GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 958 - 961 of 1076

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Question 958

Eigen Values and Eigen Vectors

Appeared in Year: 2017

Question

MCQ▾

Consider the matrix

It is given that A has only one real eigen value. Then the real eigen value of A is

Choices

Choice (4)Response

a.

b.

25

c.

0

d.

15

Question 959

Appeared in Year: 2017

Question

MCQ▾

Which one of the following options correctly describes the locations of the roots of the equation on the complex plane?

Choices

Choice (4)Response

a.

All four roots are on the imaginary axis

b.

Two RHP roots and two LHP roots

c.

Four left half plane (LHP) roots

d.

One right half plane (RHP) root, one LHP root and two roots on the imaginary axis.

Question 960

Appeared in Year: 2017

Question

MCQ▾

An bipolar junction transistor (BJT) is operating in the active region. If the reverse bias across the base-collector junction is increased. Then

Choices

Choice (4)Response

a.

The effective base width increases and common-emitter current gain increases.

b.

The effective base width increases and common emitter current gain decreases.

c.

The effective base width decreases and common-emitter current gain increases.

d.

The effective base width decreases and common-emitter current gain decreases.

Question 961

Appeared in Year: 2015

Question

Numeric Answer▾

A unity negative feedback system has an open-loop transfer function The gain K for the system to have a damping ratio of 0.25 is …

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