Question 1
What is the primary purpose of a step-down distribution transformer in a low-voltage system?
Question 2
What is the basic unit of electrical current?
Question 3
What is the standard power frequency used in Canadian residential and commercial electrical systems?
Question 4
Which type of DC motor is most susceptible to runaway if the field circuit is opened?
Question 5
In a 3-wire DC system, the neutral carries:
Question 6
In a 3-wire DC generator system, if the neutral opens while the load is unbalanced, what is the result?
Question 7
What is the standard power frequency used in most Canadian residential electrical systems?
Question 8
Which meter setting should be used to safely verify that a 120 volt branch circuit is de-energized before working on it?
Question 9
Which meter function is used to safely check for voltage on a branch circuit?
Question 10
Which of the following describes the electrical effect of **capacitance** in an AC circuit?
Question 11
In a typical US dwelling, what frequency is the alternating current (AC) supplied by the utility?
Question 12
What is the typical frequency of AC power supplied to homes in the United States?
Question 13
What is the standard frequency of AC power in the United States?
Question 14
What is the phase angle difference between voltage and current in a purely resistive circuit?
Question 15
In a 3-wire DC circuit, the neutral conductor carries:
Question 16
A sine wave has a peak voltage of 170V. What is the RMS voltage?
Question 17
If the RMS voltage is 120V, which value represents the Peak voltage?
Question 18
In an AC circuit, if the frequency is 60 Hz, what is the period (time for one cycle)?
Question 19
What is the standard frequency of AC power systems in the United States?