(a) State THREE desirable properties of piston rings. (3)
(b) State the materials commonly used for piston rings.(2)
(c) Sketch THREE different types of piston ring ends.(3)
(d) Explain why piston ring end clearance is necessary.(2)
Study Notes MDE Unit 2 Q1 Quiz
(a) Show, using sketches, the THREE clearances necessary for efficient piston ring functioning.(3)
(b) Explain why piston rings are necessary.(2)
(c) Explain why the clearances sketched in part (a) are necessary.(5)
Study Notes MDE Unit 2 Q2 Quiz
With reference to diesel engines thermal and mechanical efficiency, describe where the losses may occur.
(10)