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Electronic Systems Thinking and Circuits · Qualifier · 26 Oct 2025 · September 2025 term

Question 12: In a household, the following electrical appliances are …

Question 12

+2 marksOne correct option

In a household, the following electrical appliances are used every day:
• 4 bulbs, each rated at 30 W, operated for 5 hours • 4 tube lights, each rated at 50 W, operated for 8 hours • 1 air conditioner rated at 1000 W, operated for 1 hour
Assume each appliance draws power continuously whenever it is switched ON. If 1 unit of electrical energy = 1 kWh, determine the total number of units of electrical energy consumed in a 30-day month.

  1. A

    91.5

  2. B

    96

  3. C

    92.5

  4. D

    95

Show answer

Correct answer

  • B

    96

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Question 12 of 20 in the IIT Madras BS Electronic Systems Thinking and Circuits (ESTC) Qualifier paper sat on 26 Oct 2025, in the September 2025 term (IIT M ES QUALIFIER AN EXAM QEQ1 26 Oct). It carries 2 marks.

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