Basic Electronics (3110016) MCQs

MCQs of Bipolar junction transistors and its biasing

Showing 101 to 110 out of 117 Questions
7 8 9 10 11 12
101.
If the base supply voltage increases the Q point moves
(a) Down
(b) Up
(c) Nowhere
(d) Off the load line
Answer:

Option (b)

102.
Suppose the base resistor is open. The Q point will be
(a) In the middle of the load line
(b) At the upper end of the load line
(c) At the lower end of the load line
(d) Off the load line
Answer:

Option (c)

103.
If the base supply voltage is disconnected, the collector-emitter voltage will equal
(a) 0 V
(b) 6 V
(c) 10.5 V
(d) Collector supply voltage
Answer:

Option (d)

104.
If the base resistor has zero resistance, the transistor will probably be
(a) Saturated
(b) In cutoff
(c) Destroyed
(d) None of the above
Answer:

Option (c)

105.
If the collector resistor opens in a base-biased circuit, the load line will become
(a) Horizontal
(b) Vertical
(c) Useless
(d) Flat
Answer:

Option (a)

106.
The collector current is 1.5 mA. If the current gain is 50, the base current is
(a) 3 µA
(b) 30 µA
(c) 150 µA
(d) 3 mA
Answer:

Option (b)

107.
The base current is 50 µA. if the current gain is 100, the collector current is closest in value to
(a) 50 µA
(b) 500 µA
(c) 2 mA
(d) 5 mA
Answer:

Option (d)

108.
When the Q point moves along the load line, VCE decreases when the collector current
(a) Decreases
(b) Stays the same
(c) Increases
(d) none of the above
Answer:

Option (c)

109.
When there is no base current in a transistor switch, the output voltage from the transistor is
(a) Low
(b) High
(c) Unchanged
(d) Unknown
Answer:

Option (b)

110.
A circuit with a fixed emitter current is called
(a) Base bias
(b) Emitter bias
(c) Transistor bias
(d) Two supply bias
Answer:

Option (b)

Showing 101 to 110 out of 117 Questions
7 8 9 10 11 12