In （） pump a closed discharge valve will not cause excessive pressure to build up. -题库考试答案搜索网

In （） pump a closed discharge valve will not cause excessive pressure to build up.

单选题

2022-01-03 01:35

A、gear
B、vane
C、screw
D、centrifugal

查看答案

正确答案

D

试题解析

标签：船舶辅助机械

感兴趣题目

The pump discharge pressure will be considerably higher than the pressure at the （）.

Through a （） pump, the liquid is transferred from the suction to the discharge by the mechanical variation of the volume of a chamber or chambers.

If a centrifugal pump were continually operated with the discharge valve closed, the （）.

If a centrifugal bilge pump were continually operated with the discharge valve closed the （）.

The valve on the discharge side of a cargo pump on a tanker will usually be a（）.

In a full flow type lube oil system, the bypass relief valve will lift due to （）

A relief valve for a cargo pump is generally installed（）.

If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.

A device fitted over the discharge opening on a relief valve consisting of one or two woven wire fabrics is called a flame（）.

A device fitted over the discharge opening on a relief valve consisting of one or two woven wire fabrics is called a（）.

A vessel is equipped with cross-connected deep tanks.In which situation should the crossconnection valve be closed?（）.

The discharge flow of a reciprocating pump is （）.

相关题目: When start a screw pump, the by pass valve should be （）.; A double suction centrifugal pump impeller has been installed in the reverse direction, and will （）.; Reducing the clearance between a valve stem and rocker arm will result in the valve （）; A common trouble with the fuel pump plunger or fuel valve spindle is （）.; A common trouble with the fuel pump plungers or fuel valve spindle is （）.; In （） pump a closed discharge valve will not cause excessive pressure to build up.; Sanitary waste matter will .(1)pass through a screen or cutters (2)come into contact with the bacteria in a tank (3)be discharged, normally without bacteria; If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?（）; A centrifugal pump attempting to develop flow against a closed discharge valve has a/an （）.; Increasing the speed of a centrifugal pump will result in an increase in its capacity in its capacityAnother means of increasing the capacity pump is to increase the（）; The discharge rate or capacity of a centrifugal pump will vary directly as the （）.; A ruptured diaphragm in a thermostatic expansion valve will cause the valve to （）.; A cracked diaphragm in a thermostatic expansion valve will cause the valve to （）.; When a refrigeration compressor is in the ‘off’ cycle, the thermal expansion valve will（）.; A thermostatic expansion valve is properly controlling evaporator superheatAdjusting this valve to lower the superheat will result in a/an （）.; An increase in rotor clearances in a rotary pump will （）.; An increase in the fuel injection pump discharge pressure can be caused by a/an _______.; Increasing the valve clearance between a valve stem and rocker arm, will result in the valve （）; Which of the valves listed should be used either in the fully opened or the fully closed position?（）; If the engine is naturally aspirated, or is a small high-speed type with a centrifugal turbocharger, the period of valve overlap（）,ie when both valves are（）, will be and the exhaust valve will close some 10°top dead canter（）.

广告位招租WX:84302438

题库考试答案搜索网

免费的网站请分享给朋友吧