Under centrifugal pumps are the volute

1、The volute pump is one in which the im

The volute pump is one in which the impeller （）.Adischarges into a gradually widening channelBhas stationary diffuser vanesCproduces no kinetic energyDAll of the above are true

2、The advantage of a centrifugal pump as

The advantage of a centrifugal pump as compared with a reciprocating pump is that （）.Adischarge is continuousBit has no internal valvesCupon accidental closing of discharge valve, excessive pressure will not build upDall of the above are true

3、The various pumps and lines are （） to

The various pumps and lines are （） to some extent so that each pump can act as an alternative for another.AinterlockedBinterconnectedCinterferedDinteracted

4、Under rotary pumps are the gear, （）, c

Under rotary pumps are the gear, （）, cam-and-piston and screw types.AreciprocatingBdiffuserCturbineDvane

5、The capacity of a centrifugal pump can

The capacity of a centrifugal pump can be increased by the installation of a larger diameter impeller Another means of increasing the pump cap...

6、If the capacity of a centrifugal pump

If the capacity of a centrifugal pump decreases gradually over a long period of time, you should replace the （）.Apacking glandBmechanical sealsClantern ringsDwearing ring