Questions
The power of a crane is 6.25 kW. How much mass in kg of coal it can lift in 1 hour from a mine of 100 m depth? The efficiency of the crane is 80%
detailed solution
Correct option is B
80100x6.25 x1000 =m x 10 x100 3600m =18,000 kgTalk to our academic expert!
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