GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 277 - 281 of 1076

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Question 277

Appeared in Year: 2017 (UGC-NET)

Question

MCQ▾

The operation of JFET involves mainly:

(1) Flow of Minority carriers

(2) Flow of Majority carriers

(3) A very high input impedance

(4) Negative resistance

Which of the following is correct? (November paper 2)

Choices

Choice (4)Response

a.

(3) and (1)

b.

(3) and (4)

c.

(2) and (3)

d.

(1) and (2)

Question 278

Gain and Directivity

Appeared in Year: 2017 (UGC-NET)

Question

MCQ▾

Patch is a: (November paper 2)

Choices

Choice (4)Response

a.

Low gain wide band antenna

b.

High gain wide band antenna

c.

High gain narrow band antenna

d.

Low gain narrow band antenna

Question 279

Superheterodyne Receivers

Appeared in Year: 2017 (UGC-NET)

Question

MCQ▾

The ability of a receiver to discriminate against the interfering signals is known as: (November paper 2)

Choices

Choice (4)Response

a.

Distortion

b.

Selectivity

c.

Sensitivity

d.

Fidelity

Question 280

Gain and Directivity

Appeared in Year: 2017 (UGC-NET)

Question

MCQ▾

Helical antennas are often used for satellite tracking in VHF range because of: (November paper 2)

Choices

Choice (4)Response

a.

Ionospheric refraction

b.

Super - refraction

c.

Troposcatter

d.

Faraday effect

Question 281

Boolean Algebra, Minimization of Functions

Appeared in Year: 2017 (UGC-NET)

Question

MCQ▾

The Boolean SOP expression obtained from the truth table is:

Table of Boolean SOP Expression
InputsOutput
ABCX

(November paper 2)

Choices

Choice (4)Response

a.

b.

c.

d.

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