Electromagnetics-Antennas [GATE (Graduate Aptitude Test in Engineering) Electronics & CE (EC)]: Questions 6 - 9 of 24

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Question 6

Appeared in Year: 2013

Question MCQ▾

VSWR (Voltage Standing Wave Ratio) is always (June)

Choices

Choice (4)Response

a.

1

b.

More than 1

c.

0.4

d.

Less than 1

Edit

Question 7

Appeared in Year: 2013

Question MCQ▾

Which antenna gets circularly polarized? (June)

Choices

Choice (4)Response

a.

Helical

b.

Yagi-Uda

c.

Parabolic

d.

Dipole

Edit

Question 8

Appeared in Year: 2013

Question MCQ▾

Consider the following statements regarding a semiconductor:

1. Acceptor level lies close to the valence band.

2. Donor level close to the valence band.

3. n-type semiconductor behaves as a conductor at zero Kelvin.

4. p-type semiconductor behaves as a insulator at zero Kelvin.

Choices

Choice (4)Response

a.

2 & 3 are correct.

b.

1 & 3 are correct.

c.

1 & 4 are correct.

d.

3 & 4 are correct.

Edit

Question 9

Appeared in Year: 2013

Question Match List-Ⅰ List-Ⅱ▾

Match the following lists: (September)

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

Parabolic reflector antenna

(i)

Directional transmission

(B)

Cassegrain antenna

(ii)

Radar

(C)

Yagi antenna

(iii)

Direction finding

(D)

Loop antenna

(iv)

Large B. W.

Choices

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

a.

  • (iv)
  • (i)
  • (iii)
  • (ii)

b.

  • (iii)
  • (iv)
  • (i)
  • (ii)

c.

  • (iv)
  • (i)
  • (ii)
  • (iii)

d.

  • (i)
  • (ii)
  • (iv)
  • (iii)

Edit