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 3 of 12

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Q21.
Instrument transformers give same readings irrespective of number of other instruments connected.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q22.
C.T. and P.T. are standardized at _________

a.

50 A and 220 V

b.

25 mA and 2.2 kV

c.

5 A and 110 V

d.

75 nA and 1.1 MV

Discuss
Answer: (c).5 A and 110 V
Q23.
A 5A ammeter can measure a current of upto 1000 A using a _________

a.

5/1000A C.T.

b.

1000A C.T.

c.

5A C.T.

d.

1000/5A C.T.

Discuss
Answer: (d).1000/5A C.T.
Q24.
A 110V voltmeter can measure a voltage of upto 110kV using a _________

a.

110000/110V P.T.

b.

110000V P.T.

c.

110V P.T.

d.

110/110000V P.T.

Discuss
Answer: (a).110000/110V P.T.
Q25.
How can the meter circuit be isolated from the power circuit?

a.

by grounding

b.

through electrical isolation

c.

by physical separation

d.

through mechanical isolation

Discuss
Answer: (b).through electrical isolation
Q26.
How are instrument transformers different from shunts and multipliers?

a.

they are all the same

b.

they have transformers

c.

readings are independent of component values

d.

they can be used for high voltages and currents

Discuss
Answer: (c).readings are independent of component values
Q27.
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

Discuss
Answer: (a).ratio of primary to secondary phasor
Q28.
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

Discuss
Answer: (b).R = \(\frac{I_p}{I_s}\)
Q29.
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

Discuss
Answer: (c).R = \(\frac{V_p}{V_s}\)
Q30.
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

Discuss
Answer: (d).ratio of rated primary value to secondary value
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