更多"Air bubbles in a hydraulic governor"的相关试题:
[单项选择]If a hydraulic governor has been refilled with oil, the engine should be operated until it reaches normal temperaturethen the air should be purged, and the()
A. rack position should be adjusted
B. compensating needle valve should be opened fully compensating
C. needle valve should be adjusted to stabilize operation
D. speed limiting device should be adjusted
[单项选择]Which of the following problems could cause air to blow out through the inlet air filter of a running compressor?()
A. Excessive compression in the cylinder
B. A broken intake valve
C. A dirty inlet filter element
D. An improperly adjusted discharge valve
[单项选择]Air in the fuel can cause()
A. high lube oil temperature
B. blue smoke
C. the engine to stop
D. piston seizure
[单项选择]The most common contaminate of governor hydraulic fluid is ().
A. moisture
B. dirt
C. acid
D. air
[单项选择]Hot air can hold().
A. less moisture than cold air
B. more moisture than cold air
C. the same amount of moisture as cold air
D. moisture independent of air temperature
[单项选择]Air in the fuel lines of a diesel engine can cause ()
A. ignition failure
B. oxygen corrosion of the fuel lines
C. the pistons to seize
D. blue smoke
[单项选择]Which cause of the following can lead to the engine not to start on air?()
A. starting air pressure too high
B. correct timing of starting air valves
C. three of the starting valves stuck
D. the turning gear disengaged
[单项选择]Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?()
A. Clogged air intake falters
B. Piston blow-by
C. A defective after-cooler
D. Faulty exhaust valves
[单项选择]Which of the following conditions can cause below normal air pressure in the intake manifold of a turbocharged diesel engine?()
A. Excessive piston blow-by to the manifold
B. Insufficient cooling water flow
C. Accumulated water in the air boxes
D. Clogged air intake filters
[单项选择]Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?()
A. Defective temperature controls in the system
B. Cavitation in the cooling water pump
C. Opened vent in the cooling system
D. Restricted water passages in the engine
[单项选择]Which of the following conditions can cause excessive lube oil consumption in a diesel engine?()
A. Low lube oil temperature
B. Dirty lube oil strainer
C. Low lube oil pressure
D. High lube oil temperature
[单项选择]An air compressor can be unloaded at start-up by ().
A. holding the discharge valve open
B. relieving the intercooler pressure to the atmosphere
C. using an enlarged, permanently opened clearance expansion space
D. a pre-charged accumulator
[单项选择]One cause of diesel engine surging can be a result of ()
A. injection pump plungers stuck or worn
B. low compression
C. solenoid stuck open
D. fuel tank too full
[单项选择]Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after-cooled diesel engine?()
A. Faulty turbocharger turbine diffuser ring
B. Faulty turbocharger compressor ring
C. Insufficient cooling water flow
D. Clogged air intake filters
[单项选择]Which of the listed conditions can cause a diesel engine to use too much lube oil?()
A. Dirty lube oil filter
B. Too much piston ring wear
C. High lube oil viscosity
D. Low lube oil temperature
[单项选择]Which of the listed conditions can cause lacquer to be deposited on a piston skirt?()
A. High sulphur content fuel
B. High lube oil temperatures
C. High vanadium content fuel
D. Excessive piston slap
[单项选择]The blocking or absence of fire dampers can cause().
A. the accumulation of explosive gases
B. faster cooling of the fire
C. the fire to spread through the ventilation system
D. fixed foam systems to be ineffective
[单项选择]Blocking open or removing fire dampers can cause().
A. fixed foam systems to be ineffective
B. faster cooling of the fire
C. the accumulation of explosive gases
D. the fire to spread through the ventilation system
[单项选择]Moisture in a refrigeration system can cause ().
A. freezing the expansion valve closed
B. corrosion of system piping
C. improper temperature regulation
D. all of the above