What disadvantage is there in using an electromagnetic chuck?

A) It requires a very dense pole piece arrangement to be effective
B) Heat is generated and must often be compensated for
C) It must be used dry to avoid shock hazard
D) None, it is always advantageous


B

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A common audible signal is a(n) _____.

a. flashing caution light b. blinking LED c. equipment back-up alarm d. safety sign warning that hearing protection is required

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Five characteristics routinely tested by seed companies and state seed labs are ________, ________, ________, ________, and ________.

Fill in the blank(s) with the appropriate word(s).

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Which of the following is a white tapelike substance used to lubricate the thread connections of a male pipe thread?

a. Pipe dope b. Oil c. Sealant compound d. Teflon® tape

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Most pumps used in piping systems are of the  _____ type.?  

A. circulating? B. centrifugal? C. suction? D. discharge?

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