Energy and Power Online Test – Multiple Choice Questions and Answers Posted on April 16, 2024April 16, 2024 by engineer1 Comment 1. A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume? 2.01 kWh 8.4 kWh 20.16 kWh 201.6 kWh 2. Three hundred joules of energy are consumed in 15 s. The power is 2 W 20 W 200 W 2000 W 3. When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is open shorted reversed overheated 4. At the end of a 14 day period, your utility bill shows that you have used 18 kWh. What is your average daily power? 12.85 kWh 535 kWh 1.286 kWh 252 kWh 5. A half-watt is equal to how many milliwatts? 5 mW 50 mW 500 mW 5000 mW 6. A given power supply is capable of providing 6 A for 3.5 h. Its ampere-hour rating is 0.58 Ah 58 Ah 2.1 Ah 21 Ah 7. How many watt-hours represent 65 W used for 18 h? 11.7 Wh 11.70 Wh 11.700 Wh 117,000 Wh 8. In 0.025 W, there are 25 mW 25 kW 2,500 µW 0.00025 mW 9. A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is 85.7% 42.85% 4.28% 8.57% 10. For 12 V and 40 mA, the power is 0.480 W 480 mW 480,000 µW All Loading … Question 1 of 10
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in Ques no 07 all obscene as same 11.7, 11.70, 11.700 please correct the same