An ideal constant current source is connected in series with an ideal constant voltage source. Considering together, the combination will be a

Constant voltage and current source or a constant power source

137 + Mcqs in Network theory miscellaneous in Network Theory Page 1 McqOptions

1.	In figure, the admittance values of the elements in siemens are Y_R = 0 5 + j0, Y_L = 0 J1 5, Y_C = 0 + j0 3 respectively. The value of I as a phasor when the voltage E across the elements is 10 0 V is
A.	1 5 + j0 5
B.	5 j18
C.	0 5 + j1 8
D.	5 j12
Answer» E.

Discussion

2.

If the transfer function of the following network is
V₀(s) = 1
V_i(s) 2 + RCs

The value of load resistance R_L is

A.

R/4

B.

R/2

C.

R

D.

2R

Answer» D. 2R

Discussion

3.	For the circuit shown below V_d = ?
A.	8 8V
B.	3 12V
C.	3 12V
D.	4 4V
Answer» C. 3 12V

Discussion

4.	For the circuit shown below, find the value of R for which I₁ = 2A
A.	80
B.	20
C.	40
D.	None of these
Answer» D. None of these

Discussion

5.	Find I_E if element E absorbs 2W of power
A.	2A
B.	0 5A
C.	0 5A
D.	2A
Answer» E.

Discussion

6.	Assuming ideal elements in the circuit shown below, the voltage V_ab will be
A.	3V
B.	0V
C.	3V
D.	5V
Answer» B. 0V

Discussion

7.	The circuit shown in the above figure 1. is reciprocal 2. has Z₁₁ = 2, Z₂₂ = 2 3. has Z₁₁ = 4, Z₂₂ = 2 4. has Z₁₁ = 0, Z₂₂ = 2 Select the correct answer using the code given below
A.	1 and 3
B.	1 and 2
C.	1 and 4
D.	3 only
Answer» B. 1 and 2

Discussion

8.	What is the value of the parameter h₁₂ for the 2-port network shown in the figure given above?
A.	0 125
B.	0 167
C.	0 250
D.	0 625
Answer» D. 0 625

Discussion

9.	In the circuit shown below, what is the voltage across 5 resistor i.e. (V₁ V₂)
A.	30V
B.	30V
C.	1250V
D.	1250V
Answer» C. 1250V

Discussion

10.	In the circuit shown in the figure below, for what value of C will the current I be in phase with the sinusoidal source voltage V_s = sin 2t?
A.	1F
Answer» C.

Discussion

11.	The two electrical subnetworks N₁ and N₂ are connected through three resistors as shown below. The voltage across the 5 resistor and the 1 resistor are given to be 10V and 5V respectively. The voltage across the 15 resistor is
A.	105V
B.	+ 105V
C.	15V
D.	+ 15V
Answer» B. + 105V

Discussion

12.

The laplace transform of the waveform shown in the figure is
F(s) = 1 (1 + Ae^-e + Be^-4s + Ce^-6s + De^-8s)
s²

What is the value of D?

A.

0 5

B.

1 5

C.

0 5

D.

2 0

Answer» D. 2 0

Discussion

13.	Consider the circuit as shown below which has a current dependent current source. The value V₂ /V₁ is
A.	1
B.	2
Answer» D.

Discussion

14.	Which of the following are the conditions for a two port passive network to be a reciprocal one? 1. Z₁₂ = z₂₁ 2. Y₁₂ = y₂₁ 3. h₁₂ = h₂₁ Select the correct condition from the code given below
A.	Only 1 and 2
B.	Only 2 and 3
C.	Only 1 and 3
D.	1, 2 and 3
Answer» E.

Discussion

15.	What is the value of Z₂₁ for the network shown above?
A.	2
B.	1/2
C.	1
D.	2
Answer» C. 1

Discussion

16.	What is the open circuit impedance Z₁₁(s) of the network shown in the figure given above?
A.	10 + 2s
B.
C.	10 2s
Answer» B.

