Veer Narmad South Gujarat University 2010-3rd Sem B.E Yarn Manufacturing - 1 - 2 ( ) ( T.T ) - Question Paper

Time : 3 Hours]    [Total Marks : 100

RN-6301

B. E. II (Sem. Ill) (T.T.) Examination May/June - 2010 Yarn Manufacturing - I

Instruction :

(1)

M miRsi    Ppidi    <hh41.

Fillup strictly the details of signs on your answer book.

Name of the Examination :

B. E. 2 (Sem. 3) (T.T.)

Name of the Subject:

Yarn Manufacturing - 1

I 6 II 3 II 0 II 1 I ^_econ N- (1.2,.....) :| 1&2 |

(2)    Answers to the two sections must be written in separate answer books.

(3)    Figures to the right indicate full marks.

(4)    Tie two sections separately.

SECTION - I

Ql.[a] Answer the following :

1.    State the objects of Blow room.

2.    Explain the term Blending with example. Why blending is carried out?

3.    What is Trash? What it is composed of?

4.    What is the weight of standard India cotton Bale ?

5.    Which mechanism controls the evenness of Lap in Blow room?

6.    For Manmade fibres , more number of cleaning points should be used. True or false.

7.    What is the function of Calender rollers in Blow room?

Ql. [b] With a neat sketch , describe the construction & working of Knife roller Gin.

Q2 Explain the construction & working of following machines briefly with suitable [15] sketch:

1.    ERM cleaner

2.    Step cylinder cleaner

3.    Hopper Bale opener

OR

Q2.[a] Describe the important stages of Automatic Lap doffing with neat sketch.    [12]

[b] Calculate Production of Blow room in terms of Kgs/ Shift / Scutcher, if the delivery [3] speed is lOflinch/min , hank of lap is 0.0014 and efficiency is 80%.

Q3 Write Short Notes [ ANY THREE 1

1    Karousal Bale opener

2    Advantages of Automatic Bale Opener

3    Multimixer

4    Ancillary equipments used in Blow room.

SECTION -11

[a] Do as directed: 1. In the high production card metallic clothings are used. (State true/false). [1] 2. Sweep gauge is used for setting of licker-in and licker-in undercasing. (State true/false). [1] 3. When two high nroduction card units are joined , it is called as card. [1] 4. Find out Draft on carding machine if lap hank is 0.0015 and sliver hank is 0.15. [2] [b] Explain advantages and disadvantagws of chute feed system over lap feed system. [06J [b] What is autoleveller? Explain open loop principle of autoleveller. [05] [c] Discuss in detail objects of carding machine. [04]

Q5 .[a]	Derive a formula to find out intensity of card assuming suitable data.	[081
[b]	Explain dustless stripping with neat sketch.	[07]
	OR
Q5 [a]	Explain with neat sketch any grinding instrument used for grinding operation on	[07]
	carding machine.
[b]	Describe anv two developments in card web doffing svstem with neat sketches.	[08]

Q6 Write Short Notes [ ANY THREE 1    [15]

1.    Web defects and remedies

2.    Features of high production card

3.    Metallic card clothing

4.    Importance of card setting and factors affecting it.

RN-6301]    2    [ 100 ]

Attachment: veer-narmad-south-gujarat-university-2010-b-e-28357-1.pdf

Earning:   Approval pending.