____ damage occurs when continual impacting forces (such as vibrations) are passed from one ring to the other, through the rolling elements, when there is no rotation of the shaft.
A. External
B. False Brinell
C. Spalling
D. Excessive
Answer: B
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a. A through hole with a counterbore
b. A blind hole with a spotface
c. A through hole with a countersink
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Indicate whether the statement is true or false.
How is fuel filter efficiency rated?
A. Maximum flow rate. B. Entrapment capability in microns C. Service life expectations. D. Maximum pressure rating in psi.
Which of the following is an NEC® requirement for grounding and bonding?
a. The path to ground from circuits, equipment, and metal enclosures shall be continuous. b. The path to ground from circuits, equipment, and metal enclosures shall have sufficiently high impedance to facilitate the operation of protective devices. c. The path to ground from circuits, equipment, and metal enclosures shall rely on the earth as an effective ground fault current path. d. The path to ground from circuits, equipment, and metal enclosures shall be capable of safely carrying twice the maximum current of the system.