11. Friction is . . . . . . . . when the material is shoft.
12. Grease is prepared by saponification of
13. The correct flow sequence of lubrication oil is
14. . . . . . . . . are fairly water proof and are useful for water pumps, chassis and wheels bearings.
15. If the coolant temperature rises and the pressure inside the radiator exceeds a predetermined level, which valve in the radiator cap will open?
16. The function of piston ring in an internal combustion engine is
17. SAE means-
18. Essential requirements of good lubricating oil is/are-
19. A measure used to remove the combustion gases from the crankcase is called
20. Thermal efficiency is . . . . . . . . due to more loss of heat to the cylinder walls.
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