GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 140 - 143 of 1076

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Question 140

Appeared in Year: 2013

Question

MCQ▾

In the circuit shown below what is the output voltage () if a silicon transistor Q and an ideal op-amp are used?

An Inverting Operational Amplifier with Ideal Characteristics

Choices

Choice (4)Response

a.

+ 15 V

b.

+ 0.7 V

c.

-15 V

d.

-0.7 V

Question 141

Multi-Stage, Differential, Feedback, Power and Operational

Appeared in Year: 2007

Question

MCQ▾

In a transconductance amplifier, it is desirable to have

Choices

Choice (4)Response

a.

A large input resistance and a large output resistance

b.

A small input resistance and a large output resistance

c.

A large input resistance and a small output resistance

d.

A small input resistance and a small output resistance

Question 142

Multi-Stage, Differential, Feedback, Power and Operational

Appeared in Year: 2012

Question

MCQ▾

The current through the base of silicon transistor is mA At 300K, the in the small signal model of the transistor is

The Small Signal Model of the Transistor with Input and Output

The current in the circuit is

Choices

Choice (4)Response

a.

10 mA

b.

20 mA

c.

25 mA

d.

15 mA

Question 143

Clipping, Clamping and Rectifiers

Appeared in Year: 2013

Question

MCQ▾

In the circuit shown below, the knee current of the ideal Zener diode is 10 mA. To maintain 5 V across , the minimum value of in and the minimum power rating of the Zener diode in mW, respectively, are

A Circuit Having Zener Diode & Resisters with Voltage Source

Choices

Choice (4)Response

a.

125 and 125

b.

250 and 250

c.

125 and 250

d.

250 and 125

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