GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 423 - 425 of 1076

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Question 423

PCM, DPCM, Digital Modulation Schemes

Appeared in Year: 2016 (UGC-NET)

Question

MCQ▾

Which of the following statements are true for Delta modulation?

(1) The Modulation is digital in nature.

(2) The modulation is analogue in nature.

(3) Better signal to Noise-ratio than PCM.

(4) Slope overload occurs in Delta Modulation.

Choices

Choice (4)Response

a.

(1) and (4) are correct

b.

(1) , (3) and (4) are correct

c.

(2) and (4) are correct

d.

(2) , (3) and (4) are correct

Question 424

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

Two machine codes 3EH and 32H are stored in memory locations and 2001H respectively. The first machine code (3EH) represents the opcode to load a data byte in the accumulator, and the second code (32H) represents the data byte to be loaded in the accumulator. The time required executing the Opcode Fetch and the memory Read Cycles and the entire instruction cycle is, (if clock frequency is 2 MHz) . (December)

Choices

Choice (4)Response

a.

b.

c.

d.

Question 425

Amplitude Modulation and Demodulation

Appeared in Year: 2018 (UGC-NET)

Question

MCQ▾

Following are the modulation schemes: (December)

i. AM

ii. FM

iii. DWDM

iv. CWDM

Arrange their adjacent channel band gap in ascending order. The correct sequence is:

Choices

Choice (4)Response

a.

(i) , (ii) , (iv) , (ii)

b.

(iv) , (i) , (ii) , (iii)

c.

(i) , (ii) , (iii) , (iv)

d.

(ii) , (i) , (iv) , (iii)

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