Explore topic-wise MCQs in Electrical Measurements.

This section includes 13 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.

For a P.T. the turns ratio is defined as the _________

A. n = Np ⁄ Ns
B. n = 1 ⁄ Np
C. n = Ns
D. n = Ns ⁄ Np
Answer» B. n = 1 ⁄ Np
Discussion
2.

For a C.T. the turns ratio is defined as the _________

A. n = Np ⁄ Ns
B. n = 1 ⁄ Np
C. n = Ns
D. n = Ns ⁄ Np
Answer» E.
Discussion
3.

For a P.T. the nominal ratio is given by which of the following relation?

A. Kn = \(\frac{V_{s(rated)}}{V_{p(rated)}}\)
B. Kn = \(\frac{V_{p(rated)}}{V_{s(rated)}}\)
C. Kn = \(\frac{1}{V_{s(rated)}}\) d) Kn = Vp(rate
D. }}{V_{p(rated)}}\) b) Kn = \(\frac{V_{p(rated)}}{V_{s(rated)}}\) c) Kn = \(\frac{1}{V_{s(rated)}}\) d) Kn = Vp(rated)
Answer» C. Kn = \(\frac{1}{V_{s(rated)}}\) d) Kn = Vp(rate
Discussion
4.

For a C.T. the nominal ratio is given by which of the following relation?

A. Kn = \(\frac{I_{p(rated)}}{I_{s(rated)}}\)
B. Kn = \(\frac{I_{s(rated)}}{I_{p(rated)}}\)
C. Kn = \(\frac{1}{I_{s(rated)}}\) d) Kn = Ip(rate
D. }}{I_{s(rated)}}\) b) Kn = \(\frac{I_{s(rated)}}{I_{p(rated)}}\) c) Kn = \(\frac{1}{I_{s(rated)}}\) d) Kn = Ip(rated)
Answer» B. Kn = \(\frac{I_{s(rated)}}{I_{p(rated)}}\)
Discussion
5.

For a P.T. the transformation ratio is given by which of the following relation?

A. R = \(\frac{V_s}{V_p}\)
B. R = \(\frac{1}{V_s}\)
C. R = \(\frac{V_p}{V_s}\)
D. R = Vp
Answer» D. R = Vp
Discussion
6.

For a C.T. the transformation ratio is given by which of the following relation?

A. R = \(\frac{I_s}{I_p}\)
B. R = \(\frac{I_p}{I_s}\)
C. R = \(\frac{1}{I_p}\)
D. R = Ip
Answer» C. R = \(\frac{1}{I_p}\)
Discussion
7.

Transformation ratio of an instrument is defined as ____________

A. ratio of primary to secondary phasor
B. ratio of secondary to primary phasor
C. reciprocal of the primary phasor
D. reciprocal of the secondary phasor
Answer» B. ratio of secondary to primary phasor
Discussion
8.

FOR_A_P.T._THE_TURNS_RATIO_IS_DEFINED_AS_THE__________?$

A. n = <sup>N<sub>p</sub></sup> ‚ÅÑ <sub>N<sub>s</sub></sub>
B. n = <sup>1</sup> ‚ÅÑ <sub>N<sub>p</sub></sub>
C. n = N<sub>s</sub>
D. n = <sup>N<sub>s</sub></sup> ‚ÅÑ <sub>N<sub>p</sub></sub>
Answer» B. n = <sup>1</sup> ‚Äö√Ñ√∂‚àö√ñ‚àö√´ <sub>N<sub>p</sub></sub>
Discussion
9.

For a C.T. the turns ratio is defined as the ________?

A. n = <sup>N<sub>p</sub></sup> ‚ÅÑ <sub>N<sub>s</sub></sub>
B. n = <sup>1</sup> ‚ÅÑ <sub>N<sub>p</sub></sub>
C. n = N<sub>s</sub>
D. n = <sup>N<sub>s</sub></sup> ‚ÅÑ <sub>N<sub>p</sub></sub>
Answer» E.
Discussion
10.

Ratio correction factor is defined as _________

A. reciprocal of nominal ratio
B. ratio of nominal ratio to transformation ratio
C. ratio of transformation ratio to nominal ratio
D. reciprocal of transformation ratio
Answer» D. reciprocal of transformation ratio
Discussion
11.

Nominal ratio of an instrument transformer is defined as the __________

A. reciprocal of the rated primary value
B. ratio of rated secondary value to primary value
C. reciprocal of the rated secondary value
D. ratio of rated primary value to secondary value
Answer» E.
Discussion
12.

For a C.T. the transformation ratio is given by the relation

A. R = <sup>I<sub>s</sub></sup> ‚ÅÑ <sub>I<sub>p</sub></sub>
B. R = <sup>I<sub>p</sub></sup> ‚ÅÑ <sub>I<sub>s</sub></sub>
C. R = <sup>1</sup> ‚ÅÑ <sub>I<sub>p</sub></sub>
D. R = I<sub>p</sub>
Answer» C. R = <sup>1</sup> ‚Äö√Ñ√∂‚àö√ñ‚àö√´ <sub>I<sub>p</sub></sub>
Discussion
13.

Transformation ratio of an instrument is defined as

A. ratio of primary to secondary phasor
B. ratio of secondary to primary phasor
C. reciprocal of the primary phasor
D. reciprocal of the secondary phasor
Answer» B. ratio of secondary to primary phasor
Discussion