Distortion in Amplifier - 2 Online Exam Quiz
Distortion in Amplifier - 2 GK Quiz. Question and Answers related to Distortion in Amplifier - 2. MCQ (Multiple Choice Questions with answers about Distortion in Amplifier - 2
Consider a practical op-amp where the power supply is VCC = +12V and VEE = -12V. The open loop gain is 106 and open loop bandwidth is 5Hz. What is the maximum positive input before which the output is saturated?
Options
A : 12 mV
B : 0.012 mV
C : 24 mV
D : 12V
Consider the circuit shown. The input VI = 10sin2?106t. Calculate the duty cycle of the output.^
Options
A : 0.43
B : 0.065
C : 0.36
D : 0.5
Given an op-amp who's gain is unknown but the output is saturated, which of the following is not possible?
Options
A : No feedback is being applied
B : Negative feedback is applied while input is more than ?VSat/AOL
C : Positive feedback is applied
D : Negative feedback is applied while the input is more than VSat/AOL
Given that the PSRR of an op-amp is 120dB. The supply lies between 12V to 15V. Calculate the change in the input offset voltage.
Options
A : 3?V
B : ?3?V
C : ?3?10-12V
D : -3V
If D1, D2, D3, D4 are the distortion produced by second, third, fourth, fifth respectively (others are insignificant). Then total harmonic distortion is __
Options
A : ?(D12+D22+D32+D42)
B : ?(D12+D32)
C : ?(D22+D42)
D : ?(D12+D22)
In three-point method the harmonics which are considered for calculating distortion is __
Options
A : First harmonics only
B : First and Second harmonics only
C : First, Second and Third harmonics only
D : Second and Third harmonics only
Power delivered to load calculated by five-point method can be equal to __^ (Pac is power delivered to load without distortion and D is the RMS of all Harmonic distortion)
Options
A : Pac (1-D2)
B : Pac/D2
C : Pac (1+D2)
D : Pac D2
Power delivered to load is ___ with an increase in harmonic distortion.
Options
A : Increases
B : Decreases
C : Constant
D : Cannot predict
Second order harmonic distortion is __
Options
A : Amount of second harmonics and first harmonics in signal
B : Amount of second harmonics and fourth harmonics in signal
C : Amount of second harmonics present in signal
D : RMS value of all even harmonics in signal
The current flowing into one input of the op-amp is 12nA and it is 10 nA in the other. Find the input offset current.
Options
A : 1nA
B : 2nA
C : -2nA
D : 11nA
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