moving iron instruments
PMMC instruments
Electrodynamo meter instruments

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Measurement and Instrumentation
Which of following voltmeters would you use for measuring voltage across 20KΩ resistance

 Voltmeter having sensitivity of 1 KW/V.
 Voltmeter having a resistance of 5 ΩK.
  Voltmeter having sensitivity of 10 KW/V.
 None of above.

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Measurement and Instrumentation
A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be

  0 W.
 50 W.
 25 W.
 100 W.

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