AIR CONDITIONER EXAM
NAME:
DEALERSHIP:
THIS IS A TIMED, MULTIPLE CHOICE END-OF-UNIT EXAMINATION,
DESIGNED TO DEMONSTRATE YOUR UNDERSTANDING OF THE
INFORMATION PRESENTED. CIRCLE THE ANSWER MOST NEARLY
CORRECT. YOU WILL HAVE 25 MINUTES TO COMPLETE THE
EXAMINATION. FOLLOW OTHER DIRECTIONS AS GIVEN BY THE TEST
PROCTOR.
1. THE SECOND LAW OF THERMODYNAMICS STATES THAT
A. HEAT TENDS TO FLOW FROM COLD PLACES TO HOT
PLACES.
B. HEAT TENDS TO FLOW FROM HOT PLACES TO COLD
PLACES.
C. HEAT TENDS TO FLOW FROM INSIDE TO OUTSIDE.
D. HEAT TENDS TO FLOW FROM OUTSIDE TO INSIDE.
2. WITH THE INDOOR TEMPERATURE AT 75 DEGREES AND
THE INDOOR RELATIVE HUMIDITY AT 50% A WELL-DESIGNED
SYSTEM WILL OPERATE AT _______% LATENT HEAT
CAPACITY.
A. 75
B. 50
C. 35
D. 10
3. IN REFRIGERATION SYSTEMS, FLUIDS THAT ABSORB HEAT
ARE CALLED
A. FREONS.
B. CFC.
C. HCFC.
D. REFRIGERANTS.
4. THE COMPONENT THAT IS USED TO RAISE THE PRESSURE,
TEMPERATURE AND SATURATION POINT OF REFRIGERANT
VAPOR IS THE __________.
A. COMPRESSOR
B. CONDENSOR
C. EVAPORATOR
D. CAPILLARY TUBE
5. THE COMPRESSOR, DISCHARGE LINE, CONDENSOR LIQUID
LINE AND CAPPILARY TUBE ARE ALL PART OF THE
____________.
A. LOW PRESSURE SIDE
B. HIGH PRESSURE SIDE
C. HOT SIDE
D. COLD SIDE
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6. VAPOR REFRIGERANR IS CHANGED TO LIQUID IN THE
______.
A. COMPRESSOR
B. CONDENSOR
C. EVAPORATOR
D. CAPILLARY TUBE
7. THE FLOW OF REFRIGERANT TO THE EVAPORATOR IS
CONTROLLED BY THE ______________.
A. COMPRESSOR
B. CONDENSOR
C. EVAPORATOR
D. CAPILLARY TUBE
8. LIQUID REFRIGERANT IS CHANGED TO VAPOR IN THE
________.
A. COMPRESSOR
B. CONDENSOR
C. EVAPORATOR
D. CAPILLARY TUBE
9. THE EVAPORATOR, SUCTION LINE, AND COMPRESSOR
INTAKE ARE ALL PART OF THE _____________.
A. LOW PRESSURE SIDE
B. HIGH PRESSURE SIDE
C. HOT SIDE
D. COLD SIDE
10. THE DELTA-TEMPERATUR RELATIONSHIP IS MEASURED
ACROSS THE ______________.
A. COMPRESSOR
B. CONDENSOR
C. EVAPORATOR
D. CAPILLARY TUBE
11. AIR CONDITIONERS ARE RATED BY THEIR ___________
CAPACITY.
A. AMP DRAW
B. HUMIDIFYING
C. POWER
2
D. BTU
12. THE THREE SYSTEMS OF AN AIR CONDITIONER ARE_______.
A. ELECTRICAL, REFRIGERATION AND AIR FLOW
B. AIR FLOW, REFRIGERATION AND COMPRESSOR
C. AIR FLOW, ELECTRICAL AND ACCUMALOTR
D. REFRIGERATION, ELECTRICAL AND CONDENSOR
13. AS THE LOAD OF AN AIR CONDITIONER INSREASES SO
WILL THE _______ AMPERAGE IN A DIRECT RELATIONSHIP.
A. FAN MOTOR
B. COMPRESSOR
C. CAPACITOR
D. PTCR
14. THE MAIN COMPONENT OF THE HEAT PUMP IS THE _____.
A. COMPRESSOR
B. EVAPORATOR
C. CONDENSOR
D. REVERSING VALVE
15. THE MAIN DIFFERENCE BETWEEN THE HEATING AND
COOLING MODES OF A HEAT PUMP IS THE FLOW OF
REFRIGERANT IS _________.
