Energy Engineering Question: Download Energy Engineering PDF

A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is

A. 8.57%
B. 42.85%
C. 4.28%
D. 85.7%

Option D

Previous Question	Next Question
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? A. 20.16 kWh B. 201.6 kWh C. 2.01 kWh D. 8.4 kWh	A given power supply is capable of providing 6 A for 3.5 h. Its ampere-hour rating is A. 0.58 Ah B. 2.1 Ah C. 21 Ah D. 58 Ah