Test: Magnetically Coupled Circuits

# Test: Magnetically Coupled Circuits

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## 20 Questions MCQ Test RRB JE for Electrical Engineering | Test: Magnetically Coupled Circuits

Test: Magnetically Coupled Circuits for Railways 2022 is part of RRB JE for Electrical Engineering 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.
Solutions of Test: Magnetically Coupled Circuits questions in English are available as part of our RRB JE for Electrical Engineering for Railways & Test: Magnetically Coupled Circuits solutions in Hindi for RRB JE for Electrical Engineering course. Download more important topics, notes, lectures and mock test series for Railways Exam by signing up for free. Attempt Test: Magnetically Coupled Circuits | 20 questions in 60 minutes | Mock test for Railways preparation | Free important questions MCQ to study RRB JE for Electrical Engineering for Railways Exam | Download free PDF with solutions
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Test: Magnetically Coupled Circuits - Question 1

### In the circuit shown in fig  i1  = 5sin 3t A and i2 = 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 = ?

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Test: Magnetically Coupled Circuits - Question 5

Leq = ?

Detailed Solution for Test: Magnetically Coupled Circuits - Question 5

Test: Magnetically Coupled Circuits - Question 6

Leq = ?

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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 = ?

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Test: Magnetically Coupled Circuits - Question 10

Leq = ?

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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

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Test: Magnetically Coupled Circuits - Question 13

Consider the circuit shown in fig

The voltage vBG of terminal BD is

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Test: Magnetically Coupled Circuits - Question 14

Consider the circuit shown in fig.

The voltage vGC of terminal CD is

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Test: Magnetically Coupled Circuits - Question 15

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

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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

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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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## RRB JE for Electrical Engineering

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