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Measurement and Instrumentation

Measurement and Instrumentation
A dynamometer wattmeter can be used for

AC only
DC only
Both DC and AC
Any of the listed here

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Measurement and Instrumentation
Two voltmeters have the same range 0-400V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600V be applied across them, the readings are

300V each
360V and 240V
400V and 200V
One of the meters out of the range and other 100V

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Measurement and Instrumentation
The transfer instrument which is used for standardization of a polar type AC potentiometer is

 a moving coil instrument.
 an electrostatic instrument.
 a dynamometer instrument.
 a thermal instrument.

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Measurement and Instrumentation
A permanent magnet moving coil ammeter has a coil resistance of 99ohm and Full Scale DeflectionFSD. current of 0.1mA. Shunt resistance is 1 ohm. Current through the meter at 0.5 F.S.D is

0.05mA
0.007mA
0.1mA
0.023mA

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Measurement and Instrumentation
The resistance can be measured most accurately by

Megger
Bridge method
Voltmeter-ammeter method
Multimeter

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Measurement and Instrumentation
A voltmeter using thermocouple measures

  rms value.
 Peak value.
 Peak to peak value.
 Average value.

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MORE MCQ ON Measurement and Instrumentation

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