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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
The repeat accuracy of an instrument can be judged from its

Linearity error
Standard deviation of error
Dynamic error
Static error

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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.
 12.6 V.
  10.6 V.
 15 V.

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

 2 Nm.
 1 Nm.
 100 Nm.
  200 Nm.

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Measurement and Instrumentation
The two pressure coils of a single phase power factor meter have

None of these
The same dimension but different number of turns
The same number of turns but different dimensions
The same dimensions and the same number of turns

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MORE MCQ ON Measurement and Instrumentation

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