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Measurement and Instrumentation

Measurement and Instrumentation
Dynamic errors are caused by

 environmental error
 human error
 instrument not responding fast
 observational error

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Measurement and Instrumentation
A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is

 1 V.
 1.7 V.
 1.34 V.
 1.5 V.

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Measurement and Instrumentation
The rectifier instrument is not free from

Frequency error
Wave shape error
Temperature error
All of the listed here

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Measurement and Instrumentation
Alternating current is measured by

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

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Measurement and Instrumentation
The calibration of a voltmeter can be carried out by using

 An ammeter.
 A function generator.
 A frequency meter.
  A potentiometer.

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Measurement and Instrumentation
In a wheatstone bridge, a change of 6 Ω in the unknown arm of bridge is required to produce a change in deflection of 2.4 mm of the galvanometer. The sensitivity is

 0.8 mm/Ω
 2.5 mm/Ω
 0.4 mm/Ω
 5.0 mm/Ω

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MORE MCQ ON Measurement and Instrumentation

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