Explore topic-wise MCQs in Analog Electronic Circuits.

This section includes 343 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Electronic Circuits knowledge and support exam preparation. Choose a topic below to get started.

1.

Given a unity feedback system with open-loop transfer function, The root locus plot of the system is of the form :

A. [A].
B. [B].
C. [C].
D. [D].
Answer» C. [C].
Discussion
2.

The transfer function of a closed loop system is where K is the forward path gain. The root locus plot of the system is :

A. [A].
B. [B].
C. [C].
D. [D].
Answer» C. [C].
Discussion
3.

If the closed-loop transfer function T(s) of a unity negative feedback system is given by then the steady state error for a unit ramp input is :

A. [A].
B. [B].
C. [C].
D. ∞
Answer» E.
Discussion
4.

Given A = the state transition matrix eAT is given by

A. [A].
B. [B].
C. [C].
D. [D].
Answer» C. [C].
Discussion
5.

For the circuit shown in figure below, the initial conditions are zero, its transfer function H(s) = is :

A. [A].
B. [B].
C. [C].
D. [D].
Answer» C. [C].
Discussion
6.

In a synchro error detector, the output voltage is proportional to [ω(t)]n, where ω(t) is the rotor velocity and n equals :

A. -2
B. -1
C. 1
D. 2
Answer» D. 2
Discussion
7.

The signal flow graph of a system is shown in figure. The transfer function of the system is :

A. [A].
B. [B].
C. [C].
D. [D].
Answer» E.
Discussion
8.

The transfer function of a tachometer is of the form :

A. Ks
B. K/s
C. [C].
D. [D].
Answer» D. [D].
Discussion
9.

Consider the signal flow graph shown in figure below. The gain is :

A. [A].
B. [B].
C. [C].
D. [D].
Answer» D. [D].
Discussion
10.

An electrical system and its signal-flow graph representation are shown in figure (a) and (b) respectivelyThe values of G2 and H, respectively are

A. [A].
B. [B].
C. [C].
D. [D].
Answer» B. [B].
Discussion
11.

The Function F = ∑(0, 3, 4, 5, 7) is implemented using the multiplexer then Identify the correct one :

A. [A].
B. [B].
C. [C].
D. None
Answer» D. None
Discussion
12.

F = ∑(0, 3, 4, 5, 7) =

A. [B ⊕ C] + AC
B. B'C' + BC + AC
C. AB + BC + CA
D. None
Answer» C. AB + BC + CA
Discussion
13.

ωL =

A. 108 rad/sec
B. 104 rad/sec
C. 102 rad/sec
D. 10 rad/sec
Answer» E.
Discussion
14.

ωH =

A. 108 rad/sec
B. 104 rad/sec
C. 102 rad/sec
D. 10 rad/sec
Answer» B. 104 rad/sec
Discussion
15.

The figure shown below is designed to act as a constant current source across the load resistor. The β of transistor is 50. What is the value of load current?

A. 1.96 mA
B. 2 mA
C. 2.04 mA
D. None
Answer» B. 2 mA
Discussion
16.

The switching expression corresponding to :f(A, B, C, D)= ∑(0, 3, 4, 7, 8) + (10, 11, 12, 14, 15) is:

A. C D + B C
B. C ⊙ D
C. C ⊕ D
D. CD
Answer» C. C ⊕ D
Discussion
17.

The truth table corresponding to the given input digital gate :

A. [A].
B. [B].
C. [C].
D. [D].
Answer» E.
Discussion
18.

Consider the differential amplifier shown in figure. (Assume β is very high).Zin (base) =

A. 1 MΩ
B. 100 kΩ
C. 15 kΩ
D. ≈ 0
Answer» D. ≈ 0
Discussion
19.

Consider the differential amplifier shown in figure. (Assume β is very high).IE(approximately) =

A. 2 mA
B. 1 mA
C. 0.5 mA
D. 3 mA
Answer» B. 1 mA
Discussion
20.

The input impedance of figure given below is

A. Rg(1 + Av)
B. [B].
C. Rg(1 - Av)
D. [D].
Answer» D. [D].
Discussion
21.

Consider the differential amplifier shown in figure. (Assume β is very high).VC =