Discussion

17.	For the circuit shown below, the current I_AB is
A.	2mA
B.	2mA
C.	5mA
D.	5mA
Answer» B. 2mA

Discussion

18.	The value of voltage V_x for the circuit shown below
A.	7V
B.	6V
C.	6V
D.	7V
Answer» B. 6V

Discussion

19.	Find I_D if element D absorbs 27W of power
A.	9A
B.	9A
C.	4A
D.	4A
Answer» B. 9A

Discussion

20.	If element A generates 20W of power, find V_A
A.	40V
B.	5V
C.	10V
D.	None of these
Answer» C. 10V

Discussion

21.	The total reactance of a series RLC circuit at resonance
A.	equal to X
B.	equal to X
C.
D.	equal to R
E.	Zero
Answer» E. Zero

Discussion

22.	V_in = ?
A.	8V
B.	16V
C.	24V
D.	None of these
Answer» D. None of these

Discussion

23.	I₃ = ?
A.	2A
B.	4A
C.	6A
D.	None of these
Answer» B. 4A

Discussion

24.	Find V_C if element C generates 3W of power
A.	+ 1V
B.	9V
C.	1V
D.	9V
Answer» D. 9V

Discussion

25.	For the circuit shown below, V₁ = 40V when R is 10 . When R is 0 , the value of V₂ will be
A.	40V
B.	30V
C.	20V
D.	10V
Answer» B. 30V

Discussion

26.	Calculate total current I_T
A.	0 24 33
B.	2 4 33
C.	24 30
D.	None of these
Answer» B. 2 4 33

Discussion

27.	In a two element series network, the voltage and current respectively given as, v (t) = 50 sin (314t) + 50 sin (942t) V i(t) = 10 sin (314t + 60 ) + 8 sin (942t + 45 ) A, then the power factor of the network is approximately
A.	0 9
B.	0 6
C.	0 3
D.	0 1
Answer» C. 0 3

Discussion

28.	For the circuit shown below, the V_out =?
A.	6V
B.	6V
C.	4V
D.	4V
Answer» B. 6V

Discussion

29.	For the circuit shown below, the value of I₁ = ?
A.	2A
B.	1A
C.	3 6A
D.	None of these
Answer» D. None of these

Discussion

30.	The circuit shown in figure 1 is replaced by that in figure 2. If current I remains the same, then R₀ will be
A.	Zero
B.	R
C.	2R
D.	4R
Answer» E.

Discussion

31.	If the transmission parameters of the network shown below are A = C = 1, B = 2 and D = 3, then the value of Z_in is
A.	12/13
B.	13/12
C.	3
D.	4
Answer» B. 13/12

Discussion

32.	A linear resistive circuit has two inputs V_s1 and i_s2 with output Vout, as shown below. Table below shows the result of two sets of measurement taken in laboratory. Find the output voltage when the inputs are V_s1 = 10V and i_s2 = 8A.
A.	30V
B.	-30V
C.	12V
D.	None of these
Answer» B. -30V

Discussion

33.	Two AC sources feed a common variable resistive load as shown in figure. Under the maximum power transfer condition, the power absorbed by the load resistance R_L is
A.	2200W
B.	1250W
C.	500W
D.	625W
Answer» D. 625W

Discussion

34.	In the AC network shown in the figure, the phasor voltage V_AB (in Volts) is
A.	0
B.	5 30
C.	12 5 30
D.	17 30
Answer» E.

Discussion

35.	For a parallel RLC resonant circuit, the damped frequency is 8 r/s and bandwidth is 2 r/s. What is its resonant frequency?
A.	2
B.
C.
D.	3
Answer» E.

Discussion

36.	For the circuit shown below, the current I_x and power delivered by the independent source is
A.	0 4A, 16W
B.	0 4A, 16W
C.	4A, 160W
D.	4A, 160W
Answer» C. 4A, 160W

Discussion

37.	The power absorbed by the unknown element X in the circuit shown below is
A.	25W
B.	10W
C.	15W
D.	None of these
Answer» C. 15W

Discussion

38.	If the transfer function of the following network is
A.	R/4
B.	R/2
C.	R
D.	2R
Answer» D. 2R

Discussion

39.	An ideal constant current source is connected in series with an ideal constant voltage source. Considering together, the combination will be a
A.	Constant voltage source
B.	Constant current source
C.	Constant voltage and current source or a constant power source
D.	Resistance
Answer» C. Constant voltage and current source or a constant power source

