Lesson 18

Question 1

In a parallel RL circuit, the _________accross each branch is the same.

Answer 1

Voltage

Question 2

The current through the resistive branch of a parallel circuit is_____
Degrees out of phase with the current through the inductive branch

Answer 2

90

Question 3

In a series RL circuit, the vector sum of the currents equals the total current.

Answer 3

False

Question 4

In a parallel RL circuit, the voltage across each branch is the same.

Answer 4

True

Question 5

In a series RL circuit, power delivered by the source is _______power

Answer 5

Apparent

Question 6

In a parallel RL circuit, to increase the impedence , you have to decrease the frequency.

Answer 6

False

Question 7

What are 3 things needed to make AC power?

Answer 7

Magnetic field
Conductor
Relative motion

Question 8

What is the power factor of a circuit that has 30* lagging inductive current behind the resistive current?

Answer 8

Cos (30) x 100 = 86.6%

Question 9

Find I in a parallel RL circuit

Answer 9

It= square root of r squared + l squared

Question 10

Find the angle theta

Answer 10

Cos-1 adj/hyp

Question 11

In an inductive circuit the voltage _______ the current.

Answer 11

Leads

Question 12

In a capacitive circuit the current_______ the voltage.

Answer 12

Lags

Question 13

The true power is dissipated by the

_________ of any circuit.

Answer 13

Resistance