Asked by Majiri

What is the efficiency of a crane that used current of 8A at 150V to raise 450kg load at the rate of every minutes?

Answers

Answered by Damon
Rate of WHAT every how many minutes?
Please check what you type.

Power in = i V = 8 * 150 watts or Joules/second

Useful work done per second in Joules/sec
= m g h/(60*minutes)

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