Discussion

40.	In the interconnection of ideal soures shown in the figure, it is known that the 60V source is absorbing power. Which of the following can be the value of the current source I?
A.	10A
B.	13A
C.	15A
D.	18A
Answer» B. 13A

Discussion

41.	For the circuit shown below, calculate R
A.	2
B.	4
C.	6
D.	8
Answer» E.

Discussion

42.	For the circuit shown below, the value of R is
A.	30
B.	60
C.	40
D.	None of these
Answer» B. 60

Discussion

43.	For the circuit shown below, find the value of R for which I
A.	80
B.	20
C.	40
D.	None of these
Answer» D. None of these

Discussion

44.	For the circuit shown below V
A.	8 8V
B.	3 12V
C.	3 12V
D.	4 4V
Answer» C. 3 12V

Discussion

45.	The voltage V for the network shown below is equal to
A.	3V
B.	3V
C.	5V
D.	None of these
Answer» C. 5V

Discussion

46.	An ideal constant current source is connected in parallel with an ideal constant voltage source. Considering together the combination will be a
A.	Constant voltage source
B.	Constant current source
C.	Constant power source
D.	None of these
Answer» C. Constant power source

Discussion

47.	For the circuit shown below, the power absorbed by 2 resistor is
A.	50W
B.	8W
C.	18W
D.	32W
Answer» D. 32W

Discussion

48.	Which one of the following is the transmission matrix for the network shown in the figure given above?
A.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>1+yz</center></td><td><center>z</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">y</td><td style="text-align: center;">1</td></tr></table>
B.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>1</center></td><td><center>z</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">y</td><td style="text-align: center;">1+yz</td></tr></table>
C.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>1</center></td><td><center>1+yz</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">z</td><td style="text-align: center;">y</td></tr></table>
D.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>1</center></td><td><center>1+yz</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">z</td><td style="text-align: center;">y</td></tr></table>
Answer» D. <table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>1</center></td><td><center>1+yz</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">z</td><td style="text-align: center;">y</td></tr></table>

Discussion

49.	Two 2-port networks with transmission matrices are connected in cascade. Which is the transmission matrix of the combination?
A.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>3</center></td><td><center>10</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">2.2</td><td style="text-align: center;">12.4</td></tr></table>
B.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>3</center></td><td><center>6</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">0.2</td><td style="text-align: center;">12.4</td></tr></table>
C.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>1</center></td><td><center>10</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">2.0</td><td style="text-align: center;">12.4</td></tr></table>
D.	<table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>3</center></td><td><center>10</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">12.4</td><td style="text-align: center;">2.2</td></tr></table>
Answer» B. <table><tr><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-obracket-h1.gif"></td><td><center>3</center></td><td><center>6</center></td><td rowspan="2"><img src="https://www.indiabix.com/_files/images/data-interpretation/common/15-sym-cbracket-h1.gif"></td></tr><tr><td style="text-align: center;">0.2</td><td style="text-align: center;">12.4</td></tr></table>

Discussion

50.	The terminal volt-ampere conditions of a linear reciprocal network N are shown in the figure (a). What is the current I corresponding to the terminal conditions shown in the figure (b)?
A.	1A
B.	9A
C.	10A
D.	11A
Answer» E.

Discussion

Explore topic-wise MCQs in Network Theory.

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If the transfer function of the following network is
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Assuming ideal elements in the circuit shown below, the voltage V_ab will be

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1. is reciprocal
2. has Z₁₁ = 2, Z₂₂ = 2
3. has Z₁₁ = 4, Z₂₂ = 2
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Select the correct answer using the code given below

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s²

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Which of the following are the conditions for a two port passive network to be a reciprocal one?
1. Z₁₂ = z₂₁
2. Y₁₂ = y₂₁
3. h₁₂ = h₂₁
Select the correct condition from the code given below

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In a two element series network, the voltage and current respectively given as,
v (t) = 50 sin (314t) + 50 sin (942t) V
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A, then the power factor of the network is approximately

For the circuit shown below, the V_out =?

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