A. 5 V
B. 10 V
C. 15 V
D. 30 V
Answer» C. 15 V
Discussion
22.

For the BJT shown in figure, β = 50, the value of VCE is:

A. 3.13 V
B. 4.24 V
C. 5.18 V
D. none
Answer» E.
Discussion
23.

For the circuit shown in the given figure, assuming ideal op-amps, the output corresponding to the given input will be :

A. [A].
B. [B].
C. [C].
D. [D].
Answer» B. [B].
Discussion
24.

The output corresponding to the figure shown below is :

A. [A].
B. [B].
C. [C].
D. [D].
Answer» D. [D].
Discussion
25.

A current source with three basic transistors is shown. All transistors are similar. All are having finite current gain βThen I0 is

A. [A].
B. [B].
C. [C].
D. [D].
Answer» B. [B].
Discussion
26.

Consider the following statements a half adder. As a half subtractor alsohas two outputs CH = x x y and Sn = x ⊕ y for two inputs x and yhas two outputs CH = x + y and SH = x ⊕ y for two inputs x and yis a combinational circuit Which of the statements given above is/are correct?

A. 1, 3, 4
B. 1, 2, 4
C. 4 only
D. 2 and 3
Answer» C. 4 only
Discussion
27.

In a 4 bit weighted resistor D/A converter, the resistor value corresponding to LSB is 32 kΩ. The resistor value corresponding to MSB will be

A. 32 KΩ
B. 16 KΩ
C. 8 KΩ
D. 4 KΩ
Answer» E.
Discussion
28.

An XOR gate with 8 variable is as follows: A ⊕ B ⊕ C ⊕ D ⊕ E ⊕ F ⊕ G ⊕ HThe number of minterms in the Boolean expression is

A. 255
B. 127
C. 128
D. 256
Answer» D. 256
Discussion
29.

The circuit shown in the figure has 4 boxes each described by inputs P, Q, R and outputs Y, Z withY = P ⊕ Q ⊕ R, Z = RQ + P R + Q PThe circuit is a

A. 4 bit adder giving P + Q
B. 4 bit subtractor giving P - Q
C. 4 bit subtractor giving Q - P
D. 4 bit adder giving P + Q + R
Answer» C. 4 bit subtractor giving Q - P
Discussion
30.

Two D flip-flop as shown below are to be connected as a synchronous counter that goes through the following Q1Q0 sequence00 → 01 → 11 → 10 → 00 → __________ The inputs D0 and D1 respectively should be connected as

A. Q1 and Q0
B. Q0 and Q1
C. Q1 Q0 and Q1 Q0
D. Q1 Q0 and Q1 Q0
Answer» B. Q0 and Q1
Discussion
31.

Find 'X' in the circuit below :f1(A, B, C, D) = Σ(6, 7, 13, 14);f2(A, B, C, D) = Σ(3, 6, 7);f3(A, B, C, D) = Σ(5, 6, 7, 14, 15)

A. p(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15)
B. 0
C. Σ(14)
D. 1
Answer» D. 1
Discussion
32.

The logic function f(A B, C) = Σm(0, 2, 4, 5, 6) represented by

A. i
B. i, ii
C. i, iii
D. i, ii, iii
Answer» C. i, iii
Discussion
33.

The expression given is F(A, B, C, D, E, F, G, H) = Σ(33, 48, 102, 158, 222, 229, 233, 243, 255); then the __________ and __________ minterms are grouped together into dual and variable __________ is reduced using the dual

A. 243, 233, D
B. 222, 158, B
C. 243, 255, A
D. 229, 243, E
Answer» C. 243, 255, A
Discussion
34.

An infinite ladder is constructed with 1 Ω and 2 Ω resistors as shown below. Find i

