Basic Electronics (3110016) MCQs

MCQs of Bipolar junction transistors and its biasing

Showing 41 to 50 out of 117 Questions
2 3 4 5 6 7
41.
The arrow in the symbol of a transistor indicates the direction of _________.
(a) Electron current in the emitter
(b) Electron current in the collector
(c) Hole current in the emitter
(d) Donor ion current
Answer:

Option (c)

42.
The leakage current in CE arrangement is _____ that in CB arrangement.
(a) More than
(b) Less than
(c) The same as
(d) None of the above
Answer:

Option (a)

43.
A heat sink is generally used with a transistor to _______.
(a) Increases the forward current
(b) Decreases the forward current
(c) Compensate for excessive doping
(d) Prevent excessive temperature rise
Answer:

Option (d)

44.
The most commonly used semiconductor in manufacture of a transistor is ________.
(a) Germanium
(b) Silicon
(c) Carbon
(d) None of the above
Answer:

Option (b)

45.
The collector-base junction in a transistor has _______.
(a) Forward bias at all times
(b) Reverse bias at all times
(c) Low resistance
(d) None of the above
Answer:

Option (b)

46.
Transistor biasing represents _______ conditions.
(a) AC
(b) DC
(c) Both AC and DC
(d) None of the above
Answer:

Option (b)

47.
Transistor biasing is done to keep _______ in the circuit.
(a) Proper direct current
(b) Proper alternating current
(c) The base current small
(d) Collector current small
Answer:

Option (a)

48.
Operating point represents ________.
(a) Value of IC and VCE when signal is applied
(b) The magnitude of signal
(c) Zero signal value of IC and VCE
(d) None of the above
Answer:

Option (c)

49.
If biasing is not done in an amplifier circuit, it results in _______.
(a) Decrease in base current
(b) Unfaithful amplification
(c) Excessive collector bias
(d) None of the above
Answer:

Option (b)

50.
Transistor biasing is generally provided by a ________.
(a) Biasing circuit
(b) Bias circuit
(c) Diode
(d) None of the above
Answer:

Option (a)

Showing 41 to 50 out of 117 Questions
2 3 4 5 6 7