Esco Study guides, Class notes & Summaries

ESCO Air Conditioning Exam With 100% Correct Answers 2024

ESCO ELECTRICAL TEST QUESTIONS WITH CORRECT DETAILED ANSWERS 2024.

Current flow flow of electrons in a circuit Impeadance opposition to alternating current flow any material that will readily release electrons conductor the symbol for current I best material suited for a semi-conductor silicone type of charge an electron has negative resistance opposition to electron flow type of meter that uses its own battery Ohm Meter how are fuses sized volt and amps 2 120 volt bulbs in a series circuit but different wattage lower wattage but higher amps will light

Heat which causes a change in temperature of a substance is called Sensible heat Heat added to a substance without a rise in temperature Latent heat Heat added to the refrigerant in a vapor state after the evaporation process is called Superheat Scroll compressor move refrigerant by Involute Spirals The movement of heat by way of fluid is called Convection The movement of heat by direct contact is Conduction The standard unit for measuring the quantity of heat in a substance is BTUs Refri...

What is current flow? D.The flow of electrons in a circuit What is impedance? A.Opposition to alternating current Like charges will B.Repel each other Any material that will readily release electrons is called: B.A conductor The symbol for current is: B. I Electricity can produce: D. All the above light heat magnetism The safety ground conductor is usually colored: B.Green An electron has: B.A negative charge Which of the following materials would be best suited for use as a semi-c...

1. An air-to-air heat pump has many of the same components as an air conditioning system. The major difference is that a heat pump also has a (an); C: reversing valve. 2. What is the difference between "demand defrost" and "timed defrost?" D: demand defrost only happens when needed, and time defrost is on timed temperature 3. The thermostat that controls the auxiliary electric heat according to the outdoor temperature is called the; C: outdoor ambient thermostat. 4. The outdoor temp...

. A gas furnace is to be installed in a garage. The burners and ignition sources must be located ______ above the floor. A: 6 inches B: 12 inches C: 18 inches D: 24 inches C: 18 inches 2. A good description of how hi-metai fan switch operates the blower motor on a gas furnace is: A: temperature on - time off. B: temperature on - time on. C: temperature on- temperature off. D: time on - time off. C: temperature on- temperature off 3. Redundant gas valves used on gas furnaces will shut...

A gas furnace to be installed in a garage. The national standards requires that the burners and ignition must be located ____ above the floor: 18 inches A good description of how a bi-metal fan switch operates the blower motor on a gas furnace is: Temperature on/ Temperature off Redundant gas valves used on gas furnaces will shut down if gas pressure exceeds: 13.5 in W.C. (or 1/2 psi) This is the maximum pressure for gas valve operation Burning one cubic foot of Liquefied Petroleum g...

Heat Pump ESCO Questions With 100% Correct Answers!! An air-to-air heat pump has many of the same components as an air conditioning system. The major difference is that a heat pump also has an Reversing valve What is the difference between "demand defrost" and "timed defrost"? Demand defrost happens only when needed and timed defrost is based on time/temperature. The thermostat that controls the auxiliary electric heat according to the outdoor temperature is called the; Outdoor ambi...

Heat which causes a change in temperature of a substance is called Sensible heat Heat added to a substance without a rise in temperature Latent heat Heat added to the refrigerant in a vapor state after the evaporation process is called Superheat Scroll compressor move refrigerant by Involute Spirals The movement of heat by way of fluid is called Convection The movement of heat by direct contact is Conduction The standard unit for measuring the quantity of heat in a substance is BTUs Refri...

Heat which is added to a vapor after the change of state occurs is called superheat A refrigerant gives up heat when; it condenses it is desirable for refrigerant in the suction line to be slightly superheated in order to... ensure liquid refrigerant does not enter the compressor state of refrigerant in the suction line should be... low pressure/ low temperature vapor state of refrigerant entering the condenser is... high pressure/ highly superheated vapor the evaporator... Transfers heat...

Heat which causes a change in temperature of a substance is called - ANSWERSensible heat Heat added to a substance without a rise in temperature - ANSWERLatent heat Heat added to the refrigerant in a vapor state after the evaporation process is called - ANSWERSuperheat Scroll compressor move refrigerant by - ANSWERInvolute Spirals