Linear Applications of Op-amp - Electronic Engineering (MCQ) questions & answers

1)   Due to presence of a capacitor in feedback path, the output of an integrator varies ______

a. Gradually
b. Instantaneously
c. Intermittently
d. All of the above
Answer  Explanation 

ANSWER: Gradually

Explanation:
No explanation is available for this question!


2)   In a buffer circuit, the voltage follower is placed _______ two networks in order to minimize the effect of loading on the first network.

a. Before
b. Between
c. After
d. None of the above
Answer  Explanation 

ANSWER: Between

Explanation:
No explanation is available for this question!


3)   As the frequency increases, input impedance of differentiator __________.

a. Increases
b. Decreases
c. Remains constant
d. None of the above
Answer  Explanation 

ANSWER: Decreases

Explanation:
No explanation is available for this question!


4)   In absence of any applied AC input signal, what would be the gain of an ideal integrator?

a. Zero
b. Unity
c. Infinity
d. Unpredictable
Answer  Explanation 

ANSWER: Infinity

Explanation:
No explanation is available for this question!


5)   In an inverting ideal integrator, which component exhibits the feedback path connection?

a. Resistor
b. Inductor
c. Capacitor
d. Diode
Answer  Explanation 

ANSWER: Capacitor

Explanation:
No explanation is available for this question!


6)   For a temperature controller circuit comprising instrumentation amplifier, which among the following is adopted as a temperature sensor?

a. Thermistor
b. Sensistor
c. Thyristor
d. Thermocouple
Answer  Explanation 

ANSWER: Thermistor

Explanation:
No explanation is available for this question!


7)   Which among the following is/are the requirement/s of an instrumentation amplifier?

a. High slew rate
b. High input resistance
c. High CMRR
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!


8)   For non-inverting adder, which theorem is applicable to determine the expression for output voltage?

a. Thevenin's
b. Norton's
c. Miller's
d. Superposition
Answer  Explanation 

ANSWER: Superposition

Explanation:
No explanation is available for this question!


9)   What is the feedback factor of voltage follower circuit?

a. Zero
b. Unity
c. Infinity
d. Between zero & one
Answer  Explanation 

ANSWER: Unity

Explanation:
No explanation is available for this question!


10)   Which among the following is a nonlinear application of op-amp?

a. V to I converter
b. Comparator
c. Precision rectifier
d. Instrumentation amplifier
Answer  Explanation 

ANSWER: Precision rectifier

Explanation:
No explanation is available for this question!