Mining Engineering > GATE 2023 > Underground Coal Mining
A continuous miner served by two shuttle cars produces 240 tonne/hr. The capacity of each shuttle car is 10 tonne. When a single shuttle car operates, the cycle time becomes 4 min. In case one of the shuttle cars is under break-down, the reduction in hourly production from that of two cars in percent is ________. [rounded off to 1 decimal place]
Correct : 16.7
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