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Measurement and Instrumentation

Measurement and Instrumentation
A transducer measures a range of 0 – 200 N force with a resolution of 0.15 percent of full scale. What is the smallest change which can be measured by this transducer ?

 6.66 N
 0.3 N
 3.33 N
 0.15 N

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Measurement and Instrumentation
A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be

 25 W.
 100 W.
 50 W.
  0 W.

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Measurement and Instrumentation
The range of a moving iron ac ammeter is extended by

A shunt
None of the listed here
Changing number of turns of operating coil
A multiplier

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

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

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Measurement and Instrumentation
To measure high frequency currents, we mostly use ______ ammeter.

Hot wire
Dynamometer
Moving iron
Thermocouple

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Measurement and Instrumentation
Two voltmeters have the same range 0-400V. The internal impedance are 30,000 Ohms and 20,000 Ohms. If they are connected in series and 600V be applied across them, the readings are

400V and 200V
One of the meters out of the range and other 100V
360V and 240V
300V each

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