What type of valve is used to direct the flow of hydraulic fluid?A.relief valveB.direction control valveC.stop valveD.pressure control valve

题目

What type of valve is used to direct the flow of hydraulic fluid?

A.relief valve

B.direction control valve

C.stop valve

D.pressure control valve

相似考题

1.Overheating of the hydraulic fluid in an electro-hydraulic anchor windlass can result from a/an( ).A.overload on the pump motorB.low fluid level in the reservoirC.low fluid viscosity around the shaft sealD.high oil level in the sump

2.Hydraulic machinery failures are commonly caused by contamination of the hydraulic fluid and ______.A.fluid frictionB.fluid turbulenceC.component misalignmentD.pressure surges

3.Pressure drop in an operating hydraulic system is developed ______.A.only by the pump as its primary functionB.by resistance to the fluid flow through the systemC.by the thermal input to the system's fluidD.solely(单独地) by the charge applied by the accumulators

4.If you install a new hydraulic hose in a hydraulic system, the hose must be long enough to allow for contraction to preventA.failure of the hydraulic hoseB.excessive flow through the lineC.friction in other areas of the hydraulic systemD.overheating of the hydraulic fluid

更多“What type of valve is used to direct the flow of hydraulic fluid?A.relief valveB.direction ”相关问题

  • 第1题：

    The storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the ______．

    A.Actuator

    B.Annulus

    C.Accumulator

    D.Annular preventer


    正确答案：C

  • 第2题：

    What causes cavitation in a centrifugal pump ________．

    A.Vapor pockets in the flow stream

    B.Rough impeller surfaces

    C.Worn wearing rings

    D.Heavy fluid in the flow stream


    正确答案：A

  • 第3题：

    单选题
    （）can be used to prevent hydraulic system overloaded or keep the pressure of oil outlet from pump constant.
    A

    Overflow valve

    B

    Reducing valve

    C

    Balancing valve

    D

    Reducing valve or balancing valve


    正确答案： D
    解析： 暂无解析

  • 第4题：

    单选题
    Hydraulic control check value is generally used to （） in the marine hydraulic mechanism.
    A

    control the back pressure of return oil

    B

    lock the oil lines under some conditions

    C

    change the direction of oil flow

    D

    act as relief valve


    正确答案： B
    解析： 暂无解析

  • 第5题：

    单选题
    Hydraulic pumps most commonly used in steering systems are of the （）.
    A

    lobe type

    B

    screw type

    C

    axial piston type

    D

    volute type


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    In the design of hydraulic piping and equipment consideration is given to minimize turbulence in the hydraulic fluid, as this will cause（）
    A

    molecular fluid vibration

    B

    energy losses

    C

    wide pressure variations

    D

    mechanical damage to control valves


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    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


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    An orifice-check valve placed in a hydraulic system is used to（）
    A

    regulate the fluid flow in either direction

    B

    restrict movement of hydraulic fluid in one direction, but allow free movement in the other direction

    C

    allow free movement of hydraulic fluid in both directions

    D

    allow a restricted fluid flow in one direction only


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Which of the following problems will occur if the internal drain at either end of a hydraulic, two-way, spool-type directional control valve cylinder were to become plugged?（）
    A

    The reservoir would become vapor bound

    B

    The valve would be placed in hydraulic lock

    C

    The spring loaded relief ports would open

    D

    The buffering chambers would be unable to function


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    A hydraulic accumulator is designed to（）.
    A

    store fluid under pressure

    B

    act as a fluid reservoir

    C

    provide overpressure relief

    D

    replenish fluid to a system


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    In a shell-and-tube type hydraulic fluid cooler, the amount of heat transferred from the hydraulic fluid to the cooling water depends upon（）
    A

    the temperature of the hydraulic fluid

    B

    the flow rate of the hydraulic fluid

    C

    the temperature of the cooling water

    D

    all of the above


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
    A

    Globe valve

    B

    Butterfly valve

    C

    Gate valve

    D

    Packless valve


    正确答案： D
    解析： 暂无解析

  • 第13题：

    In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open ________．

    A.Globe valve

    B.Butterfly valve

    C.Gate valve

    D.Packless valve


    正确答案：C

  • 第14题：

    What power source actuates a solenoid valve ________．

    A.Air pressure

    B.Hydraulic pressure

    C.Electric current

    D.Mechanical force


    正确答案：C

  • 第15题：

    单选题
    Pressure in an operating hydraulic system is developed （）.
    A

    only by the pump as its primary function

    B

    by resistance to the fluid flow through the system

    C

    by the thermal input to the systems fluid

    D

    solely by the charge applied by the accumulators


    正确答案： A
    解析： 暂无解析

  • 第16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 pressure

    B

    the pilot operated relief valve is used for controlling higher flows and pressure

    C

    the pilot operated relief valve is used for controlling lower flows and pressure

    D

    the controlling accuracy of direct acting relief valve is worse than that of the pilot operated relief valve


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    What type of valve is used to direct the flow of hydraulic fluid?（）
    A

    Relief valve

    B

    Direction control valve

    C

    Stop valve

    D

    Pressure control valve


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    What is the best way of stopping an over-speeding diesel engine?（）
    A

    Disconnect the battery cables from the starting motor

    B

    Drain the hydraulic fluid from the governor sump

    C

    Block the flow of cooling air to the radiator

    D

    Secure the fuel supply and block the air intake


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    The storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the（）.
    A

    actuator

    B

    annulus

    C

    accumulator

    D

    annular preventer


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    Overflow valve is used to （）
    A

    control the fluid flow through it

    B

    prevent the pressure before it over the specified valve

    C

    make the pressure after it steady

    D

    control the direction of oil flow


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    Compensated flow control or constant flow valves are used in hydraulic systems to（）
    A

    compensate for major leaks in the system

    B

    maintain the original fluid viscosity

    C

    allow for changes in pressure and temperature within the system

    D

    assure constant fluid temperature


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    Fuel injection uses the jet pump system and a Woodward type hydraulic （） is used to control engine speed.
    A

    controller

    B

    governor

    C

    instrument

    D

    apparatus


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    The direct acting mechanical governor used with some small diesel engines, controls fuel flow to the engine by（）
    A

    governor flyweight action on a pilot valve which controls fuel injection

    B

    governor flyweight motion acting on fuel controls through suitable linkage

    C

    positioning a butterfly valve in the fuel delivery system positioning

    D

    a servomotor piston attached to the fuel controls


    正确答案： C
    解析： 暂无解析

相关内容