Electronic Devices Circuits Properties Neagtive Feedback Online Exam Quiz
Electronic Devices Circuits Properties Neagtive Feedback GK Quiz. Question and Answers related to Electronic Devices Circuits Properties Neagtive Feedback. MCQ (Multiple Choice Questions with answers about Electronic Devices Circuits Properties Neagtive Feedback
What would be the value of feedback voltage in a negative feedback amplifier with A=100; ? =0.03 and input signal voltage = 40mv?
Options
A : 0.03V
B : 0.06V
C : 0.09V
D : 0.12V
A system has a gain of 80 db without feedback, if the negative feedback is 1/50th. What is the closed loop gain of the system in db with the addition of the negative feedback?
Options
A : 34db
B : 40db
C : 30db
D : 42db
An ideal OP-Amp Is an ideal ______________
Options
A : Current controlled current source
B : Current controlled voltage source
C : Voltage controlled voltage source
D : Voltage controlled Current source
Negative feedback in amplifier _____________
Options
A : Improves the signal-to-noise ratio at input
B : Improves the signal-to-noise ratio at output
C : Does not improve the signal-to-noise ratio at I/O
D : Reduce Distortion
What happens to the non-linear distortion due to the initiation of the negative feedback?
Options
A : level of non- linear distortion increases
B : level of non- linear distortion decreases
C : level of non- linear distortion remains stable
D : level of non-linear distortion changes sinusoidal
Two non-inverting amplifiers, with gain =1 and gain=20 are made using identical operational amplifiers. As compared to the unity gain amplifier, the amplifier with gain=20 has ___________
Options
A : More input impedance
B : Less negative feedback
C : Less Bandwidth
D : Less input impedance
A feedback circuit usually employs which type of circuit?
Options
A : Resistive
B : Inductive
C : Capacitive
D : Shunt
Which of the following conditions is responsible to drive a low resistance load by the current amplifier circuit?
Options
A : Ro << RL
B : Ro >> RL
C : Rs >> Ri
D : Rs << Ri
Regarding the negative feedback amplifier, which of the following statements is wrong?
Options
A : Widens the separation between 3db frequency
B : Improves gain stability
C : Increases gain – bandwidth product
D : Reduces distortion
For an ideal voltage amplifier circuit, what should be the value of input resistance?
Options
A : Zero
B : Infinity
C : Unity
D : Unpredictable
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