Bipolar Junction Transistor MCQs

Question 1

Thestability factor of a collector feedback bias circuit is that of .base resistor bias.

Accepted Answer

less than

Answer

the same as

Answer

more than

Answer

none of the above

Question 2

If the value of collector current IC increases, then value of VE

Accepted Answer

decreases

Answer

remains the same

Answer

increases

Answer

none of the above

Question 3

If the temperature increases, the value of VBE

Accepted Answer

is decreased

Answer

remains the same

Answer

is increased

Answer

none of the above

Question 4

The value of VBE

Accepted Answer

is almost independent of Ic

Answer

depends upon Ito moderate extent

Answer

is strongly dependent on Ic

Answer

none of the above

Question 5

When the temperature changes, the operating point is shifted due to

Accepted Answer

change in IcB0

Answer

change in Vcc

Answer

changein the values of circuit resistances

Answer

none of the above

Question 6

The value of stability factor for a base-resistor bias is

Accepted Answer

(f3 + 1)

Answer

RB(3+ 1)

Answer

(13 + 1) RB

Answer

1 -13

Question 7

In a practical biasing circuit, the value of RE is about

Accepted Answer

800fl

Answer

10 ka

Answer

1 Ma

Answer

100 Ica

Question 8

A silicon transistor is biased with base resistor method. If D = 100,BE = 0.7 V, zero signal collector current lc = 1 mA and 'cc =6 V, what is the value of base resistor RR?

Accepted Answer

530 lcil

Answer

105 Ica

Answer

315 Ica

Answer

none of the above

Question 9

In voltage divider bias, "cc = 25 V; R1 = 10 kfl; R2 = 2.2 k.G; Rc = 3.6 Id2 and RE = 1 kil. What is the emitter voltage?

Accepted Answer

3.8 V

Answer

6.7 V

Answer

5.3 V

Answer

4.9 V