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Measurement and Instrumentation

Measurement and Instrumentation
The dynamometer principle can be used for

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

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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
A moving coil permanent magnet instrument can be used as ______ by using a low resistance shunt.

Ammeter
Flux meter
Voltmeter
Ballastic galvanometer

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Measurement and Instrumentation
The resistance can be measured most accurately by

Multimeter
Megger
Bridge method
Voltmeter-ammeter method

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Measurement and Instrumentation
When checked with an ohm meter an open resistor reads

  infinite.
  low but not zero.
  zero.
  high but within tolerance.

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Measurement and Instrumentation
Direct method is used to measure

Length
Temperature
Pressure
Voltage

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