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Measurement and Instrumentation

Measurement and Instrumentation
For measurement of high direct voltage, one would use _____ voltmeter.

PMMC
Hot wire
Moving iron
Electrostatic

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Measurement and Instrumentation
The household energymeter is

An integrating instrument
A recording instrument
None of the listed here
An indicating instrument

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Measurement and Instrumentation
______ instruments are most sensitive.

Permanent magnet moving coil
Dynamometer
Hot wire
Moving iron

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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
 1
 2
 4

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Measurement and Instrumentation
What is the expression for acceleration?

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

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Measurement and Instrumentation
The error of an instrument is normally given as a percentage of

Mean value
Measured value
Rms value
Full-scale value

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