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Measurement and Instrumentation

Measurement and Instrumentation
Basically potential meter is a device for

Measuring a voltage
Comparing two voltages
Measuring a current
Comparing two currents

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Measurement and Instrumentation
What is the approximate input impedance of a CRO?

 0
 10 MΩ
 100 MΩ
 1 MΩ

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Measurement and Instrumentation
The given figure shows wein bridge connection for frequency measurement. C and R are variables and gang together. For balanced condition the expression for frequency is f = 1/2πCR when

 R1 = R2.
 R1 = R2/2.
 R1 = 3R2.
 R1 = 2R2.

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Measurement and Instrumentation
Which of the following instruments can be used to measure AC current only?

Permanent Magnet Type ammeter
Moving iron voltmeter
Induction type ammeter
Moving iron ammeter

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Measurement and Instrumentation
A voltage of 2.70 V is being measured by an analog indicating instrument having a scale range of 0 – 5.0 V. If the instrument reads 2.65 V, then absolute error in measurement is

 0.01V
 0.05V
 0.01V
 0.25V

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Measurement and Instrumentation
What is the unit of plane angle?

 Radian
 Candela
 Steradian
 Degree

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MORE MCQ ON Measurement and Instrumentation

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