ADE (UNIT-IV) MCQs

Multiple Choice Questions 26 Pages

Savitribai Phule Pune University

electrical engineering

GUC

Contributed by

Gowri Umesh Chatterjee

SKN SITS, LONAVALA
DEPARTMENT OF ELECTRICAL ENGINEERING
S.E. Electrical Subject:- ADE (UNIT-IV)

((MARKS))
(1/2/3...)
1
((QUESTION))
The opamp can amplify
((OPTION_A))
AC signals only.
((OPTION_B))
DC signals only.
((OPTION_C))
both AC and DC signals.
((OPTION_D))
neither AC not DC signals.
((CORRECT_C
HOICE))
(A/B/C/D)
C
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
1
((QUESTION))
The input signal for an instrumentation amplifier usually comes from
((OPTION_A))
an inverting amplifier.
((OPTION_B))
a resistor.
((OPTION_C))
a differential amplifier.
((OPTION_D))
a Wheatstone bridge.
((CORRECT_C
HOICE))
(A/B/C/D)
D
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))
In a differential amplifier, the CMRR is limited mostly by the
Page 1
SKN SITS, LONAVALA
DEPARTMENT OF ELECTRICAL ENGINEERING
S.E. Electrical Subject:- ADE (UNIT-IV)

((OPTION_A))
CMRR of the opamp.
((OPTION_B))
gain - bandwidth product.
((OPTION_C))
supply voltages
((OPTION_D))
tolerance of the resistors
((CORRECT_C
HOICE))
(A/B/C/D)

D
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
1
((QUESTION))
An instrumentation amplifier has a high
((OPTION_A))
output impedance.
((OPTION_B))
power gain.
((OPTION_C))
CMMR.
((OPTION_D))
supply voltage.
((CORRECT_C
HOICE))
(A/B/C/D)
C
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))
When the two input terminals of a differential amplifier are grounded
((OPTION_A))
the base currents are equal.
Page 2
SKN SITS, LONAVALA
DEPARTMENT OF ELECTRICAL ENGINEERING
S.E. Electrical Subject:- ADE (UNIT-IV)

((OPTION_B))
the collector currents are equal
((OPTION_C))
an output error voltage usually exists.
((OPTION_D))
the ac output voltage is zero.
((CORRECT_C
HOICE))
(A/B/C/D)
C
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))
The voltage follower has a
((OPTION_A))
The voltage follower has a
((OPTION_B))
small open - loop voltage gain.
((OPTION_C))
closed - loop bandwidth of zero.
((OPTION_D))
large closed - loop output impedance.
((CORRECT_C
HOICE))
(A/B/C/D)
A
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))

Calculate the output voltage for this circuit when V
1
= 2.5 V and V
2
=
2.25 V
Page 3
SKN SITS, LONAVALA
DEPARTMENT OF ELECTRICAL ENGINEERING
S.E. Electrical Subject:- ADE (UNIT-IV)

((OPTION_A))
–5.25 V
((OPTION_B))
2.5 V
((OPTION_C))
2.25 V
((OPTION_D))
5.25 V
((CORRECT_C
HOICE))
(A/B/C/D)
D
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))

How many op-amps are required to implement this equation?

((OPTION_A))
2
((OPTION_B))
3
((OPTION_C))
4
((OPTION_D))
1
Page 4
SKN SITS, LONAVALA
DEPARTMENT OF ELECTRICAL ENGINEERING
S.E. Electrical Subject:- ADE (UNIT-IV)

((CORRECT_C
HOICE))
(A/B/C/D)
D
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)

Calculate the cutoff frequencies of a bandpass filter with R
1
= R
2
= 5 k
and C
1
= C
2
= 0.1 F.

