Network Theory
JKSSB Sub-Inspector (Telecommunication) · Electronic Devices, Analog Circuits & Network Theory · 14 practice questions with answers and explanations: 3 Easy, 6 Medium, 5 Hard.
Sample questions
Sample Easy question 1
What is 'Ohm's Law'?
- V = IR, relating voltage, current, and resistance
- P = IV only
- V = I + R
- R = V × I
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Answer: A. Ohm's Law states that voltage equals current times resistance: V = IR.
Sample Medium question 2
What does Thevenin's theorem allow you to do?
- Replace a complex linear circuit with an equivalent single voltage source and series resistance
- Eliminate the need for Ohm's law
- Calculate power in three-phase systems only
- Determine only the frequency response
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Answer: A. Thevenin's theorem simplifies any linear circuit into an equivalent voltage source with series resistance, as seen from two terminals.
Sample Hard question 3
What is 'power factor' in an AC circuit?
- The ratio of real power to apparent power, indicating how effectively power is being used
- The total resistance in a circuit
- The frequency of the AC supply
- The peak voltage of the circuit
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Answer: A. Power factor measures how efficiently electrical power is converted into useful work output.