This set of Electronic Devices & Circuits Multiple Choice Questions & Answers (MCQs) focuses on “CE Amplifier with an Emitter Resistance”.
1. What is the use of coupling capacitors in CE amplifier?
a) blocks dc
b) pass ac
c) reduce distortion
d) pass ac & blocks dc
2. CE amplifier is mostly preferred in amplifier circuits because _________
a) it provides better voltage and current gain
b) of low output impedance
c) of high output impedance
d) it has better Q-point
3. For a common-emitter amplifier, the purpose of swamping is ________
a) to minimize gain
b) to reduce the effects of r’e
c) to maximize gain
d) no purpose
4. Which type of biasing is used in CE amplifier?
a) Fixed bias
b) Collector to base bias
c) Voltage divider bias
d) Emitter bias
5. The use of by-pass capacitor in CE amplifier is _________
a) to increase voltage gain
b) to increase negative feedback
c) for decreasing the frequency
d) to block dc
6. When the signal is applied, the ratio of change of collector current to the ratio of change of base current is called_________
a) dc current gain
b) ac current gain
c) base current amplification factor
d) emitter current amplification factor
7. What is the correct phase shift in CE amplifier?
a) 45 degrees
b) 180 degrees
c) 60 degrees
d) 120 degrees
8. In analog circuits, a coupling capacitor is used to connect two circuits such that only the AC signal from the first circuit can pass through to the next while DC is blocked.
9. In CE configuration, if the voltage drop across 6kΩ resistor connected in the collector circuit is 6V. Find the value of IB when β=50.
10. The___________ configuration is used frequently for impedance matching.
a) fixed bias
b) voltage- divider
c) emitter follower
d) collector feedback