更多"The amount of fluid delivered by a "的相关试题:
[单项选择]The amount of fuel delivered by a helical plunger fuel injection pump is controlled by （）
A. varying the pump discharge pressure
B. varying the pump return pressure
C. rotation of the pump plunger
D. rotation of the pump barrel
[单项选择]The amount of fluid delivered by a screw pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the rotor
C. either A or B
D. None of the above is tree
[单项选择]The amount of fluid delivered by a gear pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the rotor
C. either A or B
D. None of the above is true
[单项选择]The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
A. specific gravity
B. viscosity
C. S E number
D. hydrolytic stability
[单项选择]The amount of fluid delivered by a positive displacement pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the driving rotor
C. either A or B
D. None of the above is tree
[单项选择]The amount of fluid delivered by a reciprocating pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the piston
C. either A or B
D. None of the above is tree
[单项选择]The amount of fluid delivered by a centrifugal pump can be regulated by （）.
A. throttling the pressure line
B. changing the speed of the rotor
C. either A or B
D. None of the above is tree
[单项选择]The （） pump discharges a nearly constant amount of liquid regardless of pressure.
A. mixed-flow
B. axial-flow
C. centrifugal
D. displacement
[单项选择]The pump has a constant stroke and the amount of fuel delivered is regulated by rotating （） which has a specially arranged helical groove cut into it.
A. the pump cylinder
B. the pump cam
C. the pump plunger
D. the pump miler
[单项选择]In a jerk pump, the amount of fuel that will be forced through the spray nozzle on each upward stroke of the plunger depends on （）
A. the pump supply pressure
B. the slope of the fuel cam
C. how the plunger is rotated
D. the number of sleeve segments engaged with the rack
[单项选择]Which pump is the self-priming pump?（）
A. turbine
B. centrifugal
C. ejector
D. mixed flow
[单项选择]The （）pump is usually used as the bilge feed pump to an oily water separator.
A. turbine
B. screw
C. vane
D. ejector
[单项选择]A （） pump is that where the volume of the pump chamber is alternately increased to draw the liquid in and then decreased to force the liquid out.
A. injector
B. positive displacement
C. centrifugal
D. centripetal
[单项选择]A mixed-flow pump is a （） pump classified by the working principle.
A. self priming
B. positive displacement
C. reciprocating
D. impeller
[单项选择]Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by（）
A. permanent loss of pump suction
B. worn shaft seals
C. high level in the oil sump
D. low motor RPM
[单项选择]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
[单项选择]If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should （）.
A. add fluid that is the same color as the fluid in the reservoir
B. add turbine oil because it is always a good substitute
C. add any oil that has the same viscosity as the hydraulic fluid
D. check the winch manufacturers instruction book
[单项选择]Air trapped in the hydraulic fluid of a steering system would be indicated by（）
A. an improper rudder response
B. hammering noises in the equipment or transmission lines
C. popping or sputtering noises
D. all the above
