Question 1027 of 844 · Washington 01 Journey Level Electrician Exam
In the United States, the standard frequency of the utility supply is:
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 1027
- C: 60 hertz
Explanation
Utilities in the United States supply alternating current at 60 hertz, meaning 60 complete cycles per second. Many other countries use 50 hertz.
More questions: Definitions, Theory and Plans
- 1028The RMS (effective) value of an AC voltage is the value that:
- 1029A 120-volt RMS sine wave has a peak voltage of approximately:
- 1030Power factor in an AC circuit is the ratio of:
- 1031In a purely resistive AC circuit, such as an incandescent lamp, the power factor is:
- 1032In a circuit that is mainly inductive, such as a motor winding, the current:
- 1033In a circuit that is mainly capacitive, the current: