Electromagnetics [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 34 - 38 of 96

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Question 34

Electromagnetics
Differential and Integral Forms and Their Interpretation

Appeared in Year: 2013 (UGC-NET)

Question

Match List-Ⅰ List-Ⅱ▾

Match the following lists: (September)

List-Ⅰ (Column I)List-Ⅱ (Column II)
(A)

Gamma rays

(i)

(B)

Microwaves

(ii)

(C)

Visible light

(iii)

(D)

Radio waves

(iv)

Choices

Choice (4)Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iii)
  • (iv)
  • (i)
  • (ii)

b.

  • (iii)
  • (iv)
  • (ii)
  • (i)

c.

  • (i)
  • (iii)
  • (iv)
  • (ii)

d.

  • (i)
  • (ii)
  • (iv)
  • (iii)

Question 35

Electromagnetics
Differential and Integral Forms and Their Interpretation

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Following are the EM waves: (September)

1. Red colour light

2. Blue colour light

3. Microwaves

4. X-rays

The correct sequence of decreasing order of wavelength is

Choices

Choice (4)Response

a.

2,4, 3,1

b.

3,1, 4,2

c.

1,3, 2,4

d.

3,1, 2,4

Question 36

Electromagnetics
Differential and Integral Forms and Their Interpretation

Appeared in Year: 2014 (UGC-NET)

Question

Match List-Ⅰ List-Ⅱ▾

Match the following lists: (June)

List-Ⅰ (Column-I)List-Ⅱ (Column-II)
(A)

(i)

(B)

(ii)

0

(C)

∇ ∙ (∇ × B)

(iii)

(D)

(iv)

Choices

Choice (4)Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iv)
  • (i)
  • (ii)
  • (iii)

b.

  • (ii)
  • (iv)
  • (iii)
  • (i)

c.

  • (iii)
  • (ii)
  • (i)
  • (iv)

d.

  • (iii)
  • (i)
  • (ii)
  • (iv)

Question 37

Electromagnetics
Radiation Pattern

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

When Q of an antenna increases, the bandwidth (September)

Choices

Choice (4)Response

a.

Decreases

b.

Stays constant equal to unity

c.

Increases

d.

Stays constant equal to zero

Question 38

Electromagnetics
Polarization, Phase and Group Velocity

Appeared in Year: 2019 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

Brewster angle is the angle of incidence at which there is no reflection.

Reason(Ꭱ)

For parallel polarization, Brewster angle is given by following expression

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false

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