1. The picture shown below is represents a mine equipment. Name the equipment

• Electric Rope Shovel
• Dragline
• Hydraulic shovel
• Grab Bucket Excavator

Solution

• Sannith
• Mining Machinery

2. A ________ is a storage reservoir under pressure where a liquid is held under pressure.

• hydraulic accumulator
• hydraulic crane
• hydraulic gear
• hydraulic pump

Solution

• Sannith
• Mining Machinery

3. Which of the following is a “Thermal Prime Mover”?

• Hydraulic turbines
• Tidal power
• Solar energy
• Wind power

Solution

• Sannith
• Mining Machinery

4. The power transmitted by belt drive depends on

• Belt velocity
• Initial belt tension
• Arc of contact
• All of these

Solution

• Sannith
• Mining Machinery

5. As compared to chain drive, belt drive transmits

• More power
• Less power
• Same power
• None of the above

Solution

• Sannith
• Mining Machinery

6. Due to slip of the belt, the velocity ratio of the belt drive

• decreases
• increases
• remains the same
• none of these

Solution

• Sannith
• Mining Machinery

7. The velocity ratio of two pulleys connected by an open belt or crossed belt is

• 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

Solution

• Sannith
• Mining Machinery

8. In roller chain, the rolling friction reduces ____

• Wear
• Frictional power loss
• Improves the efficiency of the chain drive
• All of these.

Solution

• Sannith
• Mining Machinery

9. Which bearing is Antifriction bearing

• Thick lubrication bearing
• Thin lubrication bearing
• Rolling or ball bearing
• None of the above

Solution

• Sannith
• Mining Machinery

10. A Shaft used in most of the Machinery is made of

• Iron
• Steel
• Copper
• Lead

Solution

• Sannith
• Mining Machinery