electrical circuit
DESCRIPTION
Electrical CircuitTRANSCRIPT
-
ESE Online Test Series : 2015Conventional Paper
EE : ELECTRICAL ENGINEERINGTEST - 2 | Electrical Circuits
Date: 01-03-2015 | Subjectwise Test
Duration: 1 hrs. Maximum Marks: 100
Read the following instructions carefullyRead the following instructions carefullyRead the following instructions carefullyRead the following instructions carefullyRead the following instructions carefully
1. Candidate should attempt any FOURFOURFOURFOURFOUR questions out of five. Each question carries 25 marks.
2. Marks carried by each subdivision of a question is indicated at the end of subdivision.
3. Answers must be written only in ENGLISH.
4. Assume suitable data, if necessary, and indicate the same clearly.
5. Neat sketches may be drawn, wherever required.
Corporate Office (Delhi): 44-A/1 Kalu Sarai (Sarvapriya Vihar), New Delhi-16, Ph: 011-45124612, 9958995830Visit us at: www.madeeasy.in | E-mail us at: [email protected]
Delhi | Hyderabad | Noida | Bhopal | Jaipur | Lucknow | Indore | Pune | Bhubaneswar | Kolkata
Copyright : MADE EASY
ONLINE MODE
-
Delhi Noida Bhopal Hyderabad Jaipur Lucknow Indore Pune Bhubaneswar Kolkata
2 Electrical Engineering Electrical Circuits
IOTEE15
Q.1Q.1Q.1Q.1Q.1 (a)(a)(a)(a)(a) In the circuit shown below the switch is initially in position 1. Find the voltage across the coil at theinstant at which the switch is changed to position 2.
Coil500
2
20 Switch
120 V
1
LC = 10 H
RC = 40
[10 marks][10 marks][10 marks][10 marks][10 marks]
(b)(b)(b)(b)(b) Realise Y = 2
23 4 1
1.25 3 1
s s
s s
+ ++ + in Cauer-II form.
[15 marks][15 marks][15 marks][15 marks][15 marks]
Q.2Q.2Q.2Q.2Q.2 (a)(a)(a)(a)(a) The network shown in figure is first at position a and reached to steady state. When the switch s movesfrom a to b.
10 V
1 H
5 V
sa
b
iL( )t1 F
+
V tC( ) 1
Determine initial values for iL(t) and VC(t) and their first derivatives with switch in position b.[15 marks][15 marks][15 marks][15 marks][15 marks]
(b)(b)(b)(b)(b) Determine the I0 in figure shown using Nortons theorem
+
I0
10
j40
3 0 A
10
j4
2j 5
40 90 V
8
[10 marks][10 marks][10 marks][10 marks][10 marks]
-
3ESE Online Test Series 2015 : Conventional Paper
Delhi Noida Bhopal Hyderabad Jaipur Lucknow Indore Pune Bhubaneswar Kolkata IOTEE15
Q.3Q.3Q.3Q.3Q.3 (a)(a)(a)(a)(a) The circuit shown below is unenergized before closing the switch at t=0. The circuit constants areL1 = 1 H, L2 = 4 H, M = 2 H, R1 = 1 , R2 = 1 , V = 5 volts. Find i1(t) from the instant the switch isclosed.
i1( )t
t = 0 R1
L1+
V
M
i2( )tL2 R2
[15 marks][15 marks][15 marks][15 marks][15 marks]
(b)(b)(b)(b)(b) Find the current through the 5-ohm resistor in the circuit shown in figure.
10
10 10 5 15
30 V
A
30
B D C
[10 marks][10 marks][10 marks][10 marks][10 marks]
Q.4Q.4Q.4Q.4Q.4 (a)(a)(a)(a)(a) Find the Y-parameters of the circuit shown below.
+
V1
+
V2
23 F3
2 4
32 H
12 H
[15 marks][15 marks][15 marks][15 marks][15 marks]
(b)(b)(b)(b)(b) In the circuit shown below, using the superposition theorem, determine the currents in the variousresistors and the voltage source.
+
R1
2
4 R3 I = 3 AE = 6 V R2 3
[10 marks][10 marks][10 marks][10 marks][10 marks]
-
Delhi Noida Bhopal Hyderabad Jaipur Lucknow Indore Pune Bhubaneswar Kolkata
4 Electrical Engineering Electrical Circuits
IOTEE15
Q.5Q.5Q.5Q.5Q.5 (a)(a)(a)(a)(a) Evaluate V2/Vs in the circuit in figure5 I2
20
z = 12 11z = 8
z = 8
z = 20
12
21
22
V1 V2
10
Vs
+ +
+
I1
[10 marks][10 marks][10 marks][10 marks][10 marks]
(b)(b)(b)(b)(b) Determine the Y-parameters for the two-port shown in figure and comment on reciprocity of circuit.
2i
i 8 4
2
[15 marks][15 marks][15 marks][15 marks][15 marks]