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Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Tests  >  Basic Electrical Technology  >  Test: Permeability of Free Space or Magnetic Constant - Electrical Engineering (EE) MCQ

Test: Permeability of Free Space or Magnetic Constant - Electrical Engineering (EE) MCQ


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10 Questions MCQ Test Basic Electrical Technology - Test: Permeability of Free Space or Magnetic Constant

Test: Permeability of Free Space or Magnetic Constant for Electrical Engineering (EE) 2024 is part of Basic Electrical Technology preparation. The Test: Permeability of Free Space or Magnetic Constant questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Permeability of Free Space or Magnetic Constant MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Permeability of Free Space or Magnetic Constant below.
Solutions of Test: Permeability of Free Space or Magnetic Constant questions in English are available as part of our Basic Electrical Technology for Electrical Engineering (EE) & Test: Permeability of Free Space or Magnetic Constant solutions in Hindi for Basic Electrical Technology course. Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free. Attempt Test: Permeability of Free Space or Magnetic Constant | 10 questions in 10 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study Basic Electrical Technology for Electrical Engineering (EE) Exam | Download free PDF with solutions
Test: Permeability of Free Space or Magnetic Constant - Question 1
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Permeability of free space is also known as _________

Detailed Solution for Test: Permeability of Free Space or Magnetic Constant - Question 1

The permeability of free space is also known as magnetic constant. The permittivity of free space is the electrostatic constant.

Test: Permeability of Free Space or Magnetic Constant - Question 2
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 A substance whose permeability is less than the permeability of free space is?

Detailed Solution for Test: Permeability of Free Space or Magnetic Constant - Question 2

A diamagnetic material creates a magnetic field opposing that of the external magnetic field and it repels the external magnetic field. Hence its permeability is less than that of free space.

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Test: Permeability of Free Space or Magnetic Constant - Question 3
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Which, among the following, have negative susceptibility?

Detailed Solution for Test: Permeability of Free Space or Magnetic Constant - Question 3

Magnetic susceptibility is the degree of magnetisation of a material in response to the external magnetic field. Diamagnetic substances repel the magnetic field and hence have negative susceptibility.

Test: Permeability of Free Space or Magnetic Constant - Question 4
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Which, among the following, have positive susceptibility?
Detailed Solution for Test: Permeability of Free Space or Magnetic Constant - Question 4

Magnetic susceptibility is the degree of magnetisation of a material in response to the external magnetic field. Paramagnetic substances weakly attract to the magnetic field and hence have positive susceptibility.

Test: Permeability of Free Space or Magnetic Constant - Question 5
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A substance whose permeability is more than the permeability of free space is?
Detailed Solution for Test: Permeability of Free Space or Magnetic Constant - Question 5

A paramagnetic material creates a magnetic field which is weakly attracted to that of the external magnetic field. Hence its permeability is more than that of free space.

Test: Permeability of Free Space or Magnetic Constant - Question 6
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The unit for permeability of free space is?
Detailed Solution for Test: Permeability of Free Space or Magnetic Constant - Question 6

Magnetic permeability is the constant of proportionality between the magnetic flux density and magnetic field strength of a given medium. Hence it has units henry/m.

Test: Permeability of Free Space or Magnetic Constant - Question 7
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Which, among the following, is a correct expression for ∫0.
Detailed Solution for Test: Permeability of Free Space or Magnetic Constant - Question 7

Magnetic permeability is the constant of proportionality between the magnetic flux density and magnetic field strength of a given medium. Hence ∫0=B/H.

Test: Permeability of Free Space or Magnetic Constant - Question 8
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Calculate the magnetic flux density if the magnetic field strength is 2A/m.
Detailed Solution for Test: Permeability of Free Space or Magnetic Constant - Question 8

We know that:
∫0=B/H
Substituting the value of H from the question, we get B= 8*pi/10-7T.

Test: Permeability of Free Space or Magnetic Constant - Question 9
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Calculate the magnetic field strength if the magnetic flux density is 4*piT.
Detailed Solution for Test: Permeability of Free Space or Magnetic Constant - Question 9

 We know that:
∫0=B/H
Substituting the value of B from the question, we get H = 107A/m.

Test: Permeability of Free Space or Magnetic Constant - Question 10
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 Calculate the magnetic flux density if the magnetic field strength is 3A/m.
Detailed Solution for Test: Permeability of Free Space or Magnetic Constant - Question 10

We know that:
∫0=B/H
Substituting the value of H from the question, we get B= 12*pi/10-7T.

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