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Measurement and Instrumentation

Measurement and Instrumentation
A moving iron ammeter may be compensated for frequency errors by

Shunt capacitance
A series inductance
Series resistance
A shunt resistance

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Measurement and Instrumentation
A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be

 0.50 A.
 0.70 A.
 0.25 A.
 0.67 A.

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Measurement and Instrumentation
Electrostatic instruments are normally used for

Low current measurements
High current measurements
High voltage measurements
Low voltage measurements

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

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Measurement and Instrumentation
How many time-base circuits does a dual face CRO can have?

 2.
 4.
 1.
 3.

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Measurement and Instrumentation
The range of a moving iron ac ammeter is extended by

A shunt
Changing number of turns of operating coil
None of the listed here
A multiplier

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MORE MCQ ON Measurement and Instrumentation

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