Postal Automotive Technician Exam 944 Questions and Verified Solutions Latest Update This Year

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Postal Automotive Technician Exam 944 Questions
and Verified Solutions Latest Update This Year



QUESTION: 1. Most small gas engines use a _________ ignition system - ANSWER-Magneto




QUESTION: 2. Icing occurs most often - ANSWER-On cool damp days




QUESTION: 3. The function of the float in a carburetor is two - ANSWER-Close the needle valve




4. The vibration damper on an auto engine is fastened to the - ANSWER-Crankshaft




QUESTION: 5. To improve stability when cornering manufactures added a device to cars called -
ANSWER-Stabilizer bar




QUESTION: 6. adjustment of the rods on a car will affect - ANSWER-Toe-in




QUESTION: 7. A restriction in the exhaust system is indicated on a vacuum gauge by a -
ANSWER-gradual decrease in reading

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QUESTION: 8. Disc brakes on a car have a distinct advantage over conventional drum brakes in
that they - ANSWER-Fade Less when hot




QUESTION: 9. In a diesel engine, the fuel is ignited by the - ANSWER-Heat of compression




QUESTION: 10. Engine timing is generally set by using a - ANSWER-Strobe light




QUESTION: 11. If an engine is operating for long periods of time at part throttle opening the -
ANSWER-Spark plugs will become covered with carbon




QUESTION: 12. Leaking intake valve guides will cause - ANSWER-Excessive oil consumption




QUESTION: 13. Flooding of a carburetor is generally caused by - ANSWER-A stuck float needle
valve




QUESTION: 14. On many cars the fuel pump is combined with the - ANSWER-vacuum pump




QUESTION: 15. Corbon fouling of a spark plug is an indication of - ANSWER-To rich a mixture




QUESTION: 16. If a test shows that generator output is excessive even after the F Terminal has
been disconnected the trouble may be traced to - ANSWER-The generator

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QUESTION: 17. An automobile alternator converts alternating current to direct current, by
means of - ANSWER-Silicon diodes




QUESTION: 18. Hard starting is very often caused by - ANSWER-Improper choke operation




QUESTION: 19. A car with a history of burned points would probably indicate - ANSWER-Too
high setting of the voltage regulator




QUESTION: 20. When it is necessary to recondition brake drums, the maximum allowable
amount of the oversize is__________ inches - ANSWER-.060




QUESTION: 21. The amount of air fuel mixture taken into the cylinder on the intake Stroke is a
measure of the engines. - ANSWER-Volumetric efficiency




QUESTION: 22. Welch plugs are installed on engines to provide - ANSWER-A means of removing
the sand after the engine is cast




QUESTION: 23. The two cycle engine produces a power stroke with every_________

Of the crankshaft. - ANSWER-Revolution