Lesson 18 Flashcards
In a parallel RL circuit, the _________accross each branch is the same.
Voltage
The current through the resistive branch of a parallel circuit is_____
Degrees out of phase with the current through the inductive branch
90
In a series RL circuit, the vector sum of the currents equals the total current.
False
In a parallel RL circuit, the voltage across each branch is the same.
True
In a series RL circuit, power delivered by the source is _______power
Apparent
In a parallel RL circuit, to increase the impedence , you have to decrease the frequency.
False
What are 3 things needed to make AC power?
Magnetic field
Conductor
Relative motion
What is the power factor of a circuit that has 30* lagging inductive current behind the resistive current?
Cos (30) x 100 = 86.6%
Find I in a parallel RL circuit
It= square root of r squared + l squared
Find the angle theta
Cos-1 adj/hyp
In an inductive circuit the voltage _______ the current.
Leads
In a capacitive circuit the current_______ the voltage.
Lags
The true power is dissipated by the
_________ of any circuit.
Resistance
