Download GTU B.Tech 2020 Winter 5th Sem 3152201 Mine Machinery Ii Question Paper

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Subject Code: 3152201

GUJARAT TECHNOLOGICAL UNIVERSITY

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Instructions:

1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Define: MARKS

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1. Head
2. Air vessel
3. Snoring

(b) Classify different types of mine pumps. 04

(c) Using a neat labeled diagram explain the construction features and working of a centrifugal pump. 07

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Q.2 (a) Classify mine winders in detail. 03

(b) Draw torque-time diagram of: 04

1. Balanced cylindrical drum winder with tail rope
2. Balanced cylindrical drum winder without tail rope

(c) Name the types of electric braking used on winders. Explain regenerative braking. 07

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Q.3 (a) Draw and explain the construction features of headgear. 03

(b) Give the advantages of multirope winding. 04

(c) Explain drum winding in detail. 07

Q.4 (a) Classify mechanical loaders. 03

(b) Write a note on safety arrangements used in winding. 04

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(c) Compare drum winding and Keepe winding. 07

Q.5 (a) Explain creepers and tipplers. 03

(b) Write a note on tensioning arrangement of belt conveyor. 04

(c) Explain the working of continuous miner. 07

Q.6 (a) Classify pit top-and pit bottom layouts. 03

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(b) Explain types of guides. 04

(c) Explain run round arrangement using a neat diagram. Also give its advantages and disadvantages. 07

Q.7 (a) Briefly explain types of cages used in underground mines. 03

(b) Classify conveyors. 04

(c) Using a neat diagram explain the construction of belt conveyor. 07

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Q.8 (a) Write a note on gathering arm loader. 03

(b) Write a note on stage loaders. 04

(c) Explain types, construction and working of shearer using labeled diagram. 07