Hydraulic Machines Questions and Answers - Workdone by Kaplan Turbine

1. Kaplan turbine works on________
a) Electrical energy
b) Hydro energy
c) Thermal energy
d) Chemical energy

Answer: c
Explanation: Turbine is a vortex related device. It means turbulence. Turbine is a rotary mechanical device. Kaplan turbine is also called as a water turbine. It works when the blades are adjustable.

2. Kaplan turbine is an ______ reaction turbine
a) Inward flow
b) Outward flow
c) Radial
d) Axial

Answer: a
Explanation: Turbine extracts energy and converts it into useful work. Kaplan turbine is an inward flow reaction turbine. It is one of the most efficient turbines to drive electricity.

3. The Kaplan Turbine is an evolution of ________
a) Francis turbine
b) Pelton wheel
c) Parsons turbine
d) Curtis turbine

Answer: a
Explanation: The Kaplan Turbine is an evolution of Francis turbine. It was invented for an essential purpose. It allowed efficient power production in low head applications. Thus, making it better than Francis.

4. What is the dimension of thermal efficiency of a Kaplan turbine?
a) kg
b) m
c) kg/m
d) Dimensionless

Answer: d
Explanation: Thermal efficiency in thermodynamics is a dimensionless performance. It is a device that is used to measure thermal energy. It is mainly used in internal combustion engines.

5. A Kaplan turbine is used in ________
a) Turbomachinery
b) Pressure drag
c) Aerodynamics
d) Automobiles

Answer: a
Explanation: A Kaplan turbine is a turbomachinery. Turbine extracts energy from fluid flow and converts it into useful work. Turbine is a vortex related device. It means turbulence. Turbine is a rotary mechanical device

6.The head of the Kaplan ranges from ______
a) 100 to 200 m
b) 250 to 300 m
c) 10 to 70 m
d) 0 m

Answer: c
Explanation: The head of the Kaplan ranges from 10 meters to 70 meters. A Kaplan turbine is a turbomachinery. Turbine extracts energy from fluid flow and converts it into useful work. Turbine is a vortex related device.

7. Nozzles in the Kaplan turbine move due to impact of ________
a) Water
b) Steam
c) Blade
d) Another nozzle

Answer: b
Explanation: Nozzle is moved due to the impact of steam. When the steam hits the nozzle, the pressure is decreased and the temperature is increased.

8. The power output of Kaplan turbine ranges from__________
a) 5 to 200 MW
b) 1000 to 2000 MW
c) 2000 to 3000 MW
d) 5000 and above

Answer: a
Explanation: The power output of Kaplan turbine ranges from 5 mega Watt to 200 mega Watt. It has got runner diameters which ranges from 2 meters to 11 meters. It varies from place to place.

9. Kaplan turbines rotates at a ________ rate
a) Increasing
b) Decreasing
c) Constant
d) Increasing and then decreasing

Answer: c
Explanation: Kaplan turbines rotates at a constant rate. A Kaplan turbine is a turbomachinery. Turbine extracts energy from fluid flow and converts it into useful work. Turbine is a vortex related device.

10. What type of turbine is Kaplan?
a) Impulse
b) Reaction
c) Energy
d) Hydro

Answer: b
Explanation: Kaplan turbine is a reaction turbine. It extracts energy from fluid flow and converts it into useful work. Kaplan turbine is a vortex related device.