Electronic Devices Circuits Voltage Amplifiers Online Exam Quiz
Electronic Devices Circuits Voltage Amplifiers GK Quiz. Question and Answers related to Electronic Devices Circuits Voltage Amplifiers. MCQ (Multiple Choice Questions with answers about Electronic Devices Circuits Voltage Amplifiers
A swamped amplifier uses________
Options
A : Base bias
B : Positive feedback
C : Negative feedback
D : A grounded emitter
The input impedance of the base increases when ______
Options
A : Beta increases
B : Supply voltage increases
C : Beta decreases
D : AC collector resistance increases.
We can increase _______ to reduce distortion of an amplified signal.
Options
A : Collector resistance
B : Emitter feedback resistance
C : Generator resistance
D : Load resistance
If any capacitor is open, the ac output voltage wills ____________
Options
A : Decrease
B : Increase
C : Remains the same
D : Equals zero
If the emitter bypass capacitor is open , the ac output voltage will ____________
Options
A : decrease
B : increase
C : remains the same
D : equals zero
If the emitter resistor is open, the ac input voltage will __________
Options
A : Decrease
B : Increase
C : Remains the same
D : Equals zero
In a swamped amplifier, the effects of the emitter diode become _________
Options
A : Important to the voltage gain
B : Critical to input impedance
C : Significant to analysis
D : Unimportant
The emitter of a swamped amplifier __________
Options
A : is grounded
B : has no dc voltage
C : has an ac voltage
D : has no ac voltage
A swamped amplifier has ________ input impedance as compared to CE stage amplifier.
Options
A : smaller
B : equal
C : larger
D : zero
What is the function of feedback resistor?
Options
A : To increase voltage gain
B : Reduce distortion
C : Decrease collector resistance
D : Decrease input impedance
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