Alternating current is produced by a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).
alternator
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Which type of motor has end bells that are open to allow free circulation of ventilation air?
a. hermetic b. open c. totally enclosed d. splash proof
Fully describe the welds required to join part number 1 to part number 4.
Refer to the girder brace in Drawing Number W11784S R1.
Answer the following statement(s) true (T) or false (F)
1. The metering facilities for electrical space-heating equipment as well as electric water heaters are standardized throughout the country. 2. The Code ® requires installation of a separate 20-ampere circuit for the laundry outlets. 3. The Code® requires the grounding of interior alternating current systems where the system can be grounded so that the maximum voltage to ground on the ungrounded conductors does not exceed 100 volts. 4. Proper bonding ensures a low impedance path to ground should a fault occur on any of the service-entrance conductors.
Why are heated diode leak detectors better than corona discharge leak detectors?
A) Heated diode leak detectors are less expensive to replace. B) Heated diode leak detectors use infrared lights in leak detection. C) Heated diode leak detectors can detect greater amounts of coolant. D) Heated diode leak detectors are not as prone to false alarms.