Analog Circuits [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 220 - 223 of 249

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Question 220

Analog Circuits
Biasing, Bias Stability

Appeared in Year: 2015

Question

Numeric Answer▾

In the circuit shown in the figure, the BJT has a current gain of . For an emitter base voltage the emitter collector voltage is …

The Emitter Collector Voltage

Question 221

Analog Circuits
Criterion for Oscillation, Single-Transistor and Opamp Configurations

Appeared in Year: 2015

Question

MCQ▾

An LC tank circuit consists of an ideal capacitor C connected in parallel with a coil of inductance L having an internal resistance R. The resonant frequency of the tank circuit is

Choices

Choice (4)Response

a.

b.

c.

d.

Question 222

Analog Circuits
Function Generators, Wave-Shaping Circuits and 555 Timers

Appeared in Year: 2016

Question

Numeric Answer▾

In the astable multivibrator circuit shown in the figure, the frequency of oscillation at the output is …

The Astable Multivibrator Circuit Shown in the Figure

Question 223

Analog Circuits
Biasing, Bias Stability

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.

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