1. A turbine is a ________
a) Rotary mechanical device
b) Static pressure drop device
c) Electrical device
d) Static temperature device
Explanation: Turbine is a vortex related device. It means turbulence. Turbine is a rotary mechanical device. The energy generated from the turbine can be used to generate electrical power. It is used in jet engines.
2. Turbine converts _________
a) Work to energy
b) Energy to work
c) Work to Electricity
d) Work to pressure
Explanation: Turbine extracts energy and converts it into useful work. Turbine is a vortex related device. It means turbulence. Turbine is a rotary mechanical device. The energy generated from the turbine can be used to generate electrical power. It is used in jet engines.
3. Turbine extracts energy from________
a) Reaction ratio
b) Pressure ratio
c) Fluid flow
d) Volumetric ratio
Explanation: 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. The energy generated from the turbine can be used to generate electrical power. It is used in jet engines.
4. Inward flow reaction turbine enter through ______
a) Outer periphery
b) Blades
c) Inner periphery
d) Pressure angle
Explanation: Inward flow flow reaction turbine enter through outer periphery of the turbine. It provides a force at the outer curvature of the blades to provide an inward flow.
5.A turbine is a ________
a) Turbomachinery
b) Pressure drag
c) Aerodynamics
d) Automobiles
Explanation: A 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.Centrifugal flow is imparted when the__________
a) Reaction flow is negative
b) Reaction flow is positive
c) Efficiency is 100 percent
d) Reaction rate is negligible
Explanation: Centrifugal flow is imparted when the reaction flow is negative in its direction. This happens when the centrifugal head loses its relative velocity with the flow of water.
7. Where is the turbine not used?
a) Solar power
b) Windmill
c) Water wheels
d) Gas plant
Explanation: Turbine is not used in solar power plants. The source of energy in solar power plants is the sunlight. It falls on the solar plates during the day, which stores the energy and converts them into useful work.
8. In an inward flow reaction turbine the discharge _______
a) Increases
b) Decreases
c) Same
d) Independent
Explanation: In an inward flow reaction turbine the discharge of fluid decreases. Thus, making it different from an outward flow reaction turbine.
9. A working fluid contains kinetic energy only.
a) True
b) False
Explanation: A working fluid contains kinetic energy and potential energy. The fluid that flows and hits the turbine blades coverts kinetic energy into useful work. The flow can be either compressible or incompressible.
10.In impulse turbines with moving blades, there is no _________ in blades of the turbine.
a) Pressure change
b) Same pressure
c) Volumetric change
d) Pressure independent
Explanation: In impulse turbines, there is no pressure change in blades of the turbine. There is no pressure change that is developed in fluid or gas in the turbine blades. The turbine blades are in moving condition.