1061. Lower BWG means ___________ of the tube:
A. Lower thickness
B. Lower cross section *
C. Outer diameter
D. Inner diameter
1062. Cavitation occurs in a centrifugal pump when the suction pressure is :
A. At the temperature *, less than the liquid’s vapour pressure *
B. More than the liquid’s vapour pressure at that temperature
C. Equal to the vapour pressure
D. Equal to the developed head
1063. Cavitation can be prevented by :
A. Suitably designing the pump
B. Maintaining a suction head pressure that is sufficient to exceed the vapour pressure *
C. Maintaining suction head= developed head
D. Keeping the suction head below the vapour pressure at all times
1064. Priming is needed in a ________ pump:
A. Reciprocating
B. Gear
C. Centrifugal *
D. Diaphragm
1065. A centrifugal pump can only draw water up to this depth:
A. Depending on the pump’s speed
B. Depending on the pump’s speed
C. 34 Feet *
D. 150 Feet
1066. Boiler feed water pump is usually a ___________ pump:
A. Reciprocating
B. Gear
C. Multistage centrifugal *
D. Diaphragm
1067. Plunger pumps are used for :
A. Higher pressure *
B. Slurries
C. Viscous mass
D. None of these
1068. Molten soap mass is transported by a______ pump:
A. Diaphragm
B. Reciprocating
C. Gear *
D. Centrifugal
1069. The following pump is used to transport molten sodium in the fast breeder reactor:
A. Reciprocating
B. Plunger
C. Electromagnetic *
D. Gear
1070. To deal with more modest amount of liquid at higher release pressure, utilize a __________ siphon:
A. Reciprocating *
B. Centrifugal
C. Volute
D. Rotary vacuum