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Electrical 1st Final Questions And Answers With Verified Solutions Already Passed!!!
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Electrical 1st Final Questions And Answers With Verified Solutions Already Passed!!!
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Electrical 1st Final Questions AndAnswers With Verified Solutions Already
Passed!!!
Thermostats Respond to : - ANSWER✔✔Changes in air Temperature
Three, 59 Ohm resistors in parallel will have a total resistance of : -
ANSWER✔✔16.6 Ohm's
What component is responsible for reversing the flow of refrigerant in a heat pump
? - ANSWER✔✔The reversing valve
A control which is operated by moisture is called a : - ANSWER✔✔Humidistat
On a heat pump thermostat, if the jumper between the W and Y terminal is open,
how will it affect the system? - ANSWER✔✔No Heating
Electric strip heaters will create how many BTU's per watt? - ANSWER✔✔3.413
BTU's of heat per watt
On a new heat pump installation, what color wire from the thermostat would
energize the reversing valve solenoid coil: - ANSWER✔✔Orange
The most common single phase motor found in residential AC systems is: -
ANSWER✔✔PSC
, What occurs when a gas furnace limit switch opens? - ANSWER✔✔It de-
energizes the gas valve
What amount of cooling in BTU's will a 3 ton unit produce? -
ANSWER✔✔36,000 BTU's of cooling per hour
Opening and closing switches quickly and cleanly is referred to as: -
ANSWER✔✔Detent
The main reason for using 24v control voltage on a residential system is: -
ANSWER✔✔Safety
A 75VA control transformer will provide a maximum current output of how many
amps ? - ANSWER✔✔3.125
A device that protects against excessive motor current is called : -
ANSWER✔✔An Electrical Overload
The high pressure control protects against : - ANSWER✔✔Excessive system
pressure
The low pressure control protects against : - ANSWER✔✔Operating the system
below a predetermined low pressure level
A Crank Case Heater (CCH) is: - ANSWER✔✔Designed to add heat to the oil in
the compressor, a resistive load, usually operates on 240v high voltage in an AC
system
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