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Measurement and Instrumentation

Measurement and Instrumentation
An analog ammeter is

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

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Measurement and Instrumentation
Which of the following meter is most suitable for measuring radio frequency currents?

 Moving - iron meter.
  Thermocouple meter.
 VTVM.
 Moving - coil meter.

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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 permanent magnet moving coil ammeter has a coil resistance of 99ohm and Full Scale DeflectionFSD. current of 0.1mA. Shunt resistance is 1 ohm. Current through the meter at 0.5 F.S.D is

0.007mA
0.05mA
0.1mA
0.023mA

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Measurement and Instrumentation
Induction wattmeter can measure

None of the listed here
Both AC and DC
Dc power only
Ac power only

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Measurement and Instrumentation
It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?

100W
200W
50W
150W

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