Electrical Online Test 6

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Attempt Free Electrical Online Test 6 Here. Read The Important Electrical MCQ From Below.

1) Induction watt meter can be used to measure

a. Ac power
b. Dc power
c. Ac & dc
d. None of above
Ans. a. Ac power

2) A moving iron ammeter can measure

a. Ac current
b. Dc current
c. Eddy current
d. Ac& dc current
Ans. d. Ac& dc current

3) The displacement can be measured by

a. RTD
b. thermistor
c. megger
d. LVDT
Ans. d. LVDT

4) The o/p of a schmitt trigger is

a. sinusoidal wave
b. parabolic
c. direct current
d. Square wave
Ans. d. Square wave

Electrical Online Test 6

5) Electro dynamic instrument can measure

a. Ac current
b. Dc current
c. Ac & dc power
d. All of above
Ans. a. Ac current

6) Ohm meter is

a. A meter to record ohm
b. used to measure resistance
c. Combination of ohm & meter
d. an indicating instrument
Ans. b. used to measure resistance

7) Measuring range of a voltmeter can be extended by

a. high shunt resistance
b. high series resistance
c. low shunt resistance
d. low series resistance
Ans. b. high series resistance

8) DC potentiometer in an instrument to measure

a. unknown emf
b. large voltages
c. Large power
d. direct current
Ans. a. unknown emf

9) Frequency can be measured by

a. Maxwell bridge
b. scheming bridge
c. Campbell bridge
d. wens bridge
Ans. d. wens bridge

Electrical Online Test 6

10) In electronic voltmeters the measuring device usually a

a. moving coil
b. dynamometer
c. hot wire
d. MOVING IRON
Ans. a. moving coil

11) The parallax & approximation errors are nil in

a. DVM
b. AVM
c. AM
d. Non of above
Ans. a. DVM

12) Volt meter resistivity is defined as

a. Reciprocal of full scale deflection
b. volts/ohm
c. Ohm/volt
d. A&c
Ans. d. A&c

13) .How many coils are required in the megger

a. One
b. Two
c. Four
d. Five
Ans. b. Two

14) Hall effect transducers are used for measuring

a. magnetic field
b. current
c. pressure
d. Electric field
Ans. a. magnetic field

Electrical Online Test 6

15) Volt meter sensitivity is defined as

a. Reciprocal of full scale deflection
b. volts/ohm
c. Ohm/volt
d. A&c
Ans. c. Ohm/volt

16) The moving coil instrument cannot be used for measurement of a.c. voltage or current

a. True
b. False
Ans. a. True

17) .In measuring system which of the following static characteristics are desirable

a. accuracy
b. sensitivity
c. reproducibility
d. None
Ans. b. sensitivity

18) Moving iron instruments can be used in both a.c. and d.c. ckts

a. True
b. False
Ans. a. True

Electrical Online Test 6

19) Insulation resistance is measured by?

a. Ohm meter
b. megger
c. strain guage
d. watt meter
Ans. b. megger

20) .the operating torque is high in case of moving ?…… Instruments

a. coil
b. Iron
c. Cor
d. None
Ans. b. Iron

21) Integrating meters are used to measure

a. Voltage
b. Current
c. Phage
d. Energy
Ans. d. Energy

Electrical Online Test 6

22) A moving coil ammeter can measure

a. ac current
b. dc current
c. Eddy current
d. Stray current
Ans. b. dc current

23) Electrostatic instruments are primarily used as

a. ammeters
b. volt meters
c. watt meters
d. Ohm meters
Ans. b. volt meters

24) An ohm meter is basically

a. Ammeter
b. volt meter
c. multimeter
d. none
Ans. c. multimeter

25) .A CRO can be used to measure

a. Voltage
b. Waveform
c. Frequency
d. All above
Ans. d. All above

Electrical Online Test 6