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Measurement and Instrumentation

Measurement and Instrumentation
A dynamometer wattmeter can be used for

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

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Measurement and Instrumentation
A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is

 1 µNm.
  200 µNm.
 2 µNm.
 100 µNm.

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Measurement and Instrumentation
The resistance of a circuit is found by measuring current flowing and the power fed into the circuit. If the limiting errors in the measurement of power and current are ± 1.5% and ± 1.0% respectively, the limiting error in the measurement of resistance

 ± 1%
 ± 1.5%
 ± 3.5%
 ± 2.5%

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Measurement and Instrumentation
The expected value of the voltage across a resistor is 80 V, and the measured value is 79 V. What is the percentage error and relative accuracy of the measurement ?

 1.25% & 98.75%
 1.5% & 98.75%
 1.25% & 98.25%
 1.5% & 99%

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Measurement and Instrumentation
A sinusoidal signal waveform, when observed on an oscilloscope, has a peak to peak amplitude of 6 cm. If the vertical sensitivity setting is 5 v/cm, then rms value of the voltage will be

 11.1 V.
 15 V.
  10.6 V.
 12.6 V.

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Measurement and Instrumentation
PMMC Instrument can be used for

Both AC and DC
None of the listed here
AC work only
DC work only

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MORE MCQ ON Measurement and Instrumentation

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