Question 1 of 10
In a DC circuit, what is the inductive reactance?
Inductive reactance is zero in DC circuits because the current is constant and there is no change in current with respect to time.
Question 2 of 10
Can the power factor be improved in a DC circuit using capacitors?
The power factor in a DC circuit is always 1, so there is no need for improvement.
Question 3 of 10
Kirchhoff's laws are useful for determining:
Kirchhoff's laws can be used to analyze complex circuits to find current, voltage, and power.
Question 4 of 10
Cramer’s rule is used to solve:
Cramer's rule is a method for solving systems of linear equations using determinants.
Question 5 of 10
What is the power formula in DC circuits?
Power in a DC circuit is calculated by multiplying voltage (V) and current (I).
Question 6 of 10
In a DC circuit, how is the power factor calculated?
In DC circuits the phase angle ? is 0, therefore power factor Cos ?= 1.
Question 7 of 10
What are the common tools for DC circuit analysis?
Ohm's Law, Kirchhoff's laws and Cramer's Rule are tools for DC circuit analysis.
Question 8 of 10
What is the relationship between current and voltage in a DC circuit?
In DC circuits, voltage and current are always in phase with each other.
Question 9 of 10
Which of the following components does not affect DC circuits?
Inductors have no effect on a steady-state DC circuit.
Question 10 of 10
In a DC circuit, what happens to the current when resistance increases (assuming voltage is constant)?
According to Ohm's Law, current is inversely proportional to resistance.
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