# 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?

### 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 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

### Choices

Choice (4)Response

a.

125 and 125

b.

250 and 250

c.

125 and 250

d.

250 and 125

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