HVAC: Electric Furnace Vocabulary Handout

What is the measure of the strength of electrical current, commonly referred to as amps?

• amps

• volts

• watts

• ohms

What is the amount of heat required to raise one pound of water one degree Fahrenheit called?

• BTU (British Thermal Unit)

• Calorie

• Joule

• Watt

What does the thermostat control in HVAC equipment to achieve the desired set temperature in a space?

• Airflow

• Humidity

• Lighting

• Ventilation

What type of circuit will allow the flow of electricity?

• Closed circuit

• Open circuit

• Short circuit

• Parallel circuit

What is the electric furnace assembly that houses the ni-chromium wire heating elements called?

• electric furnace assembly

• heating chamber

• thermal unit

• heat exchanger

What is the unit of electric power where one kilowatt is equal to 1,000 watts?

• kilowatt

• megawatt

• joule

• ampere

What alloy is made from nickel and chromium used in the manufacture of wire for furnace heating elements?

• Nichrome

• Brass

• Bronze

• Steel

What is the standard unit of electrical resistance?

• Ohm

• Volt

• Ampere

• Watt

What type of circuit will not allow the flow of electricity?

• A circuit that will not allow the flow of electricity is called an open circuit.

• A circuit that allows the flow of electricity is called a closed circuit.

• A circuit with a broken path is called a short circuit.

• A circuit with no resistance is called a superconductor.

What is the deterioration of a conductor due to extreme voltage and heat called?

• Deterioration of a conductor due to extreme voltage and heat is called dielectric breakdown.

• Corrosion

• Oxidation

• Thermal expansion