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Measurement and Instrumentation

Measurement and Instrumentation
A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source V2 = 3sin4t, the voltmeters reads

 5 V.
 2 V.
 (2 + √3/2)V.
 0 V.

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Measurement and Instrumentation
The inductance of a certain moving iron ammeter is expressed as L = 2+5θ-θ2 µH. The control spring torque is 2 × 10-6 Nm/radian. Find the deflection in radians for a current of 2A.

 5
 2
 1
 4

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Measurement and Instrumentation
The adjustment of position of shading bands, in an energy meter is done to provide

Breaking torque
None of the listed here
Friction compensation
Creep compensation

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Measurement and Instrumentation
The internal resistance of an ammeter should be

High
Infinity
Medium
Very small

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Measurement and Instrumentation
Alternating current is measured by

Induction ammeter
Permanent magnet type ammeter
Moving iron repulsion type voltmeter
Electrostatic ammeter

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Measurement and Instrumentation
An current of is measured with a thermocouple, 5 A full scale meter. What is the meter reading?

 2+3√2 A.
  3 A.
 5 A.
 2 A.

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