# Electrical Measurements Units - Electrical Engineering (MCQ) questions and answers

1)   The measurement range of digital voltmeter is

a. 1V to 1MV
b. 1V to 1kV
c. 1kV to 1MV
d. 100 kV to 100MV
 Answer  Explanation ANSWER: 1V to 1MV Explanation: No explanation is available for this question!

2)   Due to overdamping, the instrument will become

a. Slow
b. Lethargic
c. Fast
d. Both (a) and (b)
e. None of these
 Answer  Explanation ANSWER: Both (a) and (b) Explanation: No explanation is available for this question!

3)   In potentiometric type DVM, the adjustment of sliding contact is done by

a. A single phase servomotor
b. Two phase servomotor
c. Three phase servomotor
d. All of these
 Answer  Explanation ANSWER: Two phase servomotor Explanation: No explanation is available for this question!

4)   In deadweight gauge, weights are added on the top of piston until the piston reaches a datum level. The datum level is known as

a. Null point, where the downward force balances the fluid pressure
b. Lowest point of the container
c. Highest level of fluid in the container
d. None of these
 Answer  Explanation ANSWER: Null point, where the downward force balances the fluid pressure Explanation: No explanation is available for this question!

5)   Which part is called as heart of CRO?

a. CRT
b. Sweep generator
c. Trigger circuit
d. Amplifier
 Answer  Explanation ANSWER: CRT Explanation: No explanation is available for this question!

6)   If the two input waveforms of equal amplitude and 90 degree phase difference are applied to the CRO then the Lissajous patterns obtained will be

a. Straight line tilted at 45 degree with respect to X-axis
b. Circle
c. Ellipse
d. Vertical straight line
 Answer  Explanation ANSWER: Circle Explanation: No explanation is available for this question!

7)   Integrating instruments is the subdivision of the secondary instruments. The example for integrating instruments is

a. Ampere - hour meters
b. Watt - hour meters
c. Wattmeters
d. Ampere - hour and watt - hour meters
 Answer  Explanation ANSWER: Ampere - hour and watt - hour meters Explanation: No explanation is available for this question!

8)   Strain gauge is a

a. Active device and converts mechanical displacement into a change of resistance
b. Passive device and converts electrical displacement into a change of resistance
c. Passive device and converts mechanical displacement into a change of resistance
d. Active device and converts electrical displacement into a change of resistance
 Answer  Explanation ANSWER: Passive device and converts mechanical displacement into a change of resistance Explanation: No explanation is available for this question!

9)   In MKS system of units, the dimensions of E.M.F is given by

a. [M-1L-1T-2I-1]
b. [ML2T-3I-1]
c. [M2L1T-2I-1]
d. [M1L-1T-2I-1]
 Answer  Explanation ANSWER: [ML2T-3I-1] Explanation: No explanation is available for this question!

10)   The commonly used detectors in ac bridges is/are