Download GTU BE/B.Tech 2019 Winter 7th Sem New 2172903 Production Planning And Maintenance Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 7th Sem New 2172903 Production Planning And Maintenance Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2172903 Date: 26/11/2019

Subject Name: Production Planning & Maintenance
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.
MARK
Q.1 (A) Convert 100 tex to Ne and Nm 3
(B) Discuss about different types of maintenance & its importance. 4
(C) Calculate required no of ring frame and speed frame spindle for the production of
2500 kg yarn of 40's combed. Where ring frame spindle speed 19500 rpm, time 8 hrs,
waste 3%, t.p.i-25, draft 22, efficiency 90%. For speed frame flyer rpm 1400
efficiency 85% & tpi 1.3
7
Q.2 (A) Write production formula for modern comber in lb/day. 3
(B) It is required to produce 8000 kg of combed yarn of 50's ne. Calculate total raw
cotton required for the same.
4
(C) Twill woven fabric need to prepare of about 2000 meter length. Where EPI & PPI are
40 & 30.warp and weft count is 30's, warp and weft crimp 6%. Calculate weight of
warp and weft required for this lot if reed width is of 48 inch.
7
OR
(C) A comber machine running at 425 nips/min, with feed/nip of 7 mm. calculate no of
comber required for a 5000 lb/shift. Consider lap hank of 0.0125 and noil % of 10.
Efficiency of machine is 80%
7
Q.3 (A) Discuss key routine maintenance points for winding machine 3
(B) An air jet loom running at 900 rpm for 22 picks variety. Calculate time required to
weave 3000 meter of fabric on a loom with 85% efficiency.
4
(C) Calculate the number of water jet weaving machines to be installed to match with the
production capacity of a yarn preparatory unit having 9 texturing machines each
having 120 spindles and running at 1100 mts/min with 94 % efficiency. These water
jet weaving machines are running at 700 rpm with 95 % efficiency and fabric having
reed/pick of 30/20, 62 inches width and using 240 denier of yarn as warp & weft.
7
OR
Q.3 (A) Enlist daily & weekly maintenance check points for ring frame 3
(B) A carding machine running at 100 doffer rpm with 90% efficiency. Sliver hank 0.15.
Calculate production in kg/day
4
(C) Prepare spin plan and production schedule for the 1000kg/shift rotor yarn of 16's ne.
Consider suitable data for a modern machine combination.
7
Q.4 (A) Calculate total number of ends and picks for a fabric having following details :
? Reed / Pick ? 60/362,
? Fabric Length ? 4000 Meters,
? Fabric Width ? 56 Inches
3
(B) Prepare warp and weft production schedules if the weights of warp and weft are
40000 kgs and 30000 kgs respectively. Assume modern sequence of machines.



4
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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2172903 Date: 26/11/2019

Subject Name: Production Planning & Maintenance
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.
MARK
Q.1 (A) Convert 100 tex to Ne and Nm 3
(B) Discuss about different types of maintenance & its importance. 4
(C) Calculate required no of ring frame and speed frame spindle for the production of
2500 kg yarn of 40's combed. Where ring frame spindle speed 19500 rpm, time 8 hrs,
waste 3%, t.p.i-25, draft 22, efficiency 90%. For speed frame flyer rpm 1400
efficiency 85% & tpi 1.3
7
Q.2 (A) Write production formula for modern comber in lb/day. 3
(B) It is required to produce 8000 kg of combed yarn of 50's ne. Calculate total raw
cotton required for the same.
4
(C) Twill woven fabric need to prepare of about 2000 meter length. Where EPI & PPI are
40 & 30.warp and weft count is 30's, warp and weft crimp 6%. Calculate weight of
warp and weft required for this lot if reed width is of 48 inch.
7
OR
(C) A comber machine running at 425 nips/min, with feed/nip of 7 mm. calculate no of
comber required for a 5000 lb/shift. Consider lap hank of 0.0125 and noil % of 10.
Efficiency of machine is 80%
7
Q.3 (A) Discuss key routine maintenance points for winding machine 3
(B) An air jet loom running at 900 rpm for 22 picks variety. Calculate time required to
weave 3000 meter of fabric on a loom with 85% efficiency.
4
(C) Calculate the number of water jet weaving machines to be installed to match with the
production capacity of a yarn preparatory unit having 9 texturing machines each
having 120 spindles and running at 1100 mts/min with 94 % efficiency. These water
jet weaving machines are running at 700 rpm with 95 % efficiency and fabric having
reed/pick of 30/20, 62 inches width and using 240 denier of yarn as warp & weft.
7
OR
Q.3 (A) Enlist daily & weekly maintenance check points for ring frame 3
(B) A carding machine running at 100 doffer rpm with 90% efficiency. Sliver hank 0.15.
Calculate production in kg/day
4
(C) Prepare spin plan and production schedule for the 1000kg/shift rotor yarn of 16's ne.
Consider suitable data for a modern machine combination.
7
Q.4 (A) Calculate total number of ends and picks for a fabric having following details :
? Reed / Pick ? 60/362,
? Fabric Length ? 4000 Meters,
? Fabric Width ? 56 Inches
3
(B) Prepare warp and weft production schedules if the weights of warp and weft are
40000 kgs and 30000 kgs respectively. Assume modern sequence of machines.



4
2
(C) A textile mill wants to produce fabric of following particulars:-
Warp/Weft: 16s/16s Ne, EPI/PPI: 72/44, R.S.:- 157 cm, length wise contraction: 7%.
Find out GSM of fabric. Also work out requirement of warp and weft yarn per 100 m
of fabric.(ignore selvedge and waste)
7
OR
Q.4 (A) What will be the hank deliver on a lap former if sliver hank is of 0.17. Draft and
doubling are 1.3 & 18 respectively.
3
(B) Discuss key routine maintenance points for carding 4
(C) If the warping machine speed is 550 Mts/Min, using 32s yarn count and efficiency %
is 55, calculate the number of machines required to supply beams per month to the
sizing unit having 7 sizing machines. Assume set length of 25000 metres and 480
ends/beam on warping machine. Use following details for sizing machines :
? ends/beam ? 3200
? length of warp sheet per beam ? 350 mts
? speed ? 60 mts/min
? efficiency % - 50

Q.5 (A) What will be the length of yarn in a cotton yarn package weighing 3 kg, count of
yarn is 40's
3
(B) Calculate no of beams produced on a sizing machine in a shift from the following
data. Speed 50 mpm, effi:- 50%, no of ends/beam 2200, length of warp sheet/beam
250 meter.
4
(C) State the importance of maintenance in weaving department. Explain the daily,
weekly, monthly and quarterly/yearly check points for automatic weaving machines
in detail.
7
OR
Q.5 (A) Write production formula for a double-width high speed rapier loom. 3
(B) A set of 6 beam each containing 30000 meter of warp is to be prepared. If speed is
500 mpm & effi.-80%. Calculate a time required to prepare a set.
4
(C) Prepare warp & weft production schedules to produce 80,000 kgs of grey fabric per
day having following details :
? reed/pick ? 82/48
? warp/weft ? 30s/36s
? fabric width ? 42 inches
? weave ? 3/1 twill
7

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