Cleaning efficiency of the opening roller in a rotor spinning machine, having 56 mm diameter rotor, is 80 %. The yarn breaks when the trash deposition within the rotor groove crosses the threshold of 1 mg/mm. If a sliver with 0.4 % trash is fed at 7.5 g/min, the number of end breaks in 1 hr (to the nearest whole number) is ________.

Cleaning efficiency of the opening roller in a rotor spinning machin

1.	Cleaning efficiency of the opening roller in a rotor spinning machine, having 56 mm diameter rotor, is 80 %. The yarn breaks when the trash deposition within the rotor groove crosses the threshold of 1 mg/mm. If a sliver with 0.4 % trash is fed at 7.5 g/min, the number of end breaks in 1 hr (to the nearest whole number) is ________.
A.	1
B.	2
C.	3
D.	4
Answer» C. 3

Discussion

No Comment Found

Related MCQs

Consider the following assertion [a] and reason [r] and choose the most appropriate answer  [a] Heat setting increases the dimensional stability of synthetic fabrics  [r] The free energy reduces as a result of heating
Consider the following assertion [a] and reason [r] and choose the most appropriate answer  [a] In false-twist friction texturing, the ratio of input to output tension is kept close to one  [r] Broken filaments and tight spots are within the acceptable limits at this condition
Consider the following assertion [a] and reason [r] and choose the most appropriate answer  [a] Sodium cellulose xanthate formation is an essential unit operation in the production of viscose rayon  [r] It helps to reduce the degree of polymerization of cellulose
Consider the following assertion [a] and reason [r] and choose the most appropriate answer  [a] Nylon 6 is polymerized using only single monomer caprolactum  [r] Synthesis of Nylon 6 is basically an addition polymerization
The particular integral of d2y/dx2 + 5 dy/dx + 6y = e2x is
 In a card the probability of fibre transfer from cylinder to doffer in one revolution of cylinder is 0.2. The probability that a particular fibre will be transferred to the doffer within the first three revolutions of cylinder is _______.
Out of 100 textile companies, 10 companies are involved in spinning, weaving and chemical processing, 25 companies are involved in spinning and chemical processing, and 30 companies are involved in weaving and chemical processing. If 65 companies are involved in chemical processing, the number of companies involved ONLY in chemical processing is_______.
The strength of 100 g/m2 fabric obtained by testing 4 cm wide strip is 0.4 kN. The tenacity (cN/tex) of the fabric is ______.
A loom is producing 2 m wide grey fabric with 8% weft crimp. Assuming that the loom is running at 570 rpm with 90% efficiency, the weft consumption in kg/hr of 30 tex yarn will be _______.
On twisting, the denier of a multifilament yarn consisting of 300 filaments of 3 denier each becomes 1100. If 11 km of untwisted filament yarn is twisted, its length in km will be __________.

Discussion

No Comment Found

Related MCQs

Reply to Comment