Electronic Devices and Circuits Multiple Choice Questions on “Integrators and Differentiators”.
1. The other name for Miller Circuit is
A. Non-Inverting Integrator
B. Inverting Integrator
C. Non-Inverting Differentiator
D. Inverting Differentiator
Answer: B
Clarification: Miller Circuit is also called Inverting integrator.
2. The slope of the frequency response of an integrator is
A. Linear with negative slope
B. Linear with positive slope
C. Exponential increase
D. Exponential decrease
Answer: A
Clarification: The slope is linear and negative.
3. The integrating transfer function has the value of
A. jωCR
B. –jωCR
C. 1 / jωCR
D. -1 / jωCR
Answer: D
Clarification: Standard mathematical expression for the transfer function.
4. The expression for the integration frequency is
A. CR
B. 1/CR
C. R/C
D. C/R
Answer: B
Clarification: Standard mathematical expression for the integrator frequency.
5. Determine the expression for the transfer function for the circuit shown below.
A. (Rf/R)/(1+jωCRfC.
B. (Rf/R)/(1-jωCRfC.
C. – (Rf/R)/(1+jωCRfC.
D. – (Rf/R)/(1-jωCRfC.
Answer: C
Clarification: It is a standard expression.
6. The frequency transfer function of a differentiator is given by
A. jωCR
B. 1/jωCR
C. – jωCR
D. – 1/jωCR
Answer: A
Clarification: Standard mathematical expression for the transfer function of a differentiator.
7. The slope of the frequency response of a differentiator is
A. Linear with negative slope
B. Linear with positive slope
C. Exponential increase
D. Exponential decrease
Answer: B
Clarification: The slope is linear with a positive slope.
8. The phase in the integrator and differentiator circuit respectively are
A. +90 degrees and +90 degrees
B. -90 degrees and -90 degrees
C. -90 degrees and +90 degrees
D. +90 degrees and -90 degrees
Answer: D
Clarification: These are the characteristics of the integrators and differentiators circuits respectively.
9. Consider a symmetrical square wave of 20-V peak-to-peak, 0 average, and 2-ms period applied to a Miller integrator. Find the value of the time constant CR such that the triangular waveform at the output has a 20-V peak-to-peak amplitude.
A. 0.25ms
B. 0.50ms
C. 2.5ms
D. 5.0ms
Answer: B
Clarification: According to the question 1/CR = 2.
10. The expression for the differentiator time constant is
A. CR
B. 1/CR
C. R/C
D. C/R
Answer: A
Clarification: Standard mathematical expression for the time constant for the differentiators.