Measurement And Instrumentation MCQ Questions & Answers

31.
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

A. 0.007mA

B. 0.05mA

C. 0.023mA

D. 0.1mA

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32.
The chemical effect of current is used in

A. D.C. ammeter hour meter

B. D.C. ammeter

C. D.C. energy meter

D. None of the above

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33.
Some wire- wound resistors have bifilar winding. This type of winding is used to

A. Increase the thermal stability

B. Reduce the tolerance

C. Reduce the inductance of winding

D. Double the power rating of the resistor

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34.
The pressure coil of a wattmeter should be connected on the supply side of the current coil when

A. Load impedance is high

B. Load impedance is low

C. Supply voltage is low

D. None of the above

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35.
A resistor of 10 kΩ with 5% tolerance is connected in parallel with a 5 kΩ resistor of 10% tolerance. What is the tolerance limit for the parallel network?

A. 5%

B. 6.67%

C. 10%

D. 8.33%

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36.
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?

A. 100W

B. 150W

C. 50W

D. 200W

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37.
The EMF of Weston standard cell is measured using

A. Moving- iron meter

B. Moving-coil meter

C. Digital Volt meter

D. Potentiometer

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38.
A mulliammeter can be used as

A. Voltmeter and ammeter

B. Wattmeter

C. Ohmmeter

D. Frequency meter

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39.
Wagner earthing device is used to eliminate errors due to

A. Electrostatic coupling

B. Electromagnetic coupling

C. Both A and B

D. None of the above

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40.
The multiplier and the meter coil in a voltmeter are in

A. Series

B. Parallel

C. Series-parallel

D. None of the above

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Measurement And Instrumentation MCQ Questions & Answers | ECE

31. 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

Answer & Solution

32. The chemical effect of current is used in

Answer & Solution

33. Some wire- wound resistors have bifilar winding. This type of winding is used to

Answer & Solution

34. The pressure coil of a wattmeter should be connected on the supply side of the current coil when

Answer & Solution

35. A resistor of 10 kΩ with 5% tolerance is connected in parallel with a 5 kΩ resistor of 10% tolerance. What is the tolerance limit for the parallel network?

Answer & Solution

36. 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?

Answer & Solution

37. The EMF of Weston standard cell is measured using

Answer & Solution

38. A mulliammeter can be used as

Answer & Solution

39. Wagner earthing device is used to eliminate errors due to

Answer & Solution

40. The multiplier and the meter coil in a voltmeter are in

Answer & Solution

31.
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

32.
The chemical effect of current is used in

33.
Some wire- wound resistors have bifilar winding. This type of winding is used to

34.
The pressure coil of a wattmeter should be connected on the supply side of the current coil when

35.
A resistor of 10 kΩ with 5% tolerance is connected in parallel with a 5 kΩ resistor of 10% tolerance. What is the tolerance limit for the parallel network?

36.
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?

37.
The EMF of Weston standard cell is measured using

38.
A mulliammeter can be used as

39.
Wagner earthing device is used to eliminate errors due to

40.
The multiplier and the meter coil in a voltmeter are in