The static suction head of is the （）

Adistance of the suction liquid level above the line of the pump
Bdistance the suction liquid level is below the center line of the pump
Cforce necessary to overcome frictional losses in the pump and piping
Damount in inches of mercury the total suction head is below atmospheric pressure

参考答案

参考解析：

分类：船舶电气与船舶安全题库

The suction - force principle of operation is a typical characteristic of （）.Acentrifugal pumpsBjet pumpsCpropeller pumpsDreciprocating pum

2、Pitting in the suction areas of a cent

Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.AcavitationBelectrolysisCabrasionDcorrosio

3、In the suction stroke air is induced i

In the suction stroke air is induced into the cylinder （）In the compression stroke the air is compressed.Aby an fuel valveBthrough an inlet valveCwith an exhaust valveDfrom an outlet valve

4、The pressure head of a pump is given i

The pressure head of a pump is given in the unit of （）.AkgBMPaCmeter fluid columnDNone of the above is true

5、The head of the bend is the（）.

The head of the bend is the（）.Atop or upstream beginning of a bendBbottom or downstream beginning of a bendCmidpoint or center radius of a bendDcenter line or apex of a bend

6、The emergency bilge suction valve is t

The emergency bilge suction valve is typically used （）.Ato inject cleaning additives when the bilges are extremely dirtyBwhen the main condense...

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