Bipolar Junction Transistor MCQs

Question 1

IC? ? _aIB+ 1

Accepted Answer

IcBo

Answer

IcE0

Answer

lc

Answer

IE

Question 2

'CEO = (__) ICB0

Accepted Answer

I +

Answer

13

Answer

1 + a

Answer

none of the above

Question 3

A transistor is connected in CB mode. If it is now connected in CE mode with same bias voltages, the values of IE, Is and I will

Accepted Answer

remain the same

Answer

increase

Answer

decrease

Answer

none of the above

Question 4

A heat sink is generally used with a transistor to

Accepted Answer

prevent excessive temperature rise

Answer

increase the forward current

Answer

decreases the forward current

Answer

compensate for excessive doping

Question 5

Operating point represents

Accepted Answer

zero signal values of lc and VcE

Answer

values of lc and VcE when signal is applied

Answer

the magnitude of signal

Answer

none of the above

Question 6

If biasing is not done in an amplifier circuit, it results in

Accepted Answer

unfaithful amplification

Answer

decrease in base current

Answer

excessive collector bias

Answer

none of the above

Question 7

For faithful amplification by a transistor circuit, the value of VBE should for a silicon transistor.

Accepted Answer

not fall below 0.7 V

Answer

be zero

Answer

0.01 V

Answer

be between 0 V and 0.1 V

Question 8

The circuit that provides the best stabilisation of operating point is

Accepted Answer

potential divider bias

Answer

base resistor bias

Answer

collector feedback bias

Answer

none of the above

Question 9

The zero signal lc is generally mA in the initial stages of a transistor amplifier.

Accepted Answer

1

Answer

4

Answer

3

Answer

more than 10