Hydraulic Machinery

1. In hydroelectric power plant, it is the concrete structure that encloses the reservoir.

Penstock

Silt sluice

Dam

Tail race

2. A machine used to transport liquid from the point of low energy level to a point of high energy level.

Compressor

Pump

Water turbine

Blower

3. In hydropower system, a turbine wheel converting the kinetic energy of a striking water into movement which causes the turbine buckets or blades to rotate.

Impulse

Reaction

Kaplan

Francis

4. Using affinity laws on pumps, if the diameter will be doubled what would happen to the new head developed? H1 = 2 m.

Head will increase at factor of 6

Head will increase at factor of 4

Power will increase at factor of 6

Head will be doubled

5. Reynolds number for a laminar flow of fluid.

< 4000

> 2000

< 2000

= 2000

6. Determine the number of stages needed for a centrifugal pump if it is used to deliver 200 gpm of fluid at pump power of 5 hp. Each impeller develops a head of 30 ft.

4.25

5

6

7

7. Substances capable of flowing and which conform to the shape of their containers.

Pure substance

Liquids

Fluids

Air

8. Using affinity laws on pumps, if the diameter will be doubled what would happen to the flow rate? Q1 = 3 cu.m per sec

Head will increase at factor of 6

Capacity will increase at factor of 6

Power will increase at factor of 6

Capacity will be doubled

9. For an 1800 rpm pump, find the impeller diameter necessary to develop a head of 200 ft.

1.31 ft

2 ft

14.3 in

14.8 in

10. Type of flow of fluid in which Re = 2150.

Laminar flow

Turbulent flow

Critical flow

Transitional flow