$1.$ Maximum pump efficiencies for small centrifugal pumps can be as low as$(1)$a$.80\%$b$.50\%$c$.70\%$d$.$ None of the above $2.$ The flow rate meter used in this prac was$(1)$a$.$ Venturi meterb. Magnetic flow meterc. Rotameterd. Orifice meter $3.$ The processed liquid was$(1)$a$.$ Gasb. Limec. Waterd. oil $4.$ Non$-$ideal pump efficiencies are caused by $(1)$a$.$ Velocity head, shock losses, shaft friction on packing and bearings, and internal leakage.b$.$ Cavitation, shaft friction on packing and bearings, and internal leakage as well shock losses.c$.$ Fluid friction, shock losses, shaft friction on packing and bearings, and internal leakage.d$.$ All the above $5.$ The theoretical head produced by a centrifugal pump depends on the $(1)$a$.$ Impeller velocity, velocity head and rotation of impeller.b$.$ Impeller speed, the radius of the impeller, and the velocity of the fluid leaving the impeller.c$.$ Diameter of the impeller, velocity head and rotation of impellerd. All the above $6.$ Electrical power $($Pe$)$ is the power input to the motor as measured by the $(1)$a$.$ Kilojoulesb. Wattmeterc. Metersd. All the above$7.$ For the motor supplied, measured motor losses $($at zero load$)$ are $(1)$a$.500$W at $1450$ rpm and $400$W at $2900$ rpmb$.400$W at $2900$ rpm and $500$W at $1450$ rpmc$.400$W at $1450$ rpm and $500$W at $2900$ rpmd$.$ None of the above $8.$ The velocity $($Dynamic$)$ Head is measure in units of:$(1)$a$.$ m$/$sb$.$ mc$.$ m$/$s$2$d$.$ None of the above $9.$ The equation for velocity head is $(1)$a$.$ H $=$ hsd hssb$.$ H $=$ u$2/2$gc$.$ u$/2$gd$.$ None of the above $10.$ Density of the fluid is measured in units of:$(1)$a$.$ J$/$sb$.$ Kg$/$m$3$c$.$ g$/$cm$3$d$.$ Both b$.$ and c$.$