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Test: Magnetically Coupled Circuits


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20 Questions MCQ Test GATE Electrical Engineering (EE) 2023 Mock Test Series | Test: Magnetically Coupled Circuits

Test: Magnetically Coupled Circuits for Railways 2022 is part of GATE Electrical Engineering (EE) 2023 Mock Test Series preparation. The Test: Magnetically Coupled Circuits questions and answers have been prepared according to the Railways exam syllabus.The Test: Magnetically Coupled Circuits MCQs are made for Railways 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Magnetically Coupled Circuits below.
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Test: Magnetically Coupled Circuits - Question 1

In the circuit shown in fig 

i = 5sin 3t A and i= 3 cos 3t A.

v2 = ?

Detailed Solution for Test: Magnetically Coupled Circuits - Question 1

=36 sin 3t + 45 cos 3t = 9(4sin 3t + 5cos 3t)  V

Test: Magnetically Coupled Circuits - Question 2

In the circuit shown in fig. if current i1 = 5 cos (500t - 20°) mA and i2 = 20 cos (500t - 20°) mA, the total energy stored in system at t = 0 is

Detailed Solution for Test: Magnetically Coupled Circuits - Question 2

At t = 0, i1 = 4 cos (-20°) = 4.7 mA
i2 = 20 cos (-20°) = 18.8 mA, 


= 151.3 μJ

Test: Magnetically Coupled Circuits - Question 3

Leq  = ?

 

Detailed Solution for Test: Magnetically Coupled Circuits - Question 3

Test: Magnetically Coupled Circuits - Question 4

Leq = ?

Detailed Solution for Test: Magnetically Coupled Circuits - Question 4

 

Test: Magnetically Coupled Circuits - Question 5

Leq = ?

Detailed Solution for Test: Magnetically Coupled Circuits - Question 5

Test: Magnetically Coupled Circuits - Question 6

Leq = ?

Detailed Solution for Test: Magnetically Coupled Circuits - Question 6

Test: Magnetically Coupled Circuits - Question 7

The equivalent inductance of a pair of a coupled inductor in various configuration are
(a) 7 H after series adding connection
(b) 1.8 H after series opposing connection
(c) 0.5 H after parallel connection with dotted terminal connected together.

The value of L1 L2 , and M are

Detailed Solution for Test: Magnetically Coupled Circuits - Question 7

 
⇒ 


Test: Magnetically Coupled Circuits - Question 8

Leq = ?

Detailed Solution for Test: Magnetically Coupled Circuits - Question 8

Test: Magnetically Coupled Circuits - Question 9

Leq = ?

Detailed Solution for Test: Magnetically Coupled Circuits - Question 9

Test: Magnetically Coupled Circuits - Question 10

Leq = ?

Detailed Solution for Test: Magnetically Coupled Circuits - Question 10



 

Test: Magnetically Coupled Circuits - Question 11

Leq = ?

Detailed Solution for Test: Magnetically Coupled Circuits - Question 11

Let I1 be the current through 4 H inductor and I2 and I3 be the current through 3 H, and 2 H inductor respectively


 


Test: Magnetically Coupled Circuits - Question 12

Consider the circuit shown in fig.

The voltage VAG of terminal AD is

Detailed Solution for Test: Magnetically Coupled Circuits - Question 12

Test: Magnetically Coupled Circuits - Question 13

Consider the circuit shown in fig

The voltage vBG of terminal BD is

Detailed Solution for Test: Magnetically Coupled Circuits - Question 13

Test: Magnetically Coupled Circuits - Question 14

Consider the circuit shown in fig.

The voltage vGC of terminal CD is

Detailed Solution for Test: Magnetically Coupled Circuits - Question 14

Test: Magnetically Coupled Circuits - Question 15

In the circuit of fig. the  ω =2 rad/s. The resonance occurs when C is

Detailed Solution for Test: Magnetically Coupled Circuits - Question 15







Test: Magnetically Coupled Circuits - Question 16

In the circuit of fig, the voltage gain is zero at ω= 333.33 rad/s.

The value of C is

Detailed Solution for Test: Magnetically Coupled Circuits - Question 16

Test: Magnetically Coupled Circuits - Question 17

In the circuit of fig. at ω = 333.33 rad/s, the voltage gain vout / vin  is zero. The value of C is

Detailed Solution for Test: Magnetically Coupled Circuits - Question 17

The π  equivalent circuit of coupled coil is shown in fig


Output is zero if 

Test: Magnetically Coupled Circuits - Question 18

The evenin equivalent at terminal ab for the network shown in fig. is 

Detailed Solution for Test: Magnetically Coupled Circuits - Question 18

Applying 1 V test source at ab terminal,


 
 
 = 0.25 A

Test: Magnetically Coupled Circuits - Question 19

In the circuit of fig. the maximum power delivered to RL is

Detailed Solution for Test: Magnetically Coupled Circuits - Question 19

Impedance seen by RL = 10 x 42 = 160 Ω
For maximum poer RL = 160Ω, Zo = 10Ω
= 250 W

Test: Magnetically Coupled Circuits - Question 20

The average power delivered to the 8 Ω load in the circuit of fig. is

Detailed Solution for Test: Magnetically Coupled Circuits - Question 20

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