D-4 Analyze Single Phase AC Circuits Flashcards
Impedance ( Z ) Combination of ( R ) and ( XC ) measured in ___ is total opposition to current
Ohms
True Power ( P ) is the rate of doing work and is measured in ?
Watts
Reactive Power ( Q ) Rate of which energy is stored and returned to a circuit is measured in ?
Vars
Apparent Power ( S ) combination of P & Q is measured in ?
VA
Power factor is a ratio between ___
adj/hypotenuse
Adding resistors in series will cause he total circuit resistance to ?
Increase
What is the phase relationship between current and voltage in a resistive circuit ?
Current is In Phase with the Voltage
What is the power factor of a resistive circuit ?
1.0 100% unity
What is the relationship between power and apparent power of a resistive circuit ?
power = apparent power
Adding inductors in series will cause the total circuit inductance to ?
Increase
If the inductance of a circuit is increased then the total current will?
Decrease
What is the phase relationship between current and voltage in an inductive circuit?
the current Lags the voltage
what is the power factor of a purely inductive circuit ?
0.0
relationship between reactive power (Q) and the apparent power (S) in a purely inductive circuit ?
reactive power = apparent power
Adding capacitors in series will cause the total capacitance to ?
Decrease
increasing the capacitance in a series circuit will cause the capacitive reactance to?
Decrease
If the capacitance of a series capacitive circuit is decreased then the total current with ?
Decrease
What is the phase relationship between current and voltage in a purely capacitive circuit ?
The current Leads the voltage
Power factor of a capacitive circuit?
0.0
What is the relationship between the reactive power and the apparent power in a capacitive circuit?
reactive power = apparent power
