Visvesvaraya Technological University (VTU) 2006 B.E Mechanical Engineering MINE MACHINERY 1 - exam paper

Visvesvaraya Technological University
III Sem B E exam
MINE MACHINERY-I
MODEL ques. PAPER
Time: three Hrs.] [Max. Marks: 100
Note: 1. ans any 5 ques. out of 8 ques..
2. ans at lowest 2 from Part-A and 2 ques. from Part-B.
3. Draw neat diagrams wherever necessary.
4. All ques. carry equal marks.
PART-A
1. (a) How power is generated using compressed air for underground mine working?
(10 marks)
(b) How power is generated using steam for winders. (10 marks)
2. (a) Draw a neat sketch of pneumatically operated air leg and discuss the
Construction and working principle. (10 marks)
(b) define with a neat sketch, the working of a jack hammer. (10 marks)
3. (a) elaborate the Techno-Economic indices of mine transportation? (8 marks)
(b) discuss any 2 methods of Rope haulages used in coal mines, with their
applications and limitations? (12 marks)
4. (a) discuss briefly the procedure of attaching a rope to the Reliance capel.
(8 marks)
(b) What is rope splicing? discuss in detail the procedure for rope splicing. (12 marks)
PART-B
5. (a) discuss briefly battery charging room with suitable sketch. (8 marks)
(b)Explain briefly Diesel Locomotive, with its application, limitation, advantages &
disadvantages. (12 marks)
6. (a) discuss with a neat sketch the tensioning arrangements made on a trunk belt
conveyor. (10 marks)
(b) discuss how material is transported using High angle conveyor, with a sketch.
(10 marks)
7. (a) discuss briefly the kinds of winding drums used in mining Industry. (8 marks)
(b) discuss briefly the Koepe System of winding with a neat sketch. (12 marks)
8. (a) discuss with a neat sketch loading & unloading arrangement for skip winding.
(10 marks)
(b) obtain out the static torque at the beginning, middle and at the end of the wind
when every cage weighing 10 tonnes, carries six tubs taring 0.5 tonnes and
holding one tonne of coal, take drum diameter to be 2.5 m and the depth of the
shaft is 1000 m. the rope weigh 10 tonnes. (10 marks)
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USN

Earning:   Approval pending.