Chapter 6
A device with a wire loop arrangement where the loop rotates within the magnetic poles.
WHAT IS A GENERATOR?
The opposition that results in resistance to current flow.
What is CAPACITIVE REACTANCE xc?
A single-phase AC motors widely used in residential and small commercial HVAC systems for fans, blowers, and pumps.
What IS A PERMANENT SPLIT CAPACITOR? (PSC)
A resistor that responds to temperature changes by altering its ohmic value.
What is a THERMISTOR?
I AM THE BLUE WIRE IN A THERMOSTAT BUNCH
What is COMMON?
A relay without moving parts, and instead senses changes in current and voltage to determine when to stop current flow between terminals.
What is AN ELECTRONIC STARTING RELAY?
Current that changes direction at a periodic rate.
WHAT IS ALTERNATING CURRENT(AC)?
A component that has the ability to store energy in the form of electrical charge.
What is a CAPACITOR?
A brushless motor that combine AC power input with integrated electronic controls.
What is an ELECTRONIC COMMUTATED MOTOR(ECM) ?
An electronic component that limits current flow.
What is a RESITOR?
WHAT 3 WIRES ARE NEEDED TO MAKE THE HEAT COME ON?
What is R/W/G?
A relay made with a low-resistance coil and a normally open set of contacts.
WHAT IS A CURRENT MAGNECTIC RELAY?
What is is the standard ac frequency in the US.
What is 60hz?
The unit for capacitance.
What is a A FARAD?
A low-cost single-phase AC motors with low starting torque.
What is a SHADED POLE MOTOR?
A three-layer device that consists of a collector, emitter, and base.
What is A BIPOLAR RESISTOR?
DBL PTS
I AM A THERMOSTAT YOU CAN CONTROL ALL AROUND THE WORLD WITH AN APP
What is A WIFI ENABLED TSTAT?
A rotor’s current maximum value. Also referred to as inrush or starting current.
What is LOCKED ROTOR AMPERAGE(LRA)?
What is a nonrechargeable battery dry cell voltage?
What is 1.5v?
A capacitor comprised of two capacitors with different capacity values that share one common plate.
WHAT IS A DUAL CAPACITOR?
A durable, field-repairable refrigeration compressor that bolts together, housing both the motor and compressor in a single accessible shell.
What is a SEMI-HERMITIC COMPRESSOR?
A device that changes one form of energy to another.
What is a TRANSDUCER?
a Wi‑Fi–enabled device that automatically adjusts your home’s heating and cooling and lets you control temperatures remotely via a smartphone or tablet. It can learn your schedule, use occupancy sensors, provide energy‑use reports, and integrate with smart‑home systems like Alexa or Google Home.
What is A SMART TSTAT?
A split-phase motor that operates on two different voltages.
What is DUAL-VOLTAGE MOTOR?
The principle used to generate electricity in many devices, resulting from the generation of electromagnetic force (emf).
WHAT IS MAGNECTIC INDUCTION
A single-phase motor capacitor that is energized while the motor is operating and dissipates the heat generated by current flow.
WHAT IS A RUN CAPACITOR?
A highly efficient, quiet, and reliable positive-displacement pump commonly used in HVAC and refrigeration(
What is a SCROLL COMPRESSOR?
DBL PTS
A device that detects a change in physical quantities, such as temperature, and sends a signal to an electronic device or activates a mechanical switch.
What is A SENSOR?
WHAT WIRES ARE NEEDED TO MAKE THE AC COME ON?
What is R/Y/G?
Any object that requires physical force to move it.
What is MECHANICAL LOAD?
What is the approximate peak voltage of a 120 Vrms power source?
WHAT IS 170V?
A process that occurs when two coils are placed in close proximity and one coil becomes energized, which then induces an emf and current into the second coil.
What is ELECTROMAGNETIC INDUCTION?
A dynamic, continuous-flow machines that increase gas pressure by accelerating it radially using a high-speed impeller and converting that kinetic energy into pressure via a diffuser.(Jet engines; Turbo chargers; also commercial refrigeration)
WHAT IS A CENTRIFUGAL COMPRESSOR?
An electronic component that regulates current flow based on an external signal or special condition applied.
What is aN ACTIVE COMPONENT?
HOW MANY VOLTS IS A BASIC RESIDENTIAL TSTAT?
What is 24V?
The maximum bemf applied across a coil without causing damage to the coil.
WHAT IS CONTINOUS VOLTAGE?
The maximum value when calculating rms voltage or current of alternating current.
WHAT IS PEAK VALUE?
The apparent power rating of a transformer.
WHAT IS A VOLT-AMPERE (VA) RATING?
an electrically driven fan that creates draft to safely vent combustion gases and enable ignition in modern gas furnaces,
WHAT IS AN INDUCER MOTOR?
A transducer that senses current by magnetic induction like the inductive clamp on a multimeter.
WHAT IS A CURRENT TRANSDUCER?
In basic terms, a sensing device that reacts to temperature change. More broadly, a temperature control that starts and stops an HVAC system when preset temperature conditions are reached
What is a thermostat?
The minimum bemf applied across a coil to keep the armature pulled in and keep the NC contacts open.
WHAT IS DROPOUT VOLTAGE?
A device that only produces alternating current. An alternator has fixed wire loops to form a stator.
What is AN ALTERNATOR?
Two coils wrapped around a laminated metal core in a transformer.
WHAT IS A WINDING?
TRIPLE PTS
The voltage of a building’s electrical wiring, which is usually 120 Vac or 240 Vac.
WHAT ARE LINE VOLTAGES?
The status of a switch that reverts to their normal state after activation.
WHAT IS MOMENTARY?
I protect low-power electrical devices by limiting current
WHAT IS A FUSE?
TRIPLE PTS
A smaller version of an ECM motor that uses a permanent magnet rotor.
WHAT IS BRUCH-LESS DC MOTOR?
A generator that generates ac by using slip rings and brushes to keep the end loop wires from twisting together as it turns within the magnetic flux.
What is An AC GENERATOR?
A load made of coils of wire and powered by an alternating current.
WHAT IS INDUCTIVE LOAD?
I AM THE TYPE OF COMPRESSOR FOUND IN JET ENGINES.
WHAT IS AXIAL?
QUADRUPLE PTS
A rectifier with only one diode and conducts only for half a cycle of the sine wave.
WHAT IS A HALF-WAVE RECTIFIER?
a home heating system that burns natural gas or propane to heat air, which is then distributed throughout a house via ducts.
WHAT IS A FURNACE?
A motor that provides the highest torque and efficiency.
What is a dc MOTOR?
A type of dc power source that consists of one or more cells.
WHAT IS A BATTERY?
DBL PTS
An electromagnetic device used in many trade industries and varies based on its intended purpose.
WHAT IS A SOLENOID?
I AM THE RESCUE MOTOR OF HAVC.
WHAT IS PSC?
The maximum current that can be stopped when contacts open.
WHAT IS CURRENT-INTERUPTING CAPACITY?
TRIPLE PTS
I AM BETTER KNOWN AS A ELECTRIC FURNACE.
WHAT IS A HEAT PUMP?
A capacitor with a permanently split phase during motor operation due to the start winding left in the circuit.
What is a PERMANENT SPLIT CAPACITOR
TRIPLE PTS