Mining Machinery Questions and Answers - 3

1. Flight bar is the component of?

1. Road header
2. AFC
3. Shield Support
4. DERDS

2. Cowl is the component of?

1. DERDS
2. Road header
3. Shield Support
4. AFC

3. Leminscate is the component of?

1. Shield Support
2. DERDS
3. Road header
4. AFC

4. Water will not be delivered by a centrifugal pump due to

1. too low discharge head
2. lack of priming
3. wrong direction of rotation
4. partial obstruction at discharge outlet

5. Axial thrust in a turbine pump acts

1. from suction side to delivery side
2. from delivery side to suction side
3. perpendicular to pump shaft
4. in the delivery pipe

6. Function of snub pulley in the belt conveyor system is

1. cleaning device
2. safety device
3. increasing the angle of wrap
4. braking device

7. Function of rotary brush in the belt conveyor system is

1. Cleaning device
2. safety device
3. increasing the angle of wrap
4. braking device

8. Function of pull cord in the belt conveyor system is

1. cleaning device
2. safety stopping device
3. material discharging on the side of the belt
4. increasing the angle of wrap

9. In a cable belt conveyor, the function of the cable is to

1. increase the lateral stiffness of the belt
2. support and provide motion to the belt
3. minimize elongation of the belt under tension
4. increase the tensile strength of the belt

10. In a belt conveyor system, function of the snub pulley is to

1. increase the angle of contact of belt with drive drum
2. clean the inner surface of the belt
3. clean the outer surface of the belt
4. decrease the belt tension