MPSC Rajyaseva 2020 GS Paper 1 — Question 56
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300 वॅंचे एक धुलाई मशीन प्रतिदिन 1 तास चालवले जाते. जर एका युनिटचा दर ₹ 3.00 असेल, तर मार्च महिन्यामध्ये त्या मशिनसाठी वापरलेल्या विजेचा खर्च किती ? / A washing machine rated 300 Watt is operated for one hour/day. If the cost of one unit is ₹ 3.00, what will be the cost of the energy to operate a washing machine for the month of March ?
1)₹ 279.00
2)₹ 31.00
3)₹ 27.00
4)₹ 27.90✓ Correct
Power = 300 W = 0.3 kW. Energy consumed per day = 0.3 kW × 1 hour = 0.3 kWh (units). For March (31 days), total units = 31 × 0.3 = 9.3 units. Cost = 9.3 × Rs. 3.00 = Rs. 27.90.