Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 4th Sem New 2142201 Mining Machinery I Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2142201 Date: 12/12/2019
Subject Name: Mining Machinery-I
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Explain the working principle of gravity haulage. 03
(b) Write a short note on low profile dumper. 04
(c) A locomotive weighs 20 tonnef and the co-efficient of adhesion is
0.228. (a) What is the adhesion to the track, and (b) What is the draw-
bar pull on (i) a level track, (ii) an adverse gradient of 1 in 100, and
(iii) an adverse gradient of 1 in 10. Assume the running resistance of
the loco is 69 N per tonnef.
07
Q.2 (a) Write the applications of shuttle car. 03
(b) Classify the principle types of mechanical brakes used for mining
machineries. Explain any one.
04
(c) Explain the application of over head trolley wire locomotive. 07
OR
(c) Write a note on exhaust conditioner and flame trap used in diesel
locomotive.
07
Q.3 (a) Write the uses of wire ropes. 03
(b) Name the principle types of conveyors and also explain the tensioning
arrangement of belt in conveyor.
04
(c) Describe different safety devices used in haulage system in U/G mines. 07
OR
Q.3 (a) Write the functions of the following:- (i) Back catch (ii) Stop ? block
(iii) Backstay.
03
(b) Explain the applications of tubs and mine cars in U/G mine. 04
(c) Write a note on pipe line and distribution of compressed air. 07
Q.4 (a) Name the different types of wire ropes. Explain the construction of any
one.
03
(b) Write a short note on scraper chain type conveyor. 04
(c) Name different rope capels used in underground mines. Explain any
one.
07
OR
Q.4 (a) Write a short note on gage selection of haulage track. 03
(b) Explain the application of rope capels and process of rope capping. 04
(c) Name different rope haulage systems. Explain the main and tail with
neat sketch.
07
Q.5 (a) Describe the functions of tail end of conveyor. 03
(b) Write the essential conditions of good haulage track. 04
(c) Explain the rope tensioning arrangement of aerial ropeway. 07
OR
Q.5 (a) What do you mean by rope splicing? 03
(b) Write the advantages and disadvantages of endless haulage. 04
(c) Write a note on construction and installation operation of aerial
ropeways.
07
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This post was last modified on 20 February 2020