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- This is a FREE online test. DO NOT pay money to anyone to attend this test.
- Total number of questions : 20.
- Time alloted : 30 minutes.
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1. | A network has two branches in parallel. One branch contains impedance Z_{1} and the other branch has impedance Z_{2}. If it is fed from an ac voltage V of frequency f, the current through Z_{1} depends, on |
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Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: In parallel branches, the current through any branch depends only on voltage, impedance and frequency only. Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
2. | In figure the voltage drop across the 10 Ω resistance is 10 V. The resistance R |
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Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: Current supplied by battery = Therefore current through 2Ω resistance is 11 A. Voltage across R = 48 - 10 - 11 x 2 = 16 V. Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
3. | Two similar coils have self inductance of 1 mH each. Coefficient of coupling is 0.5. The mutual inductance M is |
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Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: M = kL_{1}L_{2} Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
4. | The rms voltage measured across each of the circuit element in figure is as shown, when the circuit is excited by a sinusoidal voltage E_{s}, the rms value of the source voltage e_{s} is |
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Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: Voltage across C = -10jv Voltage across L = + 14 jv source voltage E_{s} = V_{R} + jV_{L} - jV_{C} = 3 + j. 14 - j. 10 3 + j4 rms of E_{s} = V_{R}^{2}(V_{L} - V_{C})^{2} = 3^{2} + 4^{2} 5 volt. Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
5. | The ABCD parameters of ideal n : 1 transformer shown in the figure are . The value of X will be |
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Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: . Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
6. | In figure V is ideal voltmeter having infinite resistance. It will read __________ volt. |
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Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
7. | The correct relation between joules and calories is |
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Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: Calories and joules are related by J, i.e., mechanical equivalent of heat. Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
8. | A certain network has two ideal voltages sources and a large number of ideal resistances. The power consumed in one of the resistances is 4 W when either of two sources is active and the other source is active and the other source is short circuited. When both sources is short circuited.When both sources are active, the power consumed in the same resistor would be |
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Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: If currents of both sources add, total current would be twice and power is four time, i.e., 16 W. If currents subtract, net current and power are zero. Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
9. | Assertion (A): The impedance of a series resonant circuit is minimum at resonance. Reason (R): Resonance condition implies unity power factor condition. |
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Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: Since power factor is unity, impedance is minimum. Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
10. | The following circuit resonates at |
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Your Answer: Option (Not Answered) Correct Answer: Option D Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
11. | A steel bar needs 1200 AT to magnetise it. The voltage that must be applied to the magnetising coil of 100 turns and 10 Ω resistance is __________ volt. |
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Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
12. | Poor power factor |
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Your Answer: Option (Not Answered) Correct Answer: Option D Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
13. | A reactance function is always a quotient of |
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Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
14. | The Z parameter of the following T-network is |
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Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
15. | In figure the effective resistance faced by voltage source is |
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Your Answer: Option (Not Answered) Correct Answer: Option B Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
16. | Which of the following statements is incorrect? |
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Your Answer: Option (Not Answered) Correct Answer: Option C Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
17. | In Z_{RC} (s) = constant at s = 0, the last element in first Foster cauer realization is |
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Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
18. | For a series circuit of R and variable X_{L} the admittance locus is |
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Your Answer: Option (Not Answered) Correct Answer: Option B Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
19. | Assertion (A): In drawing an electric circuit analogous to a mechanical circuit, spring is replaced by capacitance. Reason (R): The behaviour of a spring and capacitor are similar. |
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Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |
20. | Norton's equivalent circuit |
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Your Answer: Option (Not Answered) Correct Answer: Option C Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum |