Mining Machinery Questions and Answers - 4

1. what is the main purpose of jazz rail on underground haulage track

1. to provide smooth running of tubs
2. to avoid derailment of tubs
3. to avoid or speeding
4. to maintain good alignment of track

2. which of the following action is observed in shaker conveyor

1. frictional motion
2. cradle movement
3. jigging movement
4. quick forward and slow backward movement

3. how do you achieve "trough shape" in a belt conveyor

1. woven fabric
2. steel cable layering
3. Idler set
4. loop-take-up

4. which of the following seems to be the better location of installing drop-war-Wick?

1. at mine entrance
2. at district entrance
3. at places where inclination is very high
4. just above maindip

5. which of the following gear is suitable for cable belt conveyor

1. differential gear
2. rack and pinion gear
3. bevel gear
4. helical gear

6. method of joining two wire ropes permanently without using special fittings or attachments is known as

1. rope splicing
2. laying of wires
3. vulcanizing
4. pre-stressing

7. which of the following has little or no bearing on the carrying capacity (tph) of belt conveyor?

1. belt speed
2. mineral size
3. trough angle
4. belt width

8. in endless scraper chain conveyor after every three to four links there is one very important item is provided what is that item

1. flight
2. shear pin
3. sprocket
4. trough

9. which of the following has low FOS and not suitable for shock load or too heavy load

1. SSC
2. IWRC
3. fibre core
4. Central core

10. which of the following serves as fire-resistant material in belt conveyor

1. polymeric compound
2. neoprene
3. ammonia
4. brine solution