GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 544 - 546 of 1076

Access detailed explanations (illustrated with images and videos) to 1076 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access, Unlimited Time, on Unlimited Devices!

View Sample Explanation or View Features.

Rs. 450.00 -OR-

How to register? Already Subscribed?

Question 544

Amplitude Modulation and Demodulation

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)

PCM

(i)

Envelope detection

(B)

Double sideband suppressed signal carrier

(ii)

Balance modulator

(C)

Amplitude modulation

(iii)

Pre-emphasis and de-emphasis

(D)

Frequency modulation

(iv)

Companding

Choices

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

a.

  • (ii)
  • (iii)
  • (iv)
  • (i)

b.

  • (i)
  • (iv)
  • (iii)
  • (ii)

c.

  • (ii)
  • (i)
  • (iii)
  • (iv)

d.

  • (iv)
  • (ii)
  • (i)
  • (iii)

Question 545

Circuits for Analog Communications

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

The Refractive Index of core in optical fibre should be

Choices

Choice (4)Response

a.

Greater than R. I. of cladding

b.

Equal to air

c.

Smaller than R. I. of cladding

d.

Equal to R. I. of cladding

Question 546

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

If an electric field is applied to an n-type semiconductor bar, the electrons and holes move in opposite directions due to their opposite charges. The net current is

1. due to both electrons and holes with electrons as majority carriers.

2. The sum of electron and hole currents.

3. The difference between electron and hole currents.

Which of these statements is correct?

Choices

Choice (4)Response

a.

2 & 3

b.

1 & 2

c.

1 & 3

d.

3 alone

Developed by: