Extension of Instrument Ranges MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Extension of Instrument Ranges, a fundamental topic in the field of Electrical Measurement and Instrumentation. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Extension of Instrument Ranges MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Extension of Instrument Ranges mcq questions that explore various aspects of Extension of Instrument Ranges problems. Each MCQ is crafted to challenge your understanding of Extension of Instrument Ranges principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electrical Measurement and Instrumentation tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Extension of Instrument Ranges MCQs are your pathway to success in mastering this essential Electrical Measurement and Instrumentation topic.

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Extension of Instrument Ranges MCQs | Page 4 of 12

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Q31.
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(rated)

Discuss
Answer: (a).Kₙ = \(\frac{I_{p(rated)}}{I_{s(rated)}}\)
Q32.
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(rated)

Discuss
Answer: (b).Kₙ = \(\frac{V_{p(rated)}}{V_{s(rated)}}\)
Q33.
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

Discuss
Answer: (c).ratio of transformation ratio to nominal ratio
Q34.
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

Discuss
Answer: (d).n = Nₛ ⁄ Nₚ
Q35.
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

Discuss
Answer: (a).n = Nₚ ⁄ Nₛ
Q36.
Errors are introduced in Current Transformers.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q37.
Ratio error is defined as ___________

a.

Ratio error = Kₙ⁄R

b.

Ratio error = (Kₙ – R)⁄R

c.

Ratio error = Kₙ – R

d.

Ratio error = 1⁄R

Discuss
Answer: (b).Ratio error = (Kₙ – R)⁄R
Q38.
Phase angle in a C.T. is defined as ____________

a.

\(\frac{180}{π} [\frac{I_m cosδ}{nI_s}]\) degrees

b.

\(\frac{180}{π} [\frac{I_c sinδ}{nI_s}]\) degrees

c.

\(\frac{180}{π} [\frac{I_m cosδ – I_c sinδ}{nI_s}]\) degrees

d.

\(\frac{180}{π} [\frac{I_m sinδ – I_c cosδ}{nI_s}]\) degrees

Discuss
Answer: (c).\(\frac{180}{π} [\frac{I_m cosδ – I_c sinδ}{nI_s}]\) degrees
Q39.
Phase angle error is given by ____________

a.

\(\frac{180}{π} [\frac{1}{nI_s}]\) degrees

b.

\(\frac{180}{π} [\frac{I_m}{I_s}]\) degrees

c.

\(\frac{180}{π} [\frac{I_m}{n}]\)degrees

d.

\(\frac{180}{π} [\frac{I_m}{nI_s}]\) degrees

Discuss
Answer: (d).\(\frac{180}{π} [\frac{I_m}{nI_s}]\) degrees
Q40.
Ratio error is due to _________

a.

iron loss

b.

C.T.

c.

magnetising component

d.

supply voltage

Discuss
Answer: (a).iron loss
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