Automotive Technology: Principles, Diagnosis, and Service (5th Edition)
5th Edition
ISBN: 9780133994612
Author: James D. Halderman
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 6CQ
What component regulates the temperature of the coolant in an engine?
- a. Cooling (water) jackets
- b. Thermostat
- c. Cooling fan(s)
- d. Radiator
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1. An air-source heat pump is a heat-pump system that uses air:
a. as the system refrigerant.
b. as the heat source when operating in the cooling mode.
c. as the heat sink when operating in the heating mode.
d. as the heat source when operating in the heating mode.
2. According to the Department of Energy, duct leakage can result in a energy loss?
a. 10%
b. 20%
c. 30%
d. 40%
3. As the outside ambient temperature drops, the efficiency of a heat-pump system operating in the mode will:
a. heating, drop
b. heating, rise
c. cooling, rise
d. Both a and c are correct.
Differentiate the two types of external combustion engine
8. What would be done to increase the compressor speed
on a belt-driven compressor?
A. Decrease drive pulley size
B. Increase drive pulley size
C. Increase driven pulley size
13. What lubricates the refrigeration compressor?
A. Refrigerant
B. Moisture
C. Desiccants
D. Oil
D. Both A andC
9. Describe the reciprocating compressor piston, rod,
crankshaft, valves, valve plate, head, shaft seal, internal
motor overload device, pilot-duty motor overload de-
vice, and coupling.
10. Name two things in the design of a reciprocating com-
pressor that control the efficiency of the compressor.
А.
14. What can the service technician do to keep the refrig-
eration system operating at peak efficiency?
15. List the main advantage that a discus compressor's
valve plate design has over a conventional piston-type
В.
11. At what speeds in rpm does a hermetic compressor nor-
mally turn?
A. 1750
В. 3450
C. 4500
D. Both A and B
12. What effect does a slight amount of liquid refrigerant
have on a compressor…
Chapter 1 Solutions
Automotive Technology: Principles, Diagnosis, and Service (5th Edition)
Ch. 1 - In 1900, what was the most produced vehicle...Ch. 1 - What parts are included in the vehicle chassis?Ch. 1 - Why were early engines called flat heads?Ch. 1 - Prob. 4RQCh. 1 - The powertrain consists of what components?Ch. 1 - Prob. 6RQCh. 1 - Prob. 1CQCh. 1 - Prob. 2CQCh. 1 - Which component is not part of the chassis system?...Ch. 1 - Early engines were called flat head design because...
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- to run d. both a and b 44. Ifa thermostatic expansion valve's thermal bulb came loose from the suction line at the outlet of the evaporator, whích of the following could result? The bulb pressure would increase and the c. thermostatic expansion valve would open. b. The superheat in the evaporator would decrease. a. Liquid refrigerant would flow back to the compressor. d. All of the above are correct. 45. If the thermal bulb assembly develops a leak, what will occur? All of the system's refrigerant will leak a. The valve will open to allow more c. refrigerant to flow. d. It will have no effect on system operation. out. b. The bulb pressure will reduce and the valve will close. 46. The purpose of an externally equalized thermostatic expansion valve is to compensate for excessive evaporator pressure drop b. allow system to equalize faster a. prevent the expansion valve from frosting up d. c. allow refrigerant to expand in the compressor 47. The primary function of an expansion device is…arrow_forwardThe different descriptions for fluid power conductors (lines). The ___________ lines are connected to the output device a. suction b. return/exhaust c. actuator d. supplyarrow_forwardAn overheating vehicle is being discussed. Technician A states that coolant in a normal flow cooling system flows from the radiator to the heater core to warm up the passenger compartment quickly. Technician B states that in a reverse flow cooling system, coolant flows to the cylinder heads first, which keeps engine components at a more uniform temperature. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A andB d. Neither Technician A nor Barrow_forward
- The compressor which is is used in a.Two Stage reciprocating compressor in which two cylinders are present, big cylinder for 1st stage and small cylinder for second stage b.Two Stage reciprocating compressor in which two cylinders are present, Small cylinder for 1st stage and big cylinder for second stage c.Two Stage reciprocating compressor in which two cylinders are present, Both cylinders are for 1st stage compression of air d.Two Stage reciprocating compressor in which two cylinders are present, First cylinder is having smaller bore than second cylinder for compression of airarrow_forwardWhich one of the following statement is correct for steam nozzle? a. Outlet velocity of the steam is greater than inlet velocity of the steam b. Work done by the steam nozzle O C. The height difference between inlet and outlet nozzle is more o d. Heat is rejected by the steam nozzlearrow_forwardWhich one of the following is a component of the reciprocating compressor? a. Casing b. Nozzle E Piston d. Guide vanearrow_forward
- Just explain the diagram pleasearrow_forward-Experiment- Air conditioning (Study of Air Conditioning Unit: Evaluation of heating and steam injection performance) Q. What is the reason of having preheater before steam injector?arrow_forwardTechnician A says that an air-conditioning system removes heat from inside the engine. Technician B says that the heating system removes heat from the inside of the vehicle. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forward
- Compare gasoline and diesel enginearrow_forwardA vehicle is having its water pump replaced. When the water pump is removed, severe corrosion is found on the water pump impeller, and inside the engine. Technician A states that the radiator cap may be overpressurizing the system. Technician B states that the vehicle may have been run with 100% water in the cooling system for some time. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor Barrow_forwardAn overheating vehicle is being discussed. Technician A states that the vehicle may be overheating because the heater control valve is stuck closed. Technician B states that the vehicle may be overheating because the PCM in not energizing the cooling fan relay. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor Barrow_forward
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