Explore topic-wise MCQs in Electrical Measurements.

This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Measurements knowledge and support exam preparation. Choose a topic below to get started.

1.

Maximum sensitivity occurs when?

A. R3 ⁄ R4 = 1
B. R2 ⁄ R4 = 1
C. R1 ⁄ R2 = 1
D. R3 ⁄ R2 = 1
Answer» B. R2 ⁄ R4 = 1
Discussion
2.

Bridge sensitivity is defined as _________

A. \(S_B=\frac{\theta}{R}\)
B. \(S_B=\frac{\theta}{\Delta R}\)
C. \(S_B=\frac{1}{\frac{\Delta R}{R}}\)
D. \(S_B=\frac{\theta}{\frac{\Delta R}{R}}\)
Answer» E.
Discussion
3.

Sensitivity is expressed in _________

A. cm/A
B. m/mA
C. mm/µA
D. inch/nA
Answer» D. inch/nA
Discussion
4.

When the bridge is balanced, what is the current flowing through the galvanometer?

A. 0
B. depends on the ratio arms R1 and R2
C. varies by a factor of 2
D. depends on the type of null detector used
Answer» B. depends on the ratio arms R1 and R2
Discussion
5.

MAXIMUM_SENSITIVITY_OCCURS_WHEN?$

A. <sup>R<sub>3</sub></sup> ‚ÅÑ <sub>R<sub>4</sub></sub> = 1
B. <sup>R<sub>2</sub></sup> ‚ÅÑ <sub>R<sub>4</sub></sub> = 1
C. <sup>R<sub>1</sub></sup> ‚ÅÑ <sub>R<sub>2</sub></sub> = 1
D. <sup>R<sub>3</sub></sup> ‚ÅÑ <sub>R<sub>2</sub></sub> = 1
Answer» B. <sup>R<sub>2</sub></sup> ‚Äö√Ñ√∂‚àö√ñ‚àö√´ <sub>R<sub>4</sub></sub> = 1
Discussion
6.

Unit of voltage sensitivity is _________

A. volts per degrees
B. amps per ohms
C. degrees per volts
D. watts per amps
Answer» D. watts per amps
Discussion
7.

The voltage sensitivity of a galvanometer is given by _________

A. S<sub>v</sub> = <sup>e</sup>⁄<sub>θ</sub>
B. S<sub>v</sub> = <sup>θ</sup>⁄<sub>e</sub>
C. S<sub>v</sub> = <sup>1</sup>‚ÅÑ<sub>e</sub>
D. S<sub>v</sub> = <sup>1</sup>⁄<sub>θ</sub>
Answer» C. S<sub>v</sub> = <sup>1</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>e</sub>
Discussion
8.

What is the relation between the sensitivity and deflection for a galvanometer?

A. directly proportional
B. inversely proportional
C. independant of each other
D. depends on the type of galvanometer used
Answer» B. inversely proportional
Discussion
9.

Sensitivity is expressed in

A. cm/A
B. m/mA
C. mm/µA
D. inch/nA
Answer» D. inch/nA
Discussion
10.

Sensitivity is defined as _________

A. amount of voltage per unit current
B. amount of power per unit voltage
C. amount of resistance per unit voltage
D. amount of deflection per unit current
Answer» E.
Discussion
11.

Amount of deflection of the galvanometer depends on _________

A. resistance of the ratio arms
B. sensitivity
C. current flowing through the bridge
D. emf across the circuit
Answer» C. current flowing through the bridge
Discussion
12.

When bridge is balanced, what is the current flowing through the galvanometer?

A. 0
B. depends on the ratio arms R<sub>1</sub> and R<sub>2</sub>
C. varies by a factor of 2
D. depends on the type of null detector used
Answer» B. depends on the ratio arms R<sub>1</sub> and R<sub>2</sub>
Discussion