Cables installed in or under metal-corrugated sheet roof decking are required to be installed and supported so there is not less than __________ measured from the lowest surface of the roof decking to the top of the cable or raceway.
Fill in the blank(s) with the appropriate word(s).
1-1/2 inches (38 mm)
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Revenue generated by the enviromental services industry in the United States is expected to continue growing at a rate of _____
a. 1% b. 5% c. 10% d. 7%
Which of these should be used when preparing a vehicle for service?
A) A steering wheel cover B) Surgical boots C) A windshield cover D) Elbow protection pads
The greatest difference between relays and contactors is the fact that contactors are equipped with large contacts that are intended to connect high-current loads to the power line.
Answer the following statement true (T) or false (F)
An AC induction machine has six poles and is designed for 60-Hz, 240-V (rms) operation. When the machine operates with 10 percent slip, it produces 60 N-m of torque.
a. The machine is now used in conjunction with an 800-W constant power load. Determine the speed and slip of the machine when used with the above-mentioned load. b. If the machine has an efficiency of 89 percent, what minimum rms current is required for operation with the load of part a? (Hint: You may assume that the speed torque curve is approximately linear in the region of interest.)