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Measurement and Instrumentation

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
Creep compensation
Friction compensation

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Measurement and Instrumentation
Consider the following statements : In a measuring instrument, 1. Linearity is more important than sensitivity. 2. High precision indicates high accuracy 3. Accuracy cannot be better than resolution. Of these statements

 1 and 2 are correct
 1, 2 and 3 are correct
 1 and 3 are correct
 2 and 3 are correct

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Measurement and Instrumentation
Systematic errors are

 observational errors.
 instrument errors.
All of these
 environmental errors.

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Measurement and Instrumentation
A voltmeter using thermocouple measures

 Average value.
 Peak value.
  rms value.
 Peak to peak value.

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Measurement and Instrumentation
______ instruments are most sensitive.

Moving iron
Dynamometer
Hot wire
Permanent magnet moving coil

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Measurement and Instrumentation
A first order instrument is characterized by

 Static sensitivity, damping coefficient and natural frequency of oscillations
 Static sensitivity and damping coefficient
 Time constant only
 Static sensitivity and time constant

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