((QUESTION))
f
OL
= 318.3 Hz, f
OH
= 318.3 Hz
((OPTION_A))
f
OL
= 636.6 Hz, f
OH
= 636.6 Hz
((OPTION_B))
f
OL
= 318.3 Hz, f
OH
= 636.6 Hz
((OPTION_C))
f
OL
= 636.6 Hz, f
OH
= 318.3 Hz
((OPTION_D))
A
((CORRECT_C
HOICE))
(A/B/C/D)

((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))

This circuit is an example of a(n)______
Page 5
SKN SITS, LONAVALA
DEPARTMENT OF ELECTRICAL ENGINEERING
S.E. Electrical Subject:- ADE (UNIT-IV)

((OPTION_A))
dc voltmeter
((OPTION_B))
display driver
((OPTION_C))
instrumentation amplifier
((OPTION_D))
None of the above
((CORRECT_C
HOICE))
(A/B/C/D)
C

((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))

Calculate the cutoff frequency of a first-order low-pass filter for R
1
= 2.5 k
and C
1
= 0.05 F.

((OPTION_A))
1.273 kHz
((OPTION_B))
12.73 kHz
((OPTION_C))
127.3 kHz
((OPTION_D))
127.30 Hz
Page 6
SKN SITS, LONAVALA
DEPARTMENT OF ELECTRICAL ENGINEERING
S.E. Electrical Subject:- ADE (UNIT-IV)

((CORRECT_C
HOICE))
(A/B/C/D)
A
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))

An example of an instrumentation circuit is a(n) _______

((OPTION_A))
dc voltmeter
((OPTION_B))
display driver
((OPTION_C))
ac voltmeter
((OPTION_D))
All of the above
((CORRECT_C
HOICE))
(A/B/C/D)
D
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))

How many op-amps are required to implement this equation?

((OPTION_A))
2
((OPTION_B))
3
((OPTION_C))
4
Page 7
SKN SITS, LONAVALA
DEPARTMENT OF ELECTRICAL ENGINEERING
S.E. Electrical Subject:- ADE (UNIT-IV)

((OPTION_D))
1
((CORRECT_C
HOICE))
(A/B/C/D)
D
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
1
((QUESTION))
Assume that the op-amp of the fig. is ideal. If Vi is a triangular wave ,then
V0 will be

((OPTION_A))
square wave
((OPTION_B))
Triangular Wave
((OPTION_C))
Parabolic Wave
((OPTION_D))
Sine Wave
((CORRECT_C
HOICE))
(A/B/C/D)
C
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))
The center frequency of a band-pass filter is always equal to the
Page 8
SKN SITS, LONAVALA
DEPARTMENT OF ELECTRICAL ENGINEERING
S.E. Electrical Subject:- ADE (UNIT-IV)

((OPTION_A))
bandwidth
((OPTION_B))
bandwidth divided by Q
((OPTION_C))
–3 dB frequency
((OPTION_D))
geometric average of the critical frequencies
((CORRECT_C
HOICE))
(A/B/C/D)
D
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
1
((QUESTION))
A triangular-wave oscillator can consist of an op-amp comparator,
followed by a(n)
((OPTION_A))
amplifier
((OPTION_B))
differentiator
((OPTION_C))
integrator
((OPTION_D))
multivibrator
((CORRECT_C
HOICE))
(A/B/C/D)
C
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
2
((QUESTION))
The ramp voltage at the output of an op-amp integrator

Page 9
SKN SITS, LONAVALA
DEPARTMENT OF ELECTRICAL ENGINEERING
S.E. Electrical Subject:- ADE (UNIT-IV)

((OPTION_A))
increases or decreases at a linear rate
((OPTION_B))
increases or decreases exponentially
((OPTION_C))
is always increasing and never decreasing
((OPTION_D))
is constant
((CORRECT_C
HOICE))
(A/B/C/D)
A
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
1
((QUESTION))
A comparator is an example of a(n)

((OPTION_A))
linear circuit
((OPTION_B))
current source
((OPTION_C))
active filter
((OPTION_D))
nonlinear circuit
((CORRECT_C
HOICE))
(A/B/C/D)
D
((EXPLANATI
ON))
(OPTIONAL)

((MARKS))
(1/2/3...)
1
((QUESTION))
In the classic three-op-amp instrumentation amplifier, the differential
voltage gain is usually produced by the
Page 10

ADE (UNIT-IV) MCQs

ADE (UNIT-IV) MCQs

Download this file to view remaining 16 pages