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Measurement and Instrumentation

Measurement and Instrumentation
Which of the following is a variable displacement transducer?

None of these
 tachometer
 synchros
 potentiometer

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Measurement and Instrumentation
The watt hour meter is ______ instrument.

A transfer
An indicating
An integrating
A recording

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Measurement and Instrumentation
Unit of deflection sensitivity of a CRO is

 V / mm.
 mm / V.
 meter / volt.
 mm per mV.

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Measurement and Instrumentation
A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read

 - 795 W.
 + 795 W.
  - 597 W.
 + 597 W.

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Measurement and Instrumentation
The dynamometer principle can be used for

 ammeter, voltmeter and wattmeter.
 voltmeter only.
 wattmeter only.
 ammeter only.

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Measurement and Instrumentation
The controlling torque of an indicating instrument ______ as the deflection of the moving system increases.

Increases
Decreases
Remains same
None of the listed here

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