In a closed cooling system for a turbocharged, four-stroke/cycle diesel engine, fluctuating water pressure can be caused by ()
相似题目
-
Cavitation erosion in the cooling water system of a diesel engine usually occurs at the pump impeller, and on the waterside of the ()
-
The pH value of water in a diesel engine closed cooling water system should be maintained between ().
-
In a refrigeration system, if the cooling water to the condenser fails, the().
-
In a central cooling system, used in some modem ships, sea water is supplied to cool ()which will circulate to other individual cooler, greatly reducing the corrosion problems.
-
Which two file types must be included in a closed database backup taken with operating system commands?()
-
In a diesel engine cooling water system, a pH of 60 indicates a/an ().
-
In a closed cooling water system, which of the problems can cause the water pressure to fluctuate?()
-
If the operating element of a thermostatic valve installed in a diesel engine cooling system malfunctions, it may result in ()
-
Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce().
-
The compressor in an air-cooled condensing refrigeration system is short cycling on the high pressure cutout switch()
-
The main distribution duct in an air conditioning system which contains the cooling coils and filters is called the()
-
In a diesel engine cooling system, the high temperature alarm contact maker will be activated on excessively high water discharge temperature from the ()
-
() allows for expansion and water make up in the water cooling system.
-
The jacket water temperature in a diesel engine closed freshwater cooling system is normally controlled by ()
-
The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and ().
-
In a diesel engine exhaust system, the cooling of the exhaust gases below their dew point, will result in ()
-
In the closed cooling system, the water ().
-
The most serious effect of air trapped in a diesel engine jacket water cooling system is that it().
-
Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?()
-
If the coolant temperature of a closed cooling water system for a diesel engine gradually increases, the trouble usually is ()
-
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by ().
-
A cutoff valve in the fire-main system of a ship may be closed to protect the portion of the system on an exposed deck from().
-
With regard to the opening and closing of watertight integrity appliances not fitted with a remote operating control or alarm system, what must the Master or person in charge of a ship enter in the logbook?