Basic Electronics (3110016) MCQs

MCQs of Bipolar junction transistors and its biasing

Showing 11 to 20 out of 117 Questions
1 2 3 4 5 6
11.
At the base-emitter junction of a transistor, one finds ________.
(a) Reverse bias
(b) A wide depletion layer
(c) Low resistance
(d) None of the above
Answer:

Option (c)

12.
The input impedance of a transistor is _________.
(a) High
(b) Low
(c) Very high
(d) Almost zero
Answer:

Option (b)

13.
Most of the majority carriers from the emitter ________.
(a) Recombine in the base
(b) Recombine in the emitter
(c) Pass through the base region to the collector
(d) None of the above
Answer:

Option (c)

14.
The current IB is ________.
(a) Electron current
(b) Hole current
(c) Donor ion current
(d) Acceptor ion current
Answer:

Option (a)

15.
In a transistor, _______.
(a) IC = IE + IB
(b) IB = IC + IE
(c) IE = IC - IB
(d) IE = IC + IB
Answer:

Option (d)

16.
The value of α of a transistor is ________.
(a) More than 1
(b) Less than 1
(c) 1
(d) None of the above
Answer:

Option (b)

17.
IC = αIE + ___.
(a) IB
(b) ICEO
(c) ICB O
(d) β IB
Answer:

Option (c)

18.
The output impedance of a transistor is _______.
(a) High
(b) Zero
(c) Low
(d) Very low
Answer:

Option (a)

19.
In a transistor, IC = 100 mA and IE = 100.5 mA. The value of β is ______.
(a) 100
(b) 50
(c) About 1
(d) 200
Answer:

Option (d)

20.
In a transistor if β = 100 mA and collector current is 10 mA, then IE is _________.
(a) 100 mA
(b) 100.1 mA
(c) 110 mA
(d) None of the above
Answer:

Option (b)

Showing 11 to 20 out of 117 Questions
1 2 3 4 5 6