- Electric Rope Shovel
- Dragline
- Hydraulic shovel
- Grab Bucket Excavator
- hydraulic accumulator
- hydraulic crane
- hydraulic gear
- hydraulic pump
- Hydraulic turbines
- Tidal power
- Solar energy
- Wind power
- More power
- Less power
- Same power
- None of the above
- Belt velocity
- Initial belt tension
- Arc of contact
- All of these
- decreases
- increases
- remains the same
- none of these
- directly proportional to their diameters
- inversely proportional to their diameters
- directly proportional to the square of their diameters
- inversely proportional to the square of their diameters
- Wear
- Frictional power loss
- Improves the efficiency of the chain drive
- All of these.
- Thick lubrication bearing
- Thin lubrication bearing
- Rolling or ball bearing
- None of the above
- Iron
- Steel
- Copper
- Lead
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