C-04-Q115mediumsingle_mcq
A 1 kW motor lifts 2000 L of water to a 20 m height in 10 min. A 2 kW motor lifts 3000 L of water to a 40 m height in 15 min. Which motor is more economical (in terms of efficiency)?
A 1 kW motor lifts 2000 L of water to a 20 m height in 10 min. A 2 kW motor lifts 3000 L of water to a 40 m height in 15 min. Which motor is more economical (in terms of efficiency)?
- aThe 1 kW motor
- bThe 2 kW motor
- cBoth have equal efficiency
- dCannot be compared