Electronic Devices Circuits Inverting Configuration Online Exam Quiz
Electronic Devices Circuits Inverting Configuration GK Quiz. Question and Answers related to Electronic Devices Circuits Inverting Configuration. MCQ (Multiple Choice Questions with answers about Electronic Devices Circuits Inverting Configuration
You are provided with an ideal op amp and three 10k? resistors. Using series and parallel resistor combinations, how many different inverting-amplifier circuit topologies are possible?
Options
A : 2
B : 3
C : 4
D : 5
The loop gain for an ideal operational amplifier with R1 = 10k? and R2(negative feedback) = 1M? is
Options
A : 20 db
B : 40 db
C : 60 db
D : 80 db
The non-inverting closed loop configuration features a high resistance. Therefore in many cases unity gain follower called buffer amplifier is often used to
Options
A : Connect a high resistance source to high resistance load
B : Connect low resistance source to low resistance load
C : Connect low resistance source to a high resistance source
D : Connect high resistance source to a low resistance load
The advantage of a weighted summer operational amplifier is
Options
A : It is capable of summing various input voltages together
B : Each input signal may be independently adjusted by adjusting the corresponding input resistance
C : If one needs both sign of a voltage signal then two operational amplifiers are needed
D : All of the mentioned
In an inverting op-amp circuit for which the gain is ?4 V/V and the total resistance used is 100 k?. Then the value of R1 and R2 (negative feedback)
Options
A : R1 = 20K? and R1 = 80K?
B : R1 = 80K? and R1 = 20K?
C : R1 = 40K? and R1 = 60K?
D : R1 = 50K? and R1 = 50K?
When does a resistance provide a negative feedback to an amplifier?
Options
A : Resistance is connected between the positive input terminal and the output terminal
B : Resistance is connected between the negative input terminal and the output terminal
C : Resistance is connected between the input terminals
D : Resistance is connected between the negative input terminal and ground
The effect of the inverting configuration is
Options
A : The output signal and the input signal are out of phase by 180o
B : The output signal and the input signal are in phase
C : The output phase is leading the input phase by 90o
D : The output phase is lagging behind the input phase by 90o
The negative feedback causes
Options
A : The voltage between the two input terminals to the very small, ideally zero
B : The voltage between the two input resistance very high, ideally infinite
C : Current flow through the positive input terminal and no current flows through the negative input terminal
D : Both a and c
For an ideal negative feedback configuration which of the following is true?
Options
A : There is a virtual open circuit between the input terminals
B : The closed loop gain for a negative feedback does not depend only on the external parameters
C : There is a virtual short circuit between the input terminals
D : There is a virtual ground at the negative input terminal
The following is a circuit of weighted summer capable of summing coefficients of both sign. The expressions for the output voltage v0 is
Options
A : v0 = v1 (R1/Ra ) (Rc/Rb ) + v1 (Ra/R2 ) (Rc/Rb ) – v1 (Rc/R3 ) – v1 (Rc/R4 )
B : v0 = – v1 (R1/Ra ) (Rc/Rb ) – v1 (Ra/R2 ) (Rc/Rb ) + v1 (Rc/R3 ) + v1 (Rc/R4 )
C : v0 = v1 (Ra/R1 ) (Rc/Rb ) + v1 (Ra/R2 ) (Rc/Rb ) – v1 (Rc/R3 ) – v1 (Rc/R4 )
D : v0 = – v1 (Ra/R1 ) (Rc/Rb ) – v1 (Ra/R2 ) (Rc/Rb ) + v1 (Rc/R3 ) + v1 (Rc/R4 )
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