GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 432 - 434 of 1076

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Question 432

Appeared in Year: 2018 (UGC-NET)

Question

Match List-Ⅰ List-Ⅱ▾

match the two lists and choose the correct answer from the code given below: (December)

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

TEM mode

(i)

Both electric and magnatic field present in the direction of propagation

(B)

Hybrid mode

(ii)

No magnetic field in the direction of propagation

(C)

TE mode

(iii)

No electric, no magnetic field in the direction of propagation

(D)

TM mode

(iv)

No electric field in the direction of propagation

Choices

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

a.

  • (iii)
  • (i)
  • (iv)
  • (ii)

b.

  • (ii)
  • (iii)
  • (iv)
  • (i)

c.

  • (i)
  • (iii)
  • (iv)
  • (ii)

d.

  • (iv)
  • (ii)
  • (i)
  • (iii)

Question 433

Arithmetic Circuits, Code Converters, Multiplexers, Decoders and PLAs

Appeared in Year: 2018 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

A multiplexer (MUX) is a device which selects one of the many inputs to a single output. (December)

Reason(Ꭱ)

A digital multiplexer is a sequential circuit that selects binary information from one of the many input lines and directs it to a single output line.

Choices

Choice (4)Response

a.

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

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

Ꭺ is false but Ꭱ is true

Question 434

Appeared in Year: 2016 (UGC-NET)

Question

MCQ▾

For transmission lines following statements are given:

(1) There is no cut-off frequency for TEM in coaxial cables.

(2) Coaxial cables are useful up to 100 MHz only.

(3) Waveguides do not support TEM waves.

(4) All the frequencies above cut-off flow through waveguides.

Out of the above statements following is true:

Choices

Choice (4)Response

a.

(2) , (3) and (4)

b.

(1) and (2)

c.

(1) , (3) and (4)

d.

(1) , (2) and (3)

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