18 Questions
What is the symbol for reactive power, and in what unit is it measured?
Q, Volt-Amps-Reactive (VAR)
In a purely resistive circuit, what is the power factor?
1 (perfect)
What is the power factor for a purely inductive circuit?
0 (zero)
In a predominantly capacitive circuit, what happens to the true power?
Becomes zero
For a purely capacitive circuit, how does the power triangle look like?
Vertical line
What is the unit of measurement for apparent power, and what symbol represents it?
VA, S
In a series circuit, how are the components connected?
End-to-end in a line
What is the unit of measurement for the readiness with which a conductor transmits an electric current?
Mho or Siemens (S)
In a predominantly capacitive circuit, the power is:
Additive
According to Ohm's Law equations, what must be common to the same two points in the circuit?
Variables used
What is the total resistance in a parallel circuit?
RTotal = 1 / (1/R1 + 1/R2 + ... + 1/Rn)
What happens to the current in a series circuit when resistance is increased?
Current decreases
In a purely resistive circuit, what is the relationship between voltage and current?
Voltage and current are in phase
What happens to the power factor in a purely inductive circuit?
Power factor is 0
How is impedance managed in a purely capacitive circuit?
Impedances are added vectorially
In a predominantly inductive circuit, what happens to the power factor?
Power factor is lagging
What happens to the reactive power in a predominantly capacitive circuit?
Reactive power decreases
What is the relationship between true power and apparent power?
True power equals apparent power
Test your understanding of basic Electrical Engineering concepts with a focus on network analysis. Questions cover topics such as the algebraic sum of voltages in a loop and the sum of currents at a node.
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