# GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 419 - 422 of 1076

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## Question 419

Appeared in Year: 2018 (UGC-NET)

### Question

MCQ▾

An exact position of Fermi level in an n-type semiconductor is (December)

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 420

Appeared in Year: 2018 (UGC-NET)

### Question

MCQ▾

RAL is an example of (December)

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 421

Appeared in Year: 2018 (UGC-NET)

### Question

Assertion-Reason▾

### Assertion(Ꭺ)

A necessary and sufficient condition for a feedback system to be stable is that all the poles of the system transfer function have negative real parts. (December)

### Reason(Ꭱ)

To obtain a bounded response, the poles of the closed loop system must be in the left half portion of the splan.

### Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

Ꭺ is false but Ꭱ is true

## Question 422

Appeared in Year: 2018 (UGC-NET)

### Question

Assertion-Reason▾

### Assertion(Ꭺ)

A short linear conductor is often called a short dipole. (December)

### Reason(Ꭱ)

In a short dipole, the length is much lesser than the wavelength and the diameter of the dipole is also much lesser than the length.

### Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

Ꭺ is false but Ꭱ is true

d.

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

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