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Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Test  >  Basic Electrical Technology  >  Test: Growth in an Inductive Circuit - Electrical Engineering (EE) MCQ

Growth in an Inductive Circuit - Free MCQ Practice Test with solutions,


MCQ Practice Test & Solutions: Test: Growth in an Inductive Circuit (10 Questions)

You can prepare effectively for Electrical Engineering (EE) Basic Electrical Technology with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Growth in an Inductive Circuit". These 10 questions have been designed by the experts with the latest curriculum of Electrical Engineering (EE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 10

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Test: Growth in an Inductive Circuit - Question 1
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In case of Inductive circuit, Frequency is ______________ to the current.

Detailed Solution: Question 1

Inductance is inversely proportional to current since, as the inductance increases, current decreases.

Test: Growth in an Inductive Circuit - Question 2
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In a pure inductive circuit, the power factor is?

Detailed Solution: Question 2

In a pure inductive circuit, current is lagging by 90 degrees from the voltage. The power factor is the cosine of the angle in between the voltage and the current. If the angle between the voltage and current is 90, then cos90=0. Hence, the power factor is zero.

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Test: Growth in an Inductive Circuit - Question 3
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What happens to the inductance when the current in the coil becomes double its original value?

Detailed Solution: Question 3

The formula for magnetic field strength in a coil is:
H=iN/l
The inductance is: directly proportional to magnetic field strength, hence as the current value dou-bles, the inductance also doubles.

Test: Growth in an Inductive Circuit - Question 4
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Among the following, which is the right formula for inductance?

Detailed Solution: Question 4

The average emf induced is proportional to the current per unit time, the constant of proportionality being L. Hence emf=LI/t. Making L the subject of the formula, we get: L=emf*t/I.

Test: Growth in an Inductive Circuit - Question 5
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Among the following, which is the right formula for growth in an inductive circuit?

Detailed Solution: Question 5

The correct formula for growth in an inductive circuit is VL=V(1-e-t /time constant). As the time increases, the current in the inductor increases hence the voltage also increases.

Test: Growth in an Inductive Circuit - Question 6
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The charging time constant of a circuit consisting of an inductor is the time taken for the voltage in the inductor to become __________% of the initial voltage.

Detailed Solution: Question 6

We know that: V=V0(1-e-t /time constant).
When time constant=t, we have: V=V0(1-e-1)= 0.63*V0.
Hence the time constant is the time taken for the charge in an inductive circuit to become 0.63 times its initial charge.

Test: Growth in an Inductive Circuit - Question 7
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 What is the time constant of an inductive circuit?

Detailed Solution: Question 7

The time constant in an inductive circuit is the time taken for the voltage across the inductor to become 63 percent of its initial value. It is given by: Time constant= L/R.

Test: Growth in an Inductive Circuit - Question 8
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Calculate the time constant of an inductive circuit having resistance 5 ohm and inductance 10H.

Detailed Solution: Question 8

We know that: Time constant= L/R
Substituting the values from the given question, we get time constant= 2s.

Test: Growth in an Inductive Circuit - Question 9
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 Calculate the resistance in an inductive circuit whose time constant is 2s-1 and the inductance is 10H.

Detailed Solution: Question 9

We know that: Time constant= L/R
Substituting the values from the given question, we get R=5ohm.

Test: Growth in an Inductive Circuit - Question 10
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Calculate the inductance in an inductive circuit whose time constant is 2s-1 and the resistance is 5 ohm.

Detailed Solution: Question 10

 We know that: Time constant= L/R
Substituting the values from the given question, we get L=10H.

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About this Electrical Engineering (EE) Practice Test

This test contains 10 MCQs on Growth in an Inductive Circuit with detailed solutions for each question. It is part of the Basic Electrical Technology course on EduRev, designed to align with the current Electrical Engineering (EE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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