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Title: Mechanical engineering Exam Questionshelp Post by: durga8699 on Feb 17, 2018 4. Two technicians are diagnosing a problem with an OHV V-8 with flat-bottom lifters. The rocker covers have been removed and the engine is running. One pushrod is not rotating. Technician A says that the camshaft is worn and must be replaced. Technician B says that the lifter is worn and must be replaced. Which technician is correct?
a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B 5. Two technicians are discussing the cause of low oil pressure. Technician A says that a worn oil pump could be the cause. Technician B says that worn main or rod bearings could be the cause. Which technician is correct? a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B 7. Pushrods should be checked for ________. a. Length b. Straightness c. Diameter d. All of the above 8. Which statement is true about surface finish? a. Cast-iron surfaces should be smoother than aluminum surfaces. b. The rougher the surface is, the higher the micro inch finish measurement. c. The smoother the surface is, the higher the micro inch finish measurement. d. A cylinder head should be a lot smoother than a crankshaft journal. 9. Two technicians are discussing torquing cylinder head bolts. Technician A says that many engine manufacturers recommend replacing the head bolts after their first use. Technician B says that many manufacturers recommend tightening the head bolts to a specific torque, then turning the bolts an additional number of degrees. Which technician is correct? a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B 10. Technician A says that a dial indicator (gauge) is often used to measure valve guide wear by measuring the amount by which the valve head is able to move in the guide. Technician B says that a ball gauge can be used to measure the valve guide. Which technician is correct? a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor B 11. Coolant passages in the cylinder head should be inspected for _____________. a. Corrosion b. Restrictions (blockages) c. Leakage d. All of the above 14. A worn piston pin causes what type of problem? a. Engine burns an excessive amount of oil (blue smoke) b. Engine produces a knocking noise that will disappear if the cylinder is grounded out c. Engine produces a double knocking noise that will not disappear if the cylinder is grounded out d. Engine knock when warm only Title: Re: Mechanical engineering Exam Questionshelp Post by: bolbol on Feb 17, 2018 Content hidden
Title: Re: Mechanical engineering Exam Questionshelp Post by: Justin65 on Mar 27, 2018 Thank you so much.
Title: Re: Mechanical engineering Exam Questionshelp Post by: James98 on Mar 28, 2018 Thank you
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