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Measurement and Instrumentation

Measurement and Instrumentation
An electrodynamic meter can be used to measure

 DC voltage.
 DC current.
 AC volatge.
  both AC and DC voltage.

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Measurement and Instrumentation
What is the expression for acceleration?

 Change in velocity / time
 Force x displacement
 Mass x velocity
 Mass x acceleration

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Measurement and Instrumentation
If an inductance is connected in one arm of the bridge and resistance is the remaining three arms

The bridge cannot be balanced
The bridge can be balanced if the resistance have some specific values
None of the listed here
The bridge can always be balanced

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Measurement and Instrumentation
Which of the following meters has a linear scale?

Moving coil meter
Hot wore meter
Moving iron meter
Thermocouple meter

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Measurement and Instrumentation
A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is

 1.7 V.
 1 V.
 1.5 V.
 1.34 V.

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Measurement and Instrumentation
The meter constant of a single phase 240 V induction watthour meter is 400 revolutions per KWh. The speed of the meter disc for a current of 10 Amperes of 0.8 p.f lagging will be

 18.2 rpm.
  12.8 rpm.
 16.02 rpm.
 21.1 rpm.

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MORE MCQ ON Measurement and Instrumentation

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