Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 14, Problem 7RQ
For every pound of pressure put on engine coolant, the boiling point of the coolant is raised about.
- 2°F(1.1°C)
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1-While refilling an 8-quart (7.57 L) system with coolant: Technician A initially puts in 4 quarts (3.78 L) of straight coolant and tops it off with water. Technician B fills the system with the correct mixture, tightens the radiator cap, and then checks for leaks. Who is correct?
2-While checking for conditions that might cause coolant electrolysis: Technician A places the positive lead of a voltmeter into the coolant and connects the negative lead to a ground. Technician B checks for the presence of voltage in the coolant with the ignition off. Who is correct?
3-Technician A says that if the PCV valve or connecting hoses become clogged, excessive pressure will develop in the crankcase and can cause oil leaks. Technician B says that if the PCV valve or connecting hoses become clogged, oil may be pushed into the air cleaner or cause it to be drawn into the intake manifold. Who is correct?
4-While bleeding air from a cooling system: Technician A loosens a heater hose at its highest…
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Chapter 14 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 14 - What is the most efficient way to increase a...Ch. 14 - True or False? Oil pressure is determined by...Ch. 14 - Describe the simple test used to determine whether...Ch. 14 - Which of the following is a function of the...Ch. 14 - What is ECD and what can result from it?Ch. 14 - True or False? To eliminate the drain of engine...Ch. 14 - For every pound of pressure put on engine coolant,...Ch. 14 - Which is not a typical method of driving the water...Ch. 14 - Which of the following is not an effective way to...Ch. 14 - Explain why a pressure relief valve is needed in...
Ch. 14 - List five problems that can be caused by engine...Ch. 14 - Cooling system hoses should be replaced when they...Ch. 14 - True or False? The presence of air in the cooling...Ch. 14 - Which of the following is not a true statement...Ch. 14 - Describe the procedure for using air bleed valves...Ch. 14 - Technician A uses a feeler gauge and straightedge...Ch. 14 - Technician A says that excessive engine oil...Ch. 14 - While checking for conditions that might cause...Ch. 14 - When installing an oil pump in an engine...Ch. 14 - Technician A says that if the PCV valve or...Ch. 14 - While bleeding air from a cooling system:...Ch. 14 - While diagnosing an engine that overheats after...Ch. 14 - While performing a cooling system service on a...Ch. 14 - While discussing the causes of extreme engine...Ch. 14 - While diagnosing the cause of air bubbles in the...
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- The boiling point of the coolant in an engines cooling system is raised by the thermostat pressure cap radiator water pumparrow_forwardWhich of the following is not an effective way to determine if an engine has an internal coolant leak? Performing a pressure test on the system Visually inspecting the exhaust, coolant, and engine oil Using a dye penetrant and black light Using a combustion leak testerarrow_forwardBriefly describe how the scroll compressor compresses refrigerant gas.arrow_forward
- Why does the high-pressure gauge on a regulator not always indicate the amount of gas in the cylinder?arrow_forwardWhat is the function of the oil return hole or orifice in a suction accumulator?arrow_forwardWhen condenser tubes become fouled, they may be cleaned by A. using a steel brush. B. using a brass brush. C. using a chisel and hammer. D. running a mixture of sand and water through them.arrow_forward
- Which compressor type uses pistons to compress the gas? A. Scroll B. Reciprocating C. Rotary D. Screwarrow_forward9. While preparing to remove an engine: Technician A disconnects the refrigerant lines at the air-conditioning compressor and allows the refrigerant to totally leak out before removing the compressor. Technician B installs plugs in the ends of the refrigerant hoses after they have been disconnected. Who is correct?arrow_forwardWhich of the following statements is not true? A direct acting PRV: Is complex in construction, therefore can malfunction if a very small dirt gets trapped inside the valve, which may result in safety hazard Offers uneven flow Does not provide precise pressure control Causes more wastage of HP compared to a compound one Which of the following basic system components has the primary function of removing the heat of compression from the air? Receiver Relief valve Pressure regulator Dryer Aftercooler Which of the following statements is true? A single acting cylinder may have two ports at two different ends and pressurized fluid can be directed to both of them A single acting cylinder with two ports will can be used as a double acting cylinder A single acting cylinder may have two ports at two different ends but into only one of the ports pressurized fluid is being directed A single acting cylinder…arrow_forward
- True or false As fluids flow through pipes energy is lost due to friction which produces a pressure differentialarrow_forwardTechnician A says that when the refrigerant is pumped out of the compressor and sent to the condenser, heat in the refrigerant is moved to the outside air by conduction and convection. Technician B says that the refrigerant leaves the bottom of the condenser as a high-pressure, high-temperature liquid. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardWhat is the purpose of a pressure regulator?arrow_forward
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