29. Which event in those seawater systems could be prevented by continuously injecting chemical
poisons?
(A) Scale formation
(B) Erosive damage
(C) Corrosion damage
(D) Marine growth
31. Which device can serve the purpose of preventing or controlling fluid leakage along a shaft
where it passes through a wall or diaphragm that separates regions with different pressures?
(A) Bearing
(B) Seal
(C) Frame
(D) Housing
39. The ignition delay associated with fuels of low ignition quality results in a late and more
explosive start to the combustion period, which results in higher peak pressures and consequent
rough and noisy operation. This means what?
(A) the ignition delay could increase the mean effective pressure of cycle
(B) the more explosive start to the combustion period due to ignition delay could generate the
higher peak pressure
(C) the ignition delay associated with fuels of low ignition quality is beneficial for engine
performance as it results in higher peak pressures
(D) the ignition delay associated with fuels of low ignition quality could alleviate the noise
generation
32. For a gas turbine engine, which component converts the thermal energy in the hot, high
pressure gas stream into mechanical work?
(A) Turbine
(B) Compressor
(C) Combustor
(D) Rotating disc
40. Which component of diesel engine is inserted in a cylinder block and enclosed at the top
by a cylinder head to form the combustion space above the piston?
(A) Water jacket
(B) Cylinder liner
(C) Piston crown
(D) Scavenging ports