Here I discuss Top Electrical Measurements and Measuring Instruments MCQ (Multiple Choice Questions)
Q1. which Instruments measure the total quantity of electricity delivered in a particular time.
a) Absolute
b) Indicating
c) Recording
d) Integrating
Answer: Integrating
Q2. Which of the following are Integrating instruments?
a) Ammeters
b) Voltmeters
c) Wattmeters
d) Ampere-hour and Watt-hour meters
Answer: Ampere-hour and Watt-hour meters
Q3. Resistances can be measured with the help of
a) Wattmeters
b) Voltmeters
c) Ammeters
d) Ohmmeters and resistance bridges
Answer: Ohmmeters and resistance bridges
Q4. Which of the following essential features is possessed by indicating instrument?
a) Deflecting device
b) Controlling device
c) Damping device
d) All of the above
Answer: Controlling device
Q5. The household energy meter is
a) Absolute Instrument
b) Indicating Instrument
c) Recording Instrument
d) Integrating Instrument
Answer: Integrating Instrument
Q6. The pointer of the indicating instrument should be
a) Very light
b) Very heavy
c) Very thick and wide
d) Neither very light nor very heavy
Answer: Very light
Q7. A moving-coil permanent-magnet instrument can be used as ………. by using a low resistance shunt.
a) Ammeter
b) Voltmeter
c) Flux-meter
d) Ballistic galvanometer
Answer: Ammeter
Q8. Which of the following properties damping oil must possess?
a) Must be a good insulator and non-evaporating
b) Should not have corrosive action upon the metal of the vane
c) The viscosity of the oil should not change with the temperature
d) All of the above
Answer: All of the above
Q9. A moving-coil permanent-magnet instrument can be used as flux-meter
a) By using a low resistance shunt
b) By using a high series resistance
c) By eliminating the control springs
d) By making control springs of large moment of inertia
Answer: By eliminating the control springs
Q10. An induction meter can handle current upto
a) 10 A
b) 30 A
c) 60 A
d) 100 A
Answer: 100A
Q11. Induction type single phase energy meters measure electric energy in
a) KW
b) Wh
c) KWh
d) VAR
Answer: KWh
Q12. Which of the following meters are not used on DC circuits?
a) Mercury motor meters
b) Commutator motor meters
c) Induction meters
d) None of the above
Answer: Induction meters
Q13. A potentiometer may be used for
a) Measurement of resistance
b) Measurement of current
c) Calibration of ammeter and voltmeter
d) All of the above
Answer: All of the above
Q14. Which instrument is used for measuring the insulation resistance of an electric circuit relative to earth and one another?
a) Tangent galvanometer
b) Megger
c) Current transformer
d) None of the above
Answer: Megger
Q15. Which of the following meters are not used on DC circuits?
a) Mercury motor meters
b) Commutator motor meters
c) Induction meters
d) None of the above
Answer: Induction meters
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