TURBINES 41-50 Flashcards
What is the main advantage of using a wind
turbine for electricity generation?
a) Low environmental impact
b) High efficiency
c) Continuous power generation
d) Ability to operate in all weather condition
a) Low environmental impact
Which of the following is a characteristic of a
reaction turbine?
a) It operates at supersonic speeds
b) It requires a low head of fluid
c) It changes the direction of fluid flow
d) It has a fixed geometry
c) It changes the direction of fluid flow
What is the purpose of the guide vanes in a
turbine?
a) To increase pressure
b) To decrease pressure
c) To direct fluid flow
d) To extract energy from the fluid
c) To direct fluid flow
Which type of turbine is commonly used in
marine propulsion?
a) Pelton turbine
b) Kaplan turbine
c) Francis turbine
d) Turgo turbine
b) Kaplan turbine
What is the main advantage of using a reaction
turbine over an impulse turbine?
a) Higher efficiency
b) Lower initial cost
c) Ability to operate at low heads
d) Greater simplicity
a) Higher efficiency
Which of the following factors does NOT affect
the efficiency of a steam turbine?
a) Steam temperature
b) Steam pressure
c) Turbine speed
d) Ambient humidity
d) Ambient humidity
What is the term for the speed at which a turbine
operates most efficiently?
a) Maximum speed
b) Critical speed
c) Optimal speed
d) Rated speed
c) Optimal speed
Which type of turbine is commonly used in smallscale hydropower applications?
a) Pelton turbine
b) Kaplan turbine
c) Francis turbine
d) Crossflow turbine
d) Crossflow turbine
What is the primary disadvantage of using a
steam turbine for power generation?
a) High maintenance requirements
b) Limited fuel availability
c) Environmental pollution
d) Slow response to load changes
d) Slow response to load changes
Which of the following is NOT a component of a
wind turbine?
a) Rotor
b) Tower
c) Nozzle
d) Generator
c) Nozzle
