Low Power Factor Wattmeter

Electrical Measurements

This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Low Power Factor Wattmeter”.

1. In an ordinary dynamometer, the deflecting torque is _________
a) small
b) medium
c) large
d) very large

2. Errors are introduced by ________
a) capacitance
b) inductance
c) resistance
d) impedance

3. Power coil has a low value of ________
a) inductance
b) capacitance
c) resistance
d) impedance

4. Resistance of pressure coil in a low power factor dynamometer type wattmeter is ________
a) once time
b) three times
c) hundred times
d) ten times

5. Low power factor wattmeters are designed to ________
a) have a low torque
b) have a high torque
c) have a medium torque
d) have no torque

6. Power loss in the current coil is ________
a) less
b) more
c) intermediate
d) very less

7. Pressure coil has no error.
a) True
b) False

8. Error in a pressure coil can be compensated.
a) True
b) False

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