Question

Which relationship is true of power factor?

Question 1 options:

A)	The more resistive the total impedance, the closer the power factor is to 1.

B)	The power factor is the ratio of the total power in a circuit to the circuit current.

C)	The power factor will be lagging in a capacitive circuit.

D)	The more resistive the total impedance, the closer the power factor is to 0.

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Question 2 (1 point)

For a purely resistive element, the voltage and the current through the element are in phase.

Question 2 options:

	True
	False

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Question 3 (1 point)

For an inductor the voltage lags the current through it by 90 degrees.

Question 3 options:

	True
	False

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Question 4 (1 point)

The voltage across a 100 mH coil is v = 100 sin 50t. Which of these expressions describes the current?

Question 4 options:

A)	20 sin 50t

B)	2000 sin(50t - 90°)

C)	20 sin(50t + 90°)

D)	20 sin(50t - 90°)

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Question 5 (1 point)

Unlike inductive reactance, capacitive reactance dissipates energy in the form of heat.

Question 5 options:

	True
	False

Answer 1