Basic Electronics (3110016) MCQs

MCQs of AC Analysis of BJT circuits and small signal amplifier

Showing 41 to 50 out of 120 Questions
2 3 4 5 6 7
41.
Compared to a CE stage, a swamped amplifier has an input impedance that is
(a) Smaller
(b) Equal
(c) Larger
(d) Zero
Answer:

Option (c)

42.
To reduce the distortion of an amplifier signal, you can increase the
(a) Collector resistance
(b) Emitter feedback resistance
(c) Generator resistance
(d) Load resistance
Answer:

Option (b)

43.
The emitter of swamped amplifier
(a) Is grounded
(b) Has no DC voltage
(c) Has an AC voltage
(d) Has no AC voltage
Answer:

Option (c)

44.
A swamped amplifier uses
(a) Base bias
(b) Positive feedback
(c) Negative feedback
(d) A grounded emitter
Answer:

Option (c)

45.
In a swamped amplifier, the effects of the emitter diode become
(a) Important to voltage gain
(b) Critical to input impedance
(c) Significant to the analysis
(d) Unimportant
Answer:

Option (d)

46.
The feedback resistor
(a) Increases voltage gain
(b) Reduces distortion
(c) Decreases collector resistance
(d) Decreases input impedance
Answer:

Option (b)

47.
The AC collector resistance of the first stage includes
(a) Load resistance
(b) Input impedance of the first stage
(c) Emitter resistance of the first stage
(d) Input impedance of the second stage
Answer:

Option (d)

48.
If the emitter-bypass capacitor opens, the AC output voltage will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (a)

49.
If the emitter-bypass capacitor shorts, the base DC voltage will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (a)

50.
If the collector resistor is shorted, the AC output voltage will
(a) Decreases
(b) Increases
(c) Remains the same
(d) Equals zero
Answer:

Option (d)

Showing 41 to 50 out of 120 Questions
2 3 4 5 6 7