The voltage between any leg of a 480 Wye transformer and ground is:
A) 120 volts. B) 277 volts. C) 208 volts. D) 240 volts.
B
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Además del NEC®, la energía eléctrica de emergencia para hospitales es regida por la:
a. National Hospital Association (Asociación Nacional de Hospitales). b. Joint Commission (Comisión Conjunta). c. American Medical Association (Asociación Médica Estadounidense). d. Medicare Commission (Comisión de Medicare).
?When there is a spiral gear on the camshaft of a pushrod engine, what is its purpose?
A. ?It drives the distributor. B. ?It drives the oil pump. C. ?Both of the above D. ?Neither of the above
For what reason are Category II and Category III furnaces rare?
A) The temperature of the system makes it hard to repair. B) These furnaces are not reliable and require more maintenance. C) These furnaces are no longer manufactured. D) The venting system is made of a material that is no longer available.
The asynchronous inputs are normally labeled ________ and ________, and are normally active ________ inputs
A) START, STOP, low B) PRE, CLR, low C) ON, OFF, high D) SET, RESET, high