Which of the following is not one of the four common core types used for hardwood plywood?
A) Softwood core B) Low-density fiberboard
C) Hardwood core D) Hardboard core
B
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Conductive optical fiber cables _________ occupy the same raceway or cable tray with those of Class 1 circuits
. A. Shall be permitted to B. Shall not be permitted to C. Should always D. Used for communication circuits
The faster a wheel rotates, the higher the frequency produced by a wheel speed sensor
Indicate whether the statement is true or false
What problems can be caused by overlubricating a blower motor?
A) It is not possible to overlubricate a motor. B) This could eventually cause the motor windings to short out. C) The motor would run more effectively with the extra lubrication. D) The blower motor could run faster than specifications recommend.
The NEC® requires motor disconnecting means be _____
a. 8 feet or more above the floor b. within sight of the controller location c. guarded d. installed so access is limited to qualified persons