HVAC Final Exam 7 Correct Questions & Answers(RATED A+)

AC is an electron flow that _________________________ - ANSWER alternates back and fourth The ______ is often used as a graphical representation of alternating current - ANSWER sine wave when a conductor rotates through one complete revolution it has generated _____ flow reversals - ANSWER two the __________of alternating current is the number of complete cycles that occur in a second. - ANSWER frequency Alternating current reaches a peak at ________________ electrical degrees - ANSWER 90 the ________ voltage of an alternating current circuit is 0.707 at its highest voltage. - ANSWER effective All electric meters are calibrated to ______________________ voltage and amperage - ANSWER read effective Alternating current is produced by a(n) _________________ - ANSWER alternator A set of windings is called the ____________ - ANSWER stator the ratio between the true power and the apparent power is called the _____________ - ANSWER power factor When DC was used to supply consumers with their electrical needs _____ - ANSWER it had many disadvantages Any domestic appliance that operates on 120 volts is ____________________ equipment - ANSWER single phase The only disadvantage of three phase system is the _________ electric panels and distribution equipment - ANSWER higher cost of the Higher-voltage systems are used mostly in _____________________________ structures - ANSWER industrial Alternating current is ________ - ANSWER electrons reversing their flow at various intervals ____