MATH FOR TEST 3 Flashcards by Haley Walker | Brainscape

Q

direct system (tpm)

A

t=TM/ sqrt(ntex)

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Q

indirect system (tpi, tpm)

A

t=TM sqrt(N)

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Q

Contraction twist equation w yarn count

A

N2=N1(1-%C)

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Q

Contraction twist w linear density

A

n2=n1/(1-%C)

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Q

Contraction twist w twist density

A

t2=t1/(1-%C)

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Q

Winding velocity

A

(b-f)(pid)

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Q

WV B

A

bobbin speed in revs/min

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Q

WV f

A

flyer speed in revs/min

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Q

b-f WV

A

winding speed in revs/min

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Q

productivity on roving frame

A

Ufly* E/ 504TM(ne^1.5)

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Q

ringing spin twist

A

spindle speef(rev/min)/ delivery speed (m/min)

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Q

ringing spin productivity

A

p= UspE/ 504TM*N^1.5

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Q

Winding count

A

1/Neq= 1/n1+1/n2+1/n3

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Q

machine twist in tpi

A

usp/ vfr

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Q

twist gear

A

TK/t

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Q

frame number

A

machine requirement/p

Q

time

A

machine requirement/p

Q

tm2

A

t2/sqrt(n2)

Q

t2

A

t1/1-%c

Q

Vfr

A

ufly/t1

Q

%C

A

1- t1/t2