INTRODUCTION - 5 - MILKING UNIT_Liners

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* 1. Enter your First and Last Name

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* 2. Teatcup liners are the only parts of the machine that touch the teats of the cows.

True

False

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* 3. Natural rubber liners have a life of _____ milkings.

600-800

2500

3000-5000

400-500

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* 4. Physical changes in liner properties affect milking characteristics.

True

False

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* 5. A wide-bore liner is

>21 mm

18-30 mm

>24 mm

22-26 mm

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* 6. U.S. liners have the smallest mid-barrel bore, upper barrel bore, mouthpiece cavity height, lowest mid-barrel to mouthpiece lip diameter ratio, which serves to

Minimize teat congestion

Minimize slip and fall-offs

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* 7. Liner design involves ______.

infinite time

compromise

no effort at all

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* 8. Effective liner length is

80-154 mm

70-144

90-164 mm

60-134