网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
A relief valve for a cargo pump is generally installed（）.
A
after the discharge valve
B
between the pump and discharge valve
C
after the suction valve
D
between the pump and suction valve
参考答案
参考解析
解析：
暂无解析
更多 “单选题A relief valve for a cargo pump is generally installed（）.A after the discharge valveB between the pump and discharge valveC after the suction valveD between the pump and suction valve” 相关考题
考题
If the head pressure of a reciprocating refrigeration compressor is excessiveA.the relief valve should open before the high pressure cutoutB.the relief valve should open and allow the excess refrigerant to flow to the receiverC.the high pressure cutout switch should operate before the relief valve opensD.you should close the discharging valve
考题
The valve on the discharge side of a cargo pump on a tank vessel will usually be a ______.A.butterfly valveB.spectacle valveC.check valveD.globe valve
考题
A cargo hose is marked with the ______．A.maximum working pressureB.bursting pressureC.safety relief valve settingD.maximum temperature
考题
Cargo pump relief valves are piped to the ______．A.cargo pump pressure gaugesB.crossover lines interconnecting two pumpsC.suction side of pumpsD.atmosphere through pump vents
考题
Valves on steam-smothering lines to cargo tanks shall be set with ______．A.The master control valve shut and valves to individual cargo tanks shutB.The master control valve open and valves to individual cargo tanks shutC.The master control valve shut and valves to individual cargo tanks openD.All valves open
考题
What is the purpose of the relief valve of a cargo pump ________．A.Provides for the removal of vaporsB.Allows two or more tanks to be filled at the same timeC.Provides for the emergency shutdown of the pumpD.Permits the return of cargo to the suction side of the pump
考题
Which statement is TRUE concerning deep well self-priming pumps ________．A.When loading oil cargo，it is always loaded via the discharge line through to the pump until the tank is topped offB.Stripping systems are generally eliminated for the purposes of cargo handlingC.In recent years deep well pumps have become increasingly unpopular in product tankers and medium size crude shipsD.There is no danger of damaging the pump from overheating
考题
单选题When the desired rudder angle is attained by a typical double mm electro-hydraulic steering gear,the（）.A
ram relief valves bypass oil to stop rudder movementB
six-way valve shifts to the neutral flow positionC
steering pump electric motor is de - energized by the transfer switchD
follow-up gear takes the hydraulic pump off stroke
考题
单选题When the helm demands a 20°right rudder movement from an electro-hydraulic steering gear, which of the listed actions will be the FIRST action to happen when this rudder position is attained?（）A
The six-way valve opensB
The steering service pump motor is stoppedC
The follow-up gear takes the pump off strokeD
The cylinder relief valves bypass oil to the suction side the pump
考题
单选题（） at the end of the distribution pipe ensures that adequate pressure is maintained by the pump.A
A relief valveB
An alarmC
A pressure gaugeD
A non-maim valve
考题
单选题Cargo pump relief valves are piped to the（）.A
cargo pump pressure gaugesB
crossover lines interconnecting two pumpsC
suction side of pumpsD
atmosphere through pump vents
考题
单选题Hydraulic control check value is generally used to （） in the marine hydraulic mechanism.A
control the back pressure of return oilB
lock the oil lines under some conditionsC
change the direction of oil flowD
act as relief valve
考题
单选题Which one of following statement is not true concerning the suitable sites of the direct acting relief valve and the pilot operated relieve valve?（）A
the direct acting relief valve is used for controlling lower flows and pressureB
the pilot operated relief valve is used for controlling higher flows and pressureC
the pilot operated relief valve is used for controlling lower flows and pressureD
the controlling accuracy of direct acting relief valve is worse than that of the pilot operated relief valve
考题
单选题When loading bulk liquid cargo，what is the FIRST action you should take if a cargo valve jammed open?（）A
Trip the pump relief valveB
Order the dock man to shut downC
Call the owner，operator，or terminal supervisorD
Run out the vessel's or terminal's fire hose
考题
单选题A cargo hose is marked with the（）.A
maximum working pressureB
bursting pressureC
safety relief valve settingD
maximum temperature
考题
单选题In a full flow type lube oil system, the bypass relief valve will lift due to （）A
a clogged filter elementB
excessive lube oil pump discharge pressureC
excessive lube oil flowD
excessively hot lube oil
考题
单选题All of the following steps are taken in starting a centrifugal pump，EXCEPT to（）.A
set the relief valveB
check the lubrication systemC
vent the pump casingD
open the pump suction and discharge valves
考题
单选题If the head pressure of a reciprocating refrigeration compressor is excessive, （）.A
the relief valve should open before the high pressure cutoutB
the relief valve should open and allow the excess refrigerant to flow to the receiverC
the high pressure cutout switch should operate before the relief valve opensD
you should close in on the suction valve
考题
单选题The usual symptoms of cavitation in a centrifugal pump is （）.A
noise and vibrationB
an increase in discharge pressureC
an increase in suction pressureD
lifting of the relief valve
考题
单选题If the head pressure is too high,（）A
the relief valve should open before the high-pressure cutoutB
the relief valve should open and let excess refrigerant go to receiverC
the high-pressure cutout switch should operate before the relief valve opensD
close in on the suction valve
考题
单选题Your tanker is designed to carry anhydrous ammonia in bulk.The keel was laid in 1980.Which statement concerning the carriage of this cargo is TRUE（）.A
A flammable gas detection system must be installed in each cargo pump roomB
Tanks may not be located on deckC
Carriage of this cargo is authorized by issuance of an IMO CertificateD
Aluminum and copper alloys are prohibited from being in valve parts in contact with the cargo
考题
单选题In an electro-hydraulic steering gear system, when will the variable displacement pump be placed on stroke?（）A
When the helm is at any angle other than amidshipsB
When the six-way valve is openedC
When the ram relief valves liftD
When the redder angle is different from the position of the helm
考题
单选题The valve on the discharge side of a cargo pump on a tanker will usually be a（）.A
butterfly valveB
spectacle valveC
check valveD
globe valve
考题
单选题What is the purpose of a relief valve?（）A
to fill 2 tanks at the same timeB
to use pump at a higher pressureC
to return liquid to suction side if discharge valve is closedD
All of the above are true
考题
单选题The diesel engine valve subjected to most severe conditions of service is the （）.A
cylinder exhaust valveB
air starting valveC
air inlet valveD
cylinder relief valve
考题
单选题The valve on the discharge side of a cargo pump on a tank vessel will usually be a（）.A
butterfly valveB
spectacle valveC
check valveD
globe valve
考题
单选题If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.A
a low load on the unitB
a clogged pump suction strainerC
a blockage in the line between the pump and hydraulic motorD
the hydraulic motor turning too fast
热门标签
最新试卷
