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Measurement and Instrumentation

Measurement and Instrumentation
Which one of the following units is a fundamental unit?

 Joule/sec
 Watt
 Newton
 Ampere

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Measurement and Instrumentation
An ammeter of range 0-25 A has a guaranteed accuracy of 1% of full-scale reading. The current measured by the ammeter is 5 A. The limiting error in the reading is

 6%
 5%
 3%
 4%

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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.
  - 597 W.
 - 795 W.

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Measurement and Instrumentation
The error of an instrument is normally given as a percentage of

Measured value
Full-scale value
Rms value
Mean value

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Measurement and Instrumentation
If the instrument is to have a wide range, the instrument should have

Logarithmic scale
Exponential scale
Square-law scale
Linear scale

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Measurement and Instrumentation
For measurement of inductance having high value, we should use

Hay's bridge
Maxwell's bridge
Maxwell wein bridge
Any of the listed here

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MORE MCQ ON Measurement and Instrumentation

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