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Measurement and Instrumentation

Measurement and Instrumentation
The errors introduced by an instrument fall in which category ?

 Systematic errors
 Random errors
 Gross errors
 Environmental errors

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Measurement and Instrumentation
______ movement is most expensive.

Moving iron
D'Arsonval movement
Dynamometer
None of the listed here

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Measurement and Instrumentation
The total current I = I1 + I2 in a circuit is measured I1 = 150 ± 3A , I2 = 250 ± 4 A, where the limits of error are given as standard deviations. I is measured as

 (400 ± 1) A
 (400 ± 2.24) A
 (400 ±5) A
 (400 ± 3) A

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Measurement and Instrumentation
Induction type single phase energy meters measure electric energy in

VAR
kW
Wh
kWh

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Measurement and Instrumentation
In flux meter, the controlling torque is produced by

 not provided at all.
 crossed coil mechanism.
 spring.
 weight attached to the moving coil.

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Measurement and Instrumentation
A spring controlled indicating instrument has a deflection of 90deg for maximum current I. The corresponding deflection for a gravity controlled instrument is

0°
120°
30°
90°

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MORE MCQ ON Measurement and Instrumentation

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