Below Analog Electronics quiz are Multiple Choice Questions (MCQs) type Quiz. These Analog Electronics MCQ Questions helps you to refresh your Analog Electronics, you can see the correct option by clicking on it. .
1. The efficiency of a full wave rectifier using centre tapped transformer is twice that in full wave bridge rectifier.
True
False
2. The diode current equation is not applicable in ____________
Forward biased state
Reverse biased state
Unbiased state
It is applicable in all bias states
3. In a common emitter, unbypassed resister provides
voltage shunt feedback
current series feedback
negative voltage feedback
positive current feedback
4. In a half wave rectifier, the input sine wave is 250sin100 ᴨt Volts. The output ripple frequency of rectifier will be __________
100 Hz
200 Hz
50 Hz
25 Hz
5. A 10 V power supply would use which filter capacitor?
paper capacitor
electrolytic capacitor
mica capacitor
air capacitor
6. The cascade amplifier is a multistage configuration of
CC-CB
CE-CB
CB-CC
CE-CC
7. What will happen if doping of an intrinsic semiconductor with pentavalent impurity atom ?
Fermi level not change
Fermi level fall
Fermi level raises
All of the above
8. An RC oscillator uses
one RC combination
two RC combinations
at least three RC combinations
either (a) or (b)
9. Which power amplifier can deliver maximum load power?
Class A
Class AB
Class B
Class C
10. In a CE amplifier the input impedance is equal to the ratio of
ac base voltage to ac base current
ac base voltage to ac emitter current
ac emitter voltage to ac collector current
ac collector voltage to ac collector current
11. Which of the following oscillators is suitable for frequencies in the range of mega hertz?
RC phase shift
Wien bridge
Hartley
Both (a) and (c)
12. Thermal runaway is not possible in FET because as the temperature of FET increases
The mobility decreases
The transconductance increases
The drain current increases
None of the above
13. In a transistor leakage current mainly depends on
Doping of base
Size of emitter
Rating of transistor
Temperature
14. The early effect in a bipolar junction transistor is caused by
Fast turn-on
Fast turn-off
Large collector-base reverse bias
Large emitter-base forward bias
15. A change in the value of the emitter resistance Re in a differential amplifier
Affects the difference mode gain Ad
Affects the common mode gain Ac
Affects both Ad and Ac
Does not effect either Ad and Ac
16. The current gain of a BJT is
gm r0
gm / r0
gm rπ
gm /rπ
17. In a CB amplifier the maximum efficiency could be