Question 1
A Kaplan turbine is used in ________
A. Turbomachinery
B. Pressure drag
C. Aerodynamics
D. Automobiles
View Answer
Answer: Option 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.
Question 2
Kaplan turbine is an ______ reaction turbine
A. Inward flow
B. Outward flow
C. Radial
D. Axial
View Answer
Answer: Option 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.
Question 3
Kaplan turbine is an ________ type turbine
A. Pressure
B. Inward flow
C. Outward flow
D. Velocity
View Answer
Answer: Option B
Explanation:
Kaplan turbine is an inward flow reaction turbine. It means that the working fluid changes its pressure as it moves through the turbine and gives up its energy.
Question 4
Kaplan turbine is most commonly used in propeller turbines.
A. TRUE
B. FALSE
View Answer
Answer: Option A
Explanation:
Kaplan turbine is most commonly used in propeller turbines. Since, the Kaplan turbines have non-adjustable propeller vanes it is most commonly used. They are used in a wide rage if flow and for other commercial products.
Question 5
Kaplan turbine is needed to improve ________
A. Increase Pressure
B. Decrease temperature
C. Change volume
D. Increase efficiency
View Answer
Answer: Option D
Explanation:
Kaplan turbine is needed to improve efficiencies at low speeds. When we arrange turbine blades in multiple stages. It plays an essential role in turbines.
Question 6
Kaplan turbine works on________
A. Electrical energy
B. Hydro energy
C. Thermal energy
D. Chemical energy
View Answer
Answer: Option 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.
Question 7
Kaplan turbines rotates at a ________ rate
A. Increasing
B. Decreasing
C. Constant
D. Increasing and then decreasing
View Answer
Answer: Option 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.
Question 8
Nozzles in the Kaplan turbine move due to impact of ________
A. Water
B. Steam
C. Blade
D. Another nozzle
View Answer
Answer: Option 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.
Question 9
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
View Answer
Answer: Option 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.
Question 10
The Kaplan Turbine is an evolution of ________
A. Francis turbine
B. Pelton wheel
C. Parsons turbine
D. Curtis turbine
View Answer
Answer: Option 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.
Question 11
The outlet of the Kaplan turbine is through _______
A. Vane Blades
B. Moving pipeline
C. Draft tube
D. Pump
View Answer
Answer: Option C
Explanation:
The outlet of the Kaplan turbine is through draft tube. It is a specially shaped tube that helps to decelerate the water and recover its kinetic energy. It happens at a faster rate.
Question 12
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
View Answer
Answer: Option 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.
Question 13
The turbine does not have to be at the lowest point of water flow as long as the water in the draft tube is full.
A. TRUE
B. FALSE
View Answer
Answer: Option A
Explanation:
The turbine does not have to be at the lowest point of water flow as long as the water in the draft tube is full. A higher turbine located increases the suction and is imparted on the turbine blades by the draft tube.
Question 14
What is the dimension of thermal efficiency of a Kaplan turbine?
A. kg
B. m
C. kg/m
D. Dimensionless
View Answer
Answer: Option 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.
Question 15
What type of turbine is Kaplan?
A. Impulse
B. Reaction
C. Energy
D. Hydro
View Answer
Answer: Option 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.