Which of the following categories of pipe is black pipe?
A) Gold pipe B) Aluminum pipe C) Iron pipe D) Copper pipe
C
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When material bends, this occurs on the outside of the bend.
a. compression b. stretching
?What effect does the swirling of the plasma gas have?
A. ?Centrifugal force causes the stream to spread out or even causes it to go off. B. ?The wider plasma arc is best used for gouging. C. ?It causes the sparks to spin outward scattering them around the shop floor. D. ?It causes the stream to become more dense.
Which of the following should never be worn by someone applying chemicals?
a. rubber gloves c. leather shoes b. safety goggles d. respirator
The hysteresis loss in a transformer is ________
A) caused by current flowing in the core B) caused by the resistance of the wire C) another name for flux leakage loss D) caused by rapid reversal of the magnetic field