Basic Electronics (3110016) MCQs

MCQs of AC Analysis of BJT circuits and small signal amplifier

Showing 51 to 60 out of 120 Questions
3 4 5 6 7 8
51.
If the load resistance is open, the AC output voltage will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (b)

52.
If any capacitor is open, the AC output voltage will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (a)

53.
If input-coupling capacitor is open, the AC input voltage will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (d)

54.
If the bypass capacitor is open, the AC input voltage at the base will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (b)

55.
If output coupling capacitor is open, the AC input voltage will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (c)

56.
If the emitter resistance is open, the AC input voltage at the base will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (b)

57.
If the collector resistance is open, the AC input voltage at the base will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (a)

58.
If the emitter-bypass capacitor is shorted, the AC input voltage at the base will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (a)

59.
If the input impedance of the second stage decreases, the voltage gain of the first stage will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (a)

60.
If the BE diode of the second stage opens, the output voltage gain of the first stage will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (b)

Showing 51 to 60 out of 120 Questions
3 4 5 6 7 8