单选题The purpose of the safety relief valves installed on an auxiliary boiler is to （）.A relieve excess fuel oil pressure during the “off” fire cycleB admit water to the dry pipeC throttle the forced draft fan output for proper combustionD reduce excess ste

题目

单选题

The purpose of the safety relief valves installed on an auxiliary boiler is to （）.

relieve excess fuel oil pressure during the “off” fire cycle

admit water to the dry pipe

throttle the forced draft fan output for proper combustion

reduce excess steam pressure in the boiler

相似考题

1.Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?A.Pressure-reducing valveB.Unloading valveC.Counterbalance valveD.Pressure-relief valve

2.How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free?A.With gooseneck ventsB.With warning signsC.With flame screensD.With pressure-vacuum relief valves

3.A cargo hose is marked with the ______．A.maximum working pressureB.bursting pressureC.safety relief valve settingD.maximum temperature

4.______ play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.A.MotorsB.Check valvesC.Safety valvesD.Reducing valves

更多“The purpose of the safety relief valves installed on an auxi”相关问题

第1题：

What is the purpose of pressure-vacuum relief valves ________．
A.Regulation of discharge pressure from cargo pumps
B.Maintaining constant velocity in cargo lines
C.Regulation of suction head on cargo pumps
D.To maintain a tank or void at atmospheric pressure

正确答案：D
第2题：

单选题
What is the purpose of pressure-vacuum relief valves? （）
A
Regulation of discharge pressure from cargo pumps
B
Maintaining constant velocity in cargo lines
C
Regulation of suction head on cargo pumps
D
To maintain a tank or void at atmospheric pressure

正确答案： C
解析：暂无解析
第3题：

单选题
Most hydraulic steering gears are fitted with relief valves which（）
A
function when the rudder is amidships
B
relieve excess whip pressure from the hydraulic oil system
C
protect the piping assembly from external rudder shock
D
relieve excessive telemotor pressure

正确答案： C
解析：暂无解析
第4题：

单选题
The safety valves are mounted in pairs to （） the boiler against overpressure.
A
use
B
release
C
protect
D
effect

正确答案： A
解析：暂无解析
第5题：

单选题
Which of the conditions listed could cause the cylinder relief valves on a large, low-speed, propulsion diesel engine to lift?（）
A
Plugged injector nozzles
B
Excessive fuel injection
C
Very late injection timing
D
Incorrect crankshaft clearance

正确答案： B
解析：暂无解析
第6题：

单选题
Overload protection on hydraulic system is provided by the use of （）.
A
stop valves
B
pressure relief valves
C
balance valves
D
regulating speed valves

正确答案： A
解析：暂无解析
第7题：

单选题
What is the purpose of the intake/exhaust valves in a diesel engine? （）
A
They regulate the combustion cycle
B
They supply cooling water
C
They synchronize the ignition spark
D
They supply and regulate the lubricant flow

正确答案： B
解析：暂无解析
第8题：

单选题
If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will（）
A
backfire through the air intakes
B
develop less power under load
C
have high firing pressures
D
lift its cylinder relief valves

正确答案： D
解析：暂无解析
第9题：

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

正确答案： D
解析：暂无解析
第10题：

单选题
（） supplies pilot air to control the cylinder air start valves.
A
An air compressor
B
An indicator cock
C
An air distributor
D
A safety valve

正确答案： C
解析：暂无解析
第11题：

单选题
What is the purpose of a relief valve?（）
A
to fill 2 tanks at the same time
B
to use pump at a higher pressure
C
to return liquid to suction side if discharge valve is closed
D
All of the above are true

正确答案： D
解析：暂无解析
第12题：

单选题
The purpose of the GMDSS is to（）safety of life and property at sea all over the world.
A
promote
B
improve
C
guarantee
D
both A and B

正确答案： B
解析：暂无解析
第13题：

All of the following steps are taken in starting a centrifugal pump，EXCEPT to ______．
A.Set the relief valve
B.Check the lubrication system
C.Vent the pump casing
D.Open the pump suction and discharge valves

正确答案：A
第14题：

单选题
Cargo pump relief valves are piped to the（）.
A
cargo pump pressure gauges
B
crossover lines interconnecting two pumps
C
suction side of pumps
D
atmosphere through pump vents

正确答案： D
解析：暂无解析
第15题：

单选题
The safety valves should be tested and adjusted when the boiler survey is （）
A
completed
B
carried out
C
cleaned
D
steamed

正确答案： C
解析：暂无解析
第16题：

单选题
Blow-off of the relief valves of the main cylinders during operation indicates （）.
A
the cylinder cover is cracked
B
the injector holes is clogged
C
the cams are not properly set
D
fuel pump is leaking

正确答案： C
解析：暂无解析
第17题：

单选题
All of the following steps are taken in starting a centrifugal pump，EXCEPT to（）.
A
set the relief valve
B
check the lubrication system
C
vent the pump casing
D
open the pump suction and discharge valves

正确答案： C
解析：暂无解析
第18题：

单选题
Blow-off of the relief valves of the engines cylinders may be caused by （）.
A
too low lead
B
water in fuel
C
too tight spring
D
leakage

正确答案： A
解析：暂无解析
第19题：

单选题
Before the oily water is installed on board ships, it must have （）
A
IOPP
B
type approval certificate
C
cargo ship safety equipment certificate
D
cargo ship safety certificate

正确答案： A
解析：暂无解析
第20题：

单选题
Safety valves on a boiler vent to the （）.
A
fuel tank
B
bilge
C
atmosphere
D
auxiliary exhaust line

正确答案： D
解析：暂无解析
第21题：

单选题
When air becomes trapped in the hydraulic fluid of a steering system, the （）.
A
rudder will respond sluggishly
B
hydraulic rams will over-speed
C
sight glass will show bubbles
D
ram relief valves will lift

正确答案： B
解析：暂无解析
第22题：

单选题
（） should be tested and adjusted when the boiler survey is carried out.
A
The boiler oil tank
B
The steam pipe
C
The fire side
D
The safety valves

正确答案： D
解析：暂无解析
第23题：

单选题
In some type of two-stroke engines, besides some small holes for（）, starting valve, safety valve, indicator cock, and central opening in each cylinder cover for mounting the（）
A
fuel valves；exhaust valve
B
exhaust valves；inlet valve
C
fuel valves；inlet valve
D
exhaust valves；fuel valve

正确答案： B
解析：暂无解析

niusouti.com

单选题The purpose of the safety relief valves installed on an auxiliary boiler is to （）.A relieve excess fuel oil pressure during the “off” fire cycleB admit water to the dry pipeC throttle the forced draft fan output for proper combustionD reduce excess ste

题目

相似考题

更多“The purpose of the safety relief valves installed on an auxi”相关问题

相关内容