Loads
What are 3 types of loads
Resistive, inductive and capacitance
What do like pole do?
What is repel each other
AC power can be converted to DC power through use of components called
What is Rectifiers
What is capacitive reactance?
What is Capacitive Reactance is a term used to describe a capacitor’s opposition to alternating current
Where is Single-phase AC power is used:
What is In both residential and commercial buildings.
What does a resistive load do?
What is Converts electricity into heat
The invisible lines of force coming from a magnet are referred to as _____?
magnetic flux
Most HVACR systems operate on:
Alternating current
How are capacitors broadly categorized?
What is Capacitors are broadly categorized as either polarized or non-polarized and variable
Where is Three-phase AC power is used:
What is Only in commercial buildings.
What do inductive loads do?
Convert electricity into magnetism
What does a transformer use to transfer energy from the primary winding to the secondary winding
magnetic induction
Battery-powered devices operate on:
Direct Current
How does a DC capacitor would differ from an AC capacitor
What is DC capacitors have positive + and negative – terminals and must be connected to the circuit with the proper polarity.
What type of configurations are 3 phase transformer available in?
What is Delta and Wye configurations
What is an example of a resisitive load
What is a strip heater or light
Explain the left-hand rule for flux direction in conductors.
What is The left-hand rule is used to determine the direction of rotation of the flux around the conductor.
A transformer uses this electrical principle to increase or reduce voltage with no moving parts or contacts.
Induction
What are the two types of transformers?
What is step-up and step-down transformers
The electrical power supplied to houses is usually
What is 240 V, single-phase power.
What is an example of an inductive load?
How can the magnetism produced by a flowing electrical current be intensified enough to produce useful work?
What is Coil the conductor around a core of soft iron or steel.
What is the normal frequency of AC power in the United States?
What is 60 cycles per second?
What is the construction of a capacitor.
What is A layer of insulation between two layers of metal
Why is single-phase power used for most HVACR residential and light commercial systems?
What is Single-phase power is more readily available than three phase power. Because of the popularity of single-phase power, a larger variety of equipment types and sizes are available.