Question 3Motor Plants - 1st Asst/Chief
70% to passThe lower water seal on a diesel engine wet cylinder liner must allow for liner axial movement. This seal is most commonly a _______________.
Aflexible metallic seal ring
Bneoprene O-ring
Cprecision ground flange joint
Dsoft copper gasket
AI Explanation
The correct answer is B) neoprene O-ring. The lower water seal on a diesel engine wet cylinder liner must allow for axial movement of the liner, which is necessary to accommodate thermal expansion. A neoprene O-ring is the most common type of seal used for this purpose, as it is flexible and can compress to permit the required liner movement. The other options are incorrect because: A) a flexible metallic seal ring would not provide the necessary flexibility, C) a precision ground flange joint would not allow for liner movement, and D) a soft copper gasket would not have the compressibility required.
Related Questions
Q68:The device shown in figure "A" of the illustration is used to _______________. I... Q191:An exhaust gas bypass is installed on a waste heat boiler in order to___________... Q28:There are two glands provided where the piston rod exits the cylinder shown in t... Q134:Differential needle valves used in fuel injectors are directly closed by________... Q209:What is the best way of stopping an overspeeding diesel engine?
Ready to test your knowledge?
Take a Motor Plants - 1st Asst/Chief Practice ExamOfficial Resources