A. STOPPED
B. SLOWED
C. REVERSED
D. PULSING
16. THE CLEAN AIR ACT OF 1990 ADDRESSES _________.
A. EMISSIONS
B. FREON
C. REFRIGERANTS
D. NOTHING TO DO WITH RECREATION VEHICLES
17. RV TECHNICIANS HANDLING REFRIGERANTS MUST BE
CERTIFIED AT LEAST A __________________.
A. TYPE 1
B. RVIA/RVDA CERTIFIED TECHNICIAN
C. 601
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D. 604
18. WITH THE INSIDE AIR AT ABOUT 50% RELATIVE HUMIDITY
THE DELTA TEMPERATURE RELATIONSHIP SHOULD BE
APPROXIMATELY ________.
A. HIGHER
B. 20 DEGREES C
C. 20 DEGREES F
D. LOWER
19. THE MOST COMMON CAUSE FOR LACK OF AIRFLOW
WOULD BE ____________.
A. A FAULTY BLOWER
B. A FAULTY FAN CAPACITOR
C. LOW REFRIGERANT
D. DIRTY AIR FILTERS
20. INCREASING PRESSURE OF THE REFRIGERANT R-22 ALSO
INCREASES __________.
A. TEMPERATURE
B. SATURATION
C. CONDENSATION
D. EVAPORIZATION
21. THE SYSTEM PRESSURE OF THE AIR CONDITIONER SHOULD
BE CHECKED ___________.
A. ANNUALLY
B. SEMI-ANNUALLY
C. ONLY WHEN NEW
D. AS A LAST RESORT
22. A BASIC COOLING PERFORMANCE TEST CONSISTS OF
______.
A. A COMPRESSOR VOLTAGE AND AMPERAGE CHECK, AND
CHECKING THE TEMPERATURE DROP ACROSS THE
EVAPORATOR COIL.
B. A PRESSURE TEST
C. CLEANING THE FILTERS
D. FEELING TO SEE IF THE AIR IS COLD.
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23. THE CONTACTS ON THE START RELAY OPEN WHEN THE
COMPRESSOR REACHES _________% OF ITS NORMAL
RUNNING SPEED.
A. 33
B. 50
C. 75
D. 90
24. THE __________ IS MOUNTED ON THE COMPRESSOR
HOUSING AND IS ACTIVATED BY HIGH AMPERES OR HIGH
TEMPERATURE.
A. CIRCUIT BREAKER
B. OVERLOAD SWITCH
C. START CAPACITOR
D. HACR BREAKER
25. WITH A VOM SET TO THE OHM SCALE THE CONTINUITY OF
THE THREE TERMINALS, COMMON, RUN, AND START TO THE
COMPRESSOR CASING SHOULD BE _______ OHMS.
A. MORE THAN 100
B. LESS THAN 100
C. INFINITE
D. 0
26. THE FIRST CHECK ON THE PTCR IS _________.
A. CONTINUITY
B. VOLTAGE
C. AMPERAGE
D. TEMPERATURE
27. TO PROPERLY DISCHARGE A CAPACITOR YOU NEED TO
USE A(N) ____________.
A. SCREWDRIVER
B. BATTERY
C. INEXPERIENCED TECHNICIAN
D. VOLT METER
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28. WHEN CHECKING AMP DRAW OF THE FAN MOTOR YOU
SHOULD HAVE THE METER ON THE _________ WIRE.
A. WHITE
B. RED
C. YELLOW
D. BLACK
29. APPROXIMATE COMPRESSOR AMPERAGE RATING MAY BE
DETERMINED BY ___________
A. THE USE OF AN AMMETER
B. REFERRING TO THE OWNERS MANUAL
C. REFERRING TO THE RATING PLATE ON THE AIR
CONDITIONER
D. CALCULATING THE DELTA-TEMPERATURE
30. THE COMPRESSOR AMPS MUST BE ADJUSTED FROM RATED
CONDITIONS UP OR DOWN ______ FOR EVERY _________.
A. 5 AMPS, 1 DEGREE F
B. 1 AMP, 5 DEGREES F
C. 2 AMPS, 2 DEGREES F
D. 3 AMPS, 3 DEGREES F
31. FEDERAL REGULATIONS REQUIRE SMALL APPLIANCES TO
BE __________ _______ __________ BEFORE OPENING THE
SYSTEM OR DISPOSING OF THE APPLIANCE.
A. BOUGHT AND PAID FOR
B. TESTED AND SEALED
C. FAULTY OR CONDEMNED
D. RECOVERED AND EVACUATED
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