A. 8.1818 A
B. 0 A
C. 9 A
D. cannot be determined
Answer» D. cannot be determined
Discussion
35.

In a infinite ladder circuit as shown above each resistance of r Ω then find RAB

A. ∞
B. [B].
C. 1.61r
D. none of the above
Answer» D. none of the above
Discussion
36.

Find Y- parameters

A. [A].
B. [B].
C. [C].
D. None of these
Answer» B. [B].
Discussion
37.

Find z parameters for the following network

A. [A].
B. [B].
C. [C].
D. [D].
Answer» B. [B].
Discussion
38.

I1(s) and I2(s) are the Laplace transforms of i1(t) and i2(t) respectively. The equations for the circuit shown in above figure when switch S is closed at t = 0; are

A. [A].
B. [B].
C. [C].
D. [D].
Answer» D. [D].
Discussion
39.

Values of iL, , VC and at t = 0 are given by,

A. 4 Amp, - 4 Amp/sec, 12 volts, - 4 volts/s
B. 4 Amp, 4 Amp/sec, -12 volts, - 12 volts/s
C. 6 Amp, - 2 Amp/sec, 0 volts, - 2 volts/sec
D. 6 Amp, 0 Amp/sec, - 2 volts, - 2 volts/sec
Answer» D. 6 Amp, 0 Amp/sec, - 2 volts, - 2 volts/sec
Discussion
40.

V(t) across R2 for t > 0 is given by,

A. 2 - 2e-2t
B. 2 - e-2t
C. 2 - e-t
D. 1 - e-t
Answer» C. 2 - e-t
Discussion
41.

The equation for loop currents I1 and I2 are __________

A. [A].
B. [B].
C. [C].
D. [D].
Answer» D. [D].
Discussion
42.

The practical resonant circuit is shown in above figure. Find the expression for the resonant frequency ωo

A. [A].
B. [B].
C. [C].
D. None of these
Answer» C. [C].
Discussion
43.

Consider the resonant circuit as shown belowThe circuit is scaled modified so that Zmax 104 and ωo = 108 Radians. Find the required element values

A. R = 104 L = 5 μH C = 20 pF
B. 1000 L = 50 μH C = 200 pF
C. 10 K L = 50 μH C =20 pF
D. None of these
Answer» D. None of these
Discussion
44.

For the network shown below, the Thevenin voltage and RTH is equal to __________

A. 0 V, 58.82 Ω
B. 0 V, 96.774 Ω
C. 0 V, 3 KΩ
D. None of these
Answer» B. 0 V, 96.774 Ω
Discussion
45.

Find the value of ix if each resistance is of 3 Ω and each battery is of 6 V.

A. 1.1428 V
B. 1.432 A
C. 0.2892 A
D. O A
Answer» D. O A
Discussion
46.

Find equivalent resistance. Each resistance is l Ω

A. 5/12 Ω
B. 5/6 Ω
C. 6/5 Ω
D. 6/10 Ω
Answer» C. 6/5 Ω
Discussion
47.

The star equivalent C1 C2, C3 of the delta network is respectively

A. [A].
B. [B].
C. [C].
D. [D].
Answer» B. [B].
Discussion
48.

The differential equation for the current i(t) in the circuit of figure is

A. [A].
B. [B].
C. [C].
D. [D].
Answer» D. [D].
Discussion
49.

If RT, Rh represent condition for reciprocity in case of transmission parameter and hybrid parameter respectively and similarly ST, Sh represent condition for symmetry in case of transmission parameter and hybrid parameter respectively then match the following :(1) RT (a) A = D(2) Rh (b) h12 = h21(3) ST (c) AD - BC = 1(4) Sh (d) h12 = - h21 (e) B = c (f) Δh = 1

A. 1 - c 2 - d 3 - a 4 - f
B. 1 - c 2 - b 3 - e 4 - d
C. 1 - e 2 - d 3 - a 4 - b
D. 1 - e 2 - d 3 - a 4 - f
Answer» B. 1 - c 2 - b 3 - e 4 - d
Discussion
50.

At t = ∞; VR2 and VC will be

A. 4, 4
B. 2, 4
C. 0, 2
D. 2, 0
Answer» C. 0, 2
Discussion