Measuring Instruments - Electrical Engineering (MCQ) questions and answers

1)   The springs should be

a. Free from mechanical stress
b. They should have a small resistance
c. Sufficient cross-sectional area
d. All of these
Answer  Explanation 

ANSWER: All of these

Explanation:
No explanation is available for this question!
2)   Among the following damping method, the most effective and efficient damping is

a. Air friction damping
b. Fluid friction damping
c. Eddy current damping
d. None of these
Answer  Explanation 

ANSWER: Eddy current damping

Explanation:
No explanation is available for this question!
3)   In dynamometer type wattmeter, at equilibrium

a. Tc > Td
b. Tc < Td
c. Tc = Td
d. None of these
Answer  Explanation 

ANSWER: Tc = Td

Explanation:
No explanation is available for this question!
4)   The moving system of induction type single - phase energy meter consists of

a. One pointer and two control spring
b. One pointer and one control spring
c. Two pointer and two control spring
d. No pointer and no control spring
Answer  Explanation 

ANSWER: No pointer and no control spring

Explanation:
No explanation is available for this question!
5)   Wattmeter is a / an

a. Indicating instrument
b. Integrating instrument
c. Recording instrument
d. All of these
Answer  Explanation 

ANSWER: Indicating instrument

Explanation:
No explanation is available for this question!
6)   The braking torque of induction type single - phase energy meter is

a. Directly proportional to the flux
b. Inversely proportional to the flux
c. Directly proportional to the square of the flux
d. Inversely proportional to the square of the flux
Answer  Explanation 

ANSWER: Directly proportional to the square of the flux

Explanation:
No explanation is available for this question!
7)   In order to bring the pointer to rest within a short time,

a. Gravity control is required
b. Damping control is required
c. Spring control is required
d. All of these
Answer  Explanation 

ANSWER: Damping control is required

Explanation:
No explanation is available for this question!
8)   In gravity control, at the zero position of the pointer the controlling torque is

a. Zero
b. One
c. 0.5
d. 7
Answer  Explanation 

ANSWER: Zero

Explanation:
No explanation is available for this question!
9)   The magnetic effect is used in

a. Moving iron attraction type instrument
b. Moving iron repulsion type instrument
c. Electrostatic ammeters and voltmeters
d. All of these
Answer  Explanation 

ANSWER: All of these

Explanation:
No explanation is available for this question!
10)   Tangent galvanometer can be used to measure

a. Voltage
b. Current
c. Power
d. All of these
Answer  Explanation 

ANSWER: Current

Explanation:
No explanation is available for this question!

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