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Measurement and Instrumentation

Measurement and Instrumentation
What is the unit of plane angle?

 Candela
 Radian
 Steradian
 Degree

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Measurement and Instrumentation
The dynamometer principle can be used for

 ammeter only.
 ammeter, voltmeter and wattmeter.
 voltmeter only.
 wattmeter only.

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Measurement and Instrumentation
A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read

 - 795 W.
  - 597 W.
 + 795 W.
 + 597 W.

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Measurement and Instrumentation
To measure the flux, devices used are based on

Photo-voltaic effect
Hall effect
Piezo-electric effect
Voltaic effect

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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 ± 1) A
 (400 ± 3) A

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Measurement and Instrumentation
Standardization of potentiometer is done in order that, they become

 accurate and precise.
 accurate and direct reading.
 accurate.
 precise.

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MORE MCQ ON Measurement and Instrumentation

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