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Measurement and Instrumentation

Measurement and Instrumentation
A dynamometer wattmeter can be used for

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

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Measurement and Instrumentation
The absolute measurement of resistance is done by

Ohm’s law method
Bridge Method
Lorenz method
Rayleigh method

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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.
  0 W.
 25 W.
 100 W.

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Measurement and Instrumentation
A bridge circuit is shown in the figure below. Which one of the sentence given below is most suitable for balancing the bridge?

 First adjust R2 and then adjust R4.
 First adjust R4 and then adjust R2.
 First adjust R4 and then adjust R1.
 First adjust R2 and then adjust R3.

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Measurement and Instrumentation
The electrical power to a megger is provided by

Battery
Ac generator
Permanent magnet dc generator
Any of the listed here

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Measurement and Instrumentation
The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is

One ohm according to SI units
One international ohm
Standard ohm
One ohm according to working standards

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MORE MCQ ON Measurement and Instrumentation

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