Reactive Power

What is reactive power measured in?

• VAR (Volt-Amps Reactive)

• Watts

• Ohms

• Amps

What type of components release and store reactive power?

• Capacitors and Inductors

• Transistors

• Diodes

• Resistors

What is the operating principle of a transformer?

• Electromagnetic induction

• Direct current

• Mutual induction

• Electrostatic discharge

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What does a capacitor do?

• Increases voltage

• Converts AC to DC

• Stores energy in the form of an electric charge

• Generates electrical energy

Tags

NGSS.HS-PS2-5

What symbol represents reactance?

• R

• C

• L

• X

What causes reactive power?

• Static electricity

• Resistive loads

• Inductive and capacitive loads

• Direct current

What is the phase angle between voltage and current in a purely resistive circuit?

• 0 degrees

• 90 degrees

• 180 degrees

• 45 degrees

What is the power factor when voltage and current are in phase?

• Undefined

• 0.5

• 1

• 0

How is true power measured?

• Watt-meter

• Volt-meter

• Ammeter

• Multimeter

What happens to power in a reactive circuit when voltage and current are 90 degrees out-of-phase?

• No power is consumed

• Power is halved

• Power is doubled

• Power is quadrupled