Basic Mechanical Engineering Training Pneumatics 3

The pressure unit 1Bar is equal to （ ）

压力单位1Bar等于 （ ）

• A)0.1Mpa

• B)1000Kpa

• C)100Kpa

• D)10Kpa

•Which is correct description of below cylinder?

以下气缸属于什么气缸？

• A)standard cylinder

  A)标准气缸

• B)guide cylinder

  B)滑台气缸

• C) Mechanically jointed rodless cylinder

  C)机械结合式无杆气缸

• D) Magnetically coupled rodless cylinder

  D)磁耦式无杆气缸

The main pollutants of the pneumatic system are?

气动系统主要污染物有 （ ）

• A)water

  A)水

• B)dust

  B)尘埃

• C)oil mist

  C)油雾

• D)CO²

The extension force of cylinder is ___ retraction force

气缸顶出的力___气缸推回的力

• A)More than

  A)大于

• B)Less than

  B)小于

• C)Equal

  C)等于

• D)None of all

  D)以上都不是

Which is the correct description of below valve?

图中属于什么电磁阀？

• A)manually operated valve

  A)手动阀

• B)2ways 5 ports valve

  B)2位5通电磁阀

• C) 2ways 3 ports valve

  C)2位3通电磁阀

• D) 3ways 2 ports valve

  D)3位2通电磁阀

•Which symbol is 2 ways 5 ports valve?

以下图标哪个是2位5通电磁阀

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Which symbol is 2 ways 5 ports closed center valve?

以下图标哪个是3位5通中封电磁阀

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•Which symbol is 2 ways 5 ports double pilot valve?

以下图标哪个是2位5通先导双线圈电磁阀

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What is the function of a flow control valve?

流量控制阀的功能是什么？

• A)flow control valve changes the direction of flow

  A)流量控制阀能改变方向

• B) flow control valve can adjust the flow rate

  B)流量控制阀能调节流量大小

• C)both A and B

  C) A和B

• D)none of the above

  D)以上都不是

Air pressure is 0.5MP, the bore diameter is 20mm,what is the force of cylinder?

气压0.5MP,气缸缸径20mm,气缸的推力是多少？

• A)157N

• B)100N

• C)200N

• D)314N