HVACR Study guides, Revision notes & Summaries

HVACR Practice Test Accurate 100%(RATED A+)What is the symbol for impedance? a. R b. I c. Z d. P - ANSWER z The safety ground conductor for A/C circuit is usually color coded ________. a. red b. green c. black d. white - ANSWER Green Resistance is _______. a. amperage b. electrical pressure c. opposition to current flow d. voltage applied to the circuit - ANSWER opposition to current flow How many watts of power are used by a heater operating at 480 volts and drawing 5 amps?...

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What is the symbol for impedance? a. R b. I c. Z d. P - ANSWER z The safety ground conductor for A/C circuit is usually color coded ________. a. red b. green c. black d. white - ANSWER Green Resistance is _______. a. amperage b. electrical pressure c. opposition to current flow d. voltage applied to the circuit - ANSWER opposition to current flow How many watts of power are used by a heater operating at 480 volts and drawing 5 amps? a. 5 watts b. 96 watts c. 480 watts d....

HVACR Practice Test Correct 100% What is the symbol for impedance? a. R b. I c. Z d. P - ANSWER z The safety ground conductor for A/C circuit is usually color coded ________. a. red b. green c. black d. white - ANSWER Green Resistance is _______. a. amperage b. electrical pressure c. opposition to current flow d. voltage applied to the circuit - ANSWER opposition to current flow How many watts of power are used by a heater operating at 480 volts and drawing 5 amps? a. ...

In a (direct expansion) evaporator, liquid refrigerant must boil away as close to the end of the coil as possible in order to: - ANSWER Operate at High Efficiency. What is one of the main reasons that reciprocating compressors are not 100% efficient? - ANSWER Clearance Volume A dirty evaporator and return air filters subsequently causes low evaporator pressures which will cause - ANSWER High Compression Ratios The automatic expansion valve (AEV) maintains a constant ______ in the evapor...

This compressor uses pistons and valves to compressor refrigerant. - ANSWER Reciprocating This compressor uses vanes to compress refrigerant. - ANSWER Rotary compressor This compressor is the latest technology for compressor design - ANSWER Scroll pump The manifold gauges should be in this position to pull a vacuum - ANSWER They should all be open What is standing pressure used for? - ANSWER To let you know that there is enough refrigerant to start the system What valve on a recip...

volt amps - ANSWER Transformers are normally rated in? true - ANSWER An insulated jumper may be used to temporarily jump a component in an electrical circuit(true or false)? divided by 10 - ANSWER When using a 10 wrap multiplier the reading on the meter must be? ladder diagram - ANSWER An electrical line wiring diagram is often called? pictorial diagram - ANSWER A wiring diagram that shows the approximate location of components is called?

HVACR Journeyman Practice Exam Quizzes & Ans!!

HVAC-R Midterm Exam Questions With Correct Answers 100%