Each cylinder liner on the marine medium speed engines _____.A.is usually cooled by sea wa

Each cylinder is closed at the top by a _____, made of a special heat-resistant steel.

A.cylinder liner

B.coupling flange

C.cylinder cover

D.piston crown

The space between cylinder liner and jacket is called _____.

A.the cooling water

B.the circulating water

C.the cooler

D.the cooling water space

A crack in a cylinder liner can be caused by

A.worn piston rings

B.installation of undersized sealing rings

C.operating the engine at low loads

D.restricted cooling water passages

Low compression in a diesel engine could be caused by

A.worn or broken cylinder liner sealing rings

B.high cooling water temperature

C.worn or broken piston rings

D.low fuel oil pressure

A.the running-in period

B.the running process

C.gas exchange process

D.the boiler firing

Piston cooling fins are located

A.atop the piston crown

B.beneath the piston crown

C.at the base of the piston skirt

D.inside the cylinder liner cooling water jacket

A.open the indicator cocks

B.supply some CYL.Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)

C.put the fuel handle in the "stop" position

D.pump up the air bottle

A.Control the amount of lube oil burned in the combustion chamber

B.Transmit heat from the piston to the cylinder liner

C.Prevent damage to ring groove inserts by acting as a heat dam

D.Dissipate combustion chamber gas pressure by channeling it through the ring gap

The main factor which determines the output of each cylinder is _____.

A.the cylinder weight

B.the cylinder bore

C.the cylinder length

D.the cylinder cover

A.low firing pressure

B.low exhaust temperature

C.mechanical knock in each cylinder

D.fuel knock in each cylinder