Dynamometer Type Wattmeter

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

1. Power is ___________
a) rate of doing work
b) rate of producing voltage
c) rate of generating current
d) rate of overcoming friction

2. In A.C. circuits, power consumed is ________
a) product of voltage and current
b) it depends on the p.f. of the circuit in addition to voltage and current
c) it depends on the supply voltage
d) it depends on the magnitude of the circuit current

3. In D.C. circuits, power is measured using ________
a) ohmmeter and galvanometer
b) ohmmeter and voltmeter
c) ammeter and voltmeter
d) ammeter and galvanometer

4. In A.C. circuits, power is measured using ________
a) voltmeter
b) ammeter
c) ohmmeter
d) wattmeter

5. A wattmeter consists of a current coil and a potential coil.
a) True
b) False

6. A dynamometer type wattmeter consists of ________
a) only potential coil
b) potential and current coils
c) only current coil
d) no coils

7. Controlling torque is provided by gold springs.
a) True
b) False

8. In a Dynamometer type wattmeter, the fixed coil is split into ________
a) 4
b) 3
c) 2
d) 1

9. When a current carrying coil is placed in the magnetic field?
a) no force is exerted
b) voltage is produced
c) power is generated
d) a force is exerted

10. When the moving coil in a Dynamometer type wattmeter deflects ________
a) pointer moves
b) pointer doesn’t move
c) current flows
d) voltage is generated

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