TURBINES

In a Kaplan turbine, what is the direction of water flow?

• a) Axial and then axial

• b) Radial and then axial

• c) Tangential and then axial

• d) Tangential and then radial

For which of the following values of available heads may Kaplan turbine be used?

• a) 250 m

• b) 100 m

• c) 80 m

• d) 50 m

In this type of low head turbine, the guide vanes are fixed to the hub of the turbine and are not adjustable. What is this type of turbine called?

• a) Francis turbine

• b) Kaplan Turbine

• c) Propeller Turbine

• d) Pelton turbine

Which of the following turbines will have the lowest number of blades in it?

• a) Pelton turbine

• b) Steam turbine

• c) Francis turbine

• d) Kaplan turbine

Kaplan turbine is an ______ reaction turbine

• a) Inward flow

• b) Outward flow

• c) Radial

• d) Axial

The outlet of the Kaplan turbine is through _______

• a) Vane Blades

• b) Moving pipeline

• c) Draft tube

• d) Pump

Turbine that consists of draft tubes is called as__________

• a) Impulse turbine

• b) Curtis turbine

• c) Rateau turbine

• d) Reaction turbine

Generally, the value of specific speed of Kaplan turbine is _____________ that of the Pelton turbine.

• lower than

• higher than

• same as

• unpredictable

The water from runner in reaction turbine is discharged into tail race through a draft tube which has ____________ cross sectional area.

• constant

• gradually decreasing

• gradually increasing

• uneven

__________ turbines are also called as parallel flow turbine.

• Radial flow

• Axial flow

• Both radial flow and axial flow

• None of the above