A power shovel is having 1.8 m3 excavation output per batch of operation. The average cycle time of the batch operation is 45 seconds. The lost time per hour of the excavation

Q. A power shovel is having 1.8 m³ excavation output per batch of operation. The average cycle time of the batch operation is 45 seconds. The lost time per hour of the excavation activity is 10 minutes. Assume six working hours of operation per day. The amount of soil excavated by the power shovel per day is   m³ (rounded off to two decimal places).

1. 720
2. 360
3. 180
4. 270

Ans: 720

Solution:

Effective operating time per day = 50 × 6 = 300 min

Volume of soil excavated =