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Chapter 39

Chapter 39. Cooling System Fundamentals.

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Chapter 39

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  1. Chapter 39 Cooling SystemFundamentals

  2. Which of the following is not a true statement about the functions of a cooling system? It provides a means of warming the passenger compartment. It removes engine heat. It keeps the engine from reaching operating temperature too quickly. It maintains a proper engine operating temperature. It keeps the engine from reaching operating temperature too quickly.

  3. _____ is another name used to describe the engine bottom end.Short block Crank case Long block none of the above Short block

  4. Typical radiator cap pressure in an automotive cooling system is _____ psi.7 – 10 12 – 16 18 – 20 20 – 2613-15 16-21 12 – 16

  5. An electric engine fan is controlled by _____. timing belt engine speed sensor thermostatic switch pressure sensorfan blade thermostatic switch

  6. A technician who is an expert on one system of a vehicle is called a(n) _____. expert technician technical consultant component specialist specialized technician specialized technician

  7. The correct coolant/antifreeze for use in most vehicles is _____. pure ethylene glycol 25% antifreeze / 75% water 50% antifreeze / 50% water pure water 50% antifreeze 50% water

  8. A block heater is often used on diesel engines to aid winter starting. True False True

  9. A service manual is also known as a(n) _____ manual. owner's third-party shop technical Car none of the above shop

  10. One of the functions of antifreeze is to lubricate the water pump. True False True

  11. The VIN is usually found on the dashboard. True False True

  12. The radiator's primary function is to store engine heat. True False False

  13. When taking a certification test, your first thought about which answer is correct is usually the correct response. True False True

  14. Air cooling systems circulate fresh air through internal engine passages to carry away engine heat. True False False

  15. Molded radiator hose fits only specific years and makes of vehicles. True False True

  16. Which of the following statements about a series circuit is true? It has only one path for current flow. It can have only one load connected at a time. It offers several paths for current flow. It will keep conducting even if interrupted. It has only one path for current flow.

  17. High thermostat heat ranges are used in modern vehicles to reduce exhaust emissions. True False True

  18. Prevents coolant leakage between shaft and housing. Water Pump Seal Water pump gasket O ring All of the above None of the above Water Pump Seal

  19. Mounting for fan and belt pulley. Wheel hub Water pump hub Pulley Bolts None of the aboveWater pump belt Water pump hub

  20. Axle or spindle that transfers force from hub to impeller. water pump shaft thermostat shaft bearing bearing racewater pump belt water pump shaft

  21. The _____ is used for automotive electrical systems. parallel circuit one-wire circuit series-parallel circuit series circuit one-wire circuit

  22. Iron or aluminum casting enclosing pump. Water pump hub Water pump housing Water pump shaft Water pump seal Water pump housing

  23. To protect an electrical circuit from damage by a "short," a device called a _____ is installed. diode capacitor fuse relay fuse

  24. Anti-friction components that allow shaft to spin freely. Anti seize bearing Water pump bearings Impeller bearings Water pump hub Water pump bearings

  25. Fastener with internal threads. Bolt Nut Screw Tap Nut

  26. Disc with fan-like blades; spins to produce pressure and flow. Water pump impeller Water pump hub Pump bearing None of the above Water pump impeller

  27. A filter wrench should be used to "snug up" the filter after an oil change. True False False

  28. Large cooling _____ on the cylinder are an essential feature of air cooling systems. Jackets Fins Rods Fan Fins

  29. Tool for cutting threads in hole. Dye Tap Drill Saw Tap

  30. A water pump _____ is installed between the pump and engine to prevent cooling leakage. Seal Gasket Blade All the above Gasket

  31. "Secondary wire" refers to all vehicle circuits that are not part of the ignition system. True False False

  32. An oil cooler is a small tank placed _____ the vehicle's radiator to dissipate heat from transmission fluid. Inside behindabove None of the above Inside

  33. A large repair facility recycles its used motor oil. Technician A says that only about one quart of high-quality oil can be recovered from each gallon of used oil that is recycled. Technician B says the recovery rate is much higher, about two and one-half quarts per gallon. Who is right? A Only B only Both A and B Neither A or B B only

  34. Pressure in the cooling system raises the boiling point of coolant to between _____ °F. and 260°F. 100 200 250 275 250

  35. If a bolt is over tightened, the _____ could fail. Torque Bolt Threads Nut Threads

  36. A fluid coupling fan clutch is designed to _____ at higher speeds. Slip Stick Lock up None of the above Slip

  37. Unit of current flow. Volt Amp Ohm Power Amp

  38. The thermostat _____ is the temperature at which it opens to permit coolant flow. Pressure Rating Manufacture All of the above Pressure

  39. Transmission fluid should be checked with the engine warmed up and running and the gear selector in "Park." True False True

  40. Antifreeze prevents rust and _____ inside the cooling system. Corrosion Oil Heat Ice Corrosion

  41. A soft, flexible material that is placed between parts to prevent leakage is called a _____. Gasket Seal Gasket & or Seal Neither Gasket & or Seal

  42. When installing a gasket, all fasteners should be hand-tightened before a wrench is applied. True False True

  43. Engine Coolant should be changed every two years. TrueFalse True

  44. Engine oil is checked with dipstick. True False True

  45. Brake fluid level should be checked at least twice a year. True False True

  46. Automatic transmission fluid should be changed if it smells _____. Sweet Sour Burned Nasty Burned

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