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Measurement and Instrumentation

Measurement and Instrumentation
A potentiometer may be used for

Calibration of ammeter
Measurrment of resistance
All of the listed here
Measurement of current

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Measurement and Instrumentation
The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. If this meter is to have full deflection at 5A, what is the value of the shunt resistance to be used?

2 Ohms
1 Ohm
1/49.99 ohms
49.99 Ohms

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Measurement and Instrumentation
Piezoelectronic accelerometer

 Should be used for high frequencies above 100 Hz.
 Should use a monitoring source at low input impedance.
 Should be used for low frequency.
 Has a low natural frequency.

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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

 50 W.
 100 W.
 25 W.
  0 W.

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Measurement and Instrumentation
Commonly used instruments in power system measurement are

Rectifier
Electrostatic
Moving coil or iron
Induction

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Measurement and Instrumentation
Ampere is one of the

Supplementary units
Base units
Units used to measure charge
Derived units

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MORE MCQ ON Measurement and Instrumentation

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