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Energy Quiz College Level National Institute of technology Kozhikode

All 24 questions from this finished quiz, with the correct answer and explanation. Finished 7 Oct 2026, 10:28 am IST.
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  1. 1. The unit of electrical energy commonly used by electricity utilities is

    A. Joule

    B. Watt

    C. Kilowatt-hour (kWh)

    D. Volt-Ampere

    Answer: C. Kilowatt-hour (kWh)

    Why: Utilities bill electrical energy in kilowatt-hours (units).

  2. 2. Power factor improvement mainly helps in

    A. Increasing voltage fluctuations

    B. Reducing transmission and distribution losses

    C. Increasing current demand

    D. Increasing frequency

    Answer: B. Reducing transmission and distribution losses

    Why: Improving the power factor reduces current, thereby lowering I²R losses and improving system efficiency.

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