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Measurement and Instrumentation

Measurement and Instrumentation
A null type instrument as compared to a deflected type instrument has

 a lower sensitivity.
 a faster response.
All of these
 a higher accuracy.

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Measurement and Instrumentation
For measurement of high direct voltage, one would use _____ voltmeter.

PMMC
Electrostatic
Moving iron
Hot wire

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Measurement and Instrumentation
An induction meter can handle current upto

30 A
100 A
60 A
10 A

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Measurement and Instrumentation
The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures

Active power of Y phase
Reactive power of R phase
Active power in R phase
Power proportional to 3 phase power if the load is balanced

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

 Inductance.
  Capacitance.
 Frequency.
 Resistance.

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Measurement and Instrumentation
A current of is measured with a thermocouple, 5 A full scale meter. What is the meter reading?

 2.03 A.
 6.09 A.
 5 A.
 4.06 A.

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