# Electromagnetics [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 22 - 24 of 96

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## Question 22

Electromagnetics
Polarization, Phase and Group Velocity

Appeared in Year: 2013 (UGC-NET)

### Question

MCQ▾

When a plane wave propagating through free space, the direction of the field

1. ‘E’ is perpendicular to the direction of propagation.

2. ‘H’ is perpendicular to the direction of propagation.

3. ‘E’ is perpendicular to the direction of the field ‘H’ .

### Choices

Choice (4)Response

a.

1,2 & 3

b.

1 & 3

c.

1 & 2

d.

2 & 3

## Question 23

Electromagnetics
Equations

Appeared in Year: 2013 (UGC-NET)

### Question

Match List-Ⅰ List-Ⅱ▾

Match the following List -i with List-ii

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

Simplex

(i)

Bidirectional but not at same time

(B)

Full/Full Duplex (F/FDX)

(ii)

Bidirectional at same time but not between same two points

(C)

Half Duplex (HDX)

(iii)

Bidirectional and at same time between same two points

(D)

Full Duplex (FDX)

(iv)

Unidirectional

### Choices

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

a.

• (ii)
• (iv)
• (iii)
• (i)

b.

• (i)
• (iv)
• (ii)
• (iii)

c.

• (iii)
• (ii)
• (iv)
• (i)

d.

• (iv)
• (ii)
• (i)
• (iii)

## Question 24

Electromagnetics
Differential and Integral Forms and Their Interpretation

Appeared in Year: 2013 (UGC-NET)

### Question

MCQ▾

Consider the following frequency spectrum of the electro-magnetic wave:

2. Microwaves

3. Visible range

4. X-ray

Write down the frequency spectrum in ascending order

### Choices

Choice (4)Response

a.

1,2, 3,4

b.

4,3, 2,1

c.

1,3, 2,4

d.

3,2, 4,1

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