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Measurement and Instrumentation

Measurement and Instrumentation
Purely mechanical instrument cannot be used for dynamic measurements because they have

 high inertia.
 higher response time.
 large time constant.
All of these

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Measurement and Instrumentation
The internal resistance of an ammeter should be

Medium
Very small
High
Infinity

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

 Watt
 Newton
 Joule/sec
 Ampere

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Measurement and Instrumentation
Which of following voltmeters would you use for measuring voltage across 20KΩ resistance

 Voltmeter having sensitivity of 1 KW/V.
 None of above.
  Voltmeter having sensitivity of 10 KW/V.
 Voltmeter having a resistance of 5 ΩK.

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Measurement and Instrumentation
An analog ammeter is

 an absolute instrument.
  an indicating instrument.
 a recording instrument.
 a controlling instrument.

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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

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

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