Test: Magnetostatic Properties - Electrical Engineering (EE) MCQ

# Test: Magnetostatic Properties - Electrical Engineering (EE) MCQ

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## 10 Questions MCQ Test Electromagnetic Fields Theory (EMFT) - Test: Magnetostatic Properties

Test: Magnetostatic Properties for Electrical Engineering (EE) 2024 is part of Electromagnetic Fields Theory (EMFT) preparation. The Test: Magnetostatic Properties questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Magnetostatic Properties MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Magnetostatic Properties below.
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Test: Magnetostatic Properties - Question 1

### The magnetostatics highly relies on which property?

Detailed Solution for Test: Magnetostatic Properties - Question 1

Explanation: The magnetostatics highly relies on the inductance of the magnetic materials, which decides its behavior in the influence of magnetic field.

Test: Magnetostatic Properties - Question 2

### The inductance is the measure of

Detailed Solution for Test: Magnetostatic Properties - Question 2

Explanation: The inductance is a property of an electric conductor/coil which measures the amount of emf generated by passing current through the coil.

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Test: Magnetostatic Properties - Question 3

### Find the total flux in a coil of magnetic flux density 12 units and area 7 units.

Detailed Solution for Test: Magnetostatic Properties - Question 3

Explanation: The total flux in a coil is defined by φ = BA, where B = 12 and A = 0.07. On substituting these values, we get φ = 12 x 0.07 = 0.84 units.

Test: Magnetostatic Properties - Question 4

Find the energy of a coil of inductance 18mH and current passing through it 1.25A.(in 10-3order)

Detailed Solution for Test: Magnetostatic Properties - Question 4

Explanation: The magnetic energy possessed by a coil is given by E = 0.5 x LI2. Put L = 18 x 10-3 and I = 1.25, thus we get E = 0.5 x 18 x 10-3 x 1.252 = 14.06 x 10-3 units.

Test: Magnetostatic Properties - Question 5

Using Maxwell equation which of the following cannot be calculated directly?

Detailed Solution for Test: Magnetostatic Properties - Question 5

Explanation: The Maxwell equations can be used to compute E,H,D,B and J directly. It is not possible to find the magnetic vector potential A directly.

Test: Magnetostatic Properties - Question 6

Which of the following relation will hold good?

Detailed Solution for Test: Magnetostatic Properties - Question 6

Explanation: The magnetic flux density is the product the permeability and the magnetic field intensity. This statement is always true for any material (permeability).

Test: Magnetostatic Properties - Question 7

The permeability and permittivity of air or free space is unity. State true/false.

Detailed Solution for Test: Magnetostatic Properties - Question 7

Explanation: The permeability and permittivity of free space or air is always unity. This implies that the air is always ready to store electric or magnetic charges subjected to it.

Test: Magnetostatic Properties - Question 8

Choose the best relation.

Detailed Solution for Test: Magnetostatic Properties - Question 8

Explanation: For any magnetic field, the magnetic field intensity will be the negative gradient of the potential of the field. This is given by H = -Grad(V).

Test: Magnetostatic Properties - Question 9

Find the magnetic field when the magnetic vector potential is a unit vector.

Detailed Solution for Test: Magnetostatic Properties - Question 9

Explanation: We know that H = -Grad(V), where is a unit vector. The gradient of a constant/unit vector will be zero. Thus the magnetic field intensity will be zero.

Test: Magnetostatic Properties - Question 10

Find the force experienced by an electromagnetic wave in a conductor?

Detailed Solution for Test: Magnetostatic Properties - Question 10

Explanation: The electromagnetic wave experiences Lorentz force which is the combination of the electrostatic force and magneto static force. It is given by F = QE + Q(V X B).

## Electromagnetic Fields Theory (EMFT)

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## Electromagnetic Fields Theory (EMFT)

11 videos|45 docs|73 tests