Renewable Energy Engineering (2181910) MCQs

MCQs of Wind Energy

Showing 31 to 40 out of 81 Questions
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31.
Wind turbine uses
(a) kinetic energy
(b) potential energy
(c) thermal energy
(d) chemical energy
Answer:

Option (a)

32.
Forces acting of the wind turbine blades are
(a) viscous force
(b) inertia force
(c) lift & drag
(d) none of the above
Answer:

Option (c)

33.
Low solidity rotors use which of the following force for rotation
(a) drag
(b) lift
(c) centrifugal
(d) centripetal
Answer:

Option (b)

34.
At gradient height the shear force is
(a) zero
(b) minimum
(c) maximum
(d) none of the above
Answer:

Option (a)

35.
The rate of change of wind speed with height is called
(a) wind shear
(b) wind rose
(c) wind solidity
(d) none of the above
Answer:

Option (a)

36.
Which of these is the source of the wind, and the energy that can be tapped by wind turbines.
(a) The difference in solar heating of the Earth’s atmosphere and the land.
(b) The gravitational pull of the Sun and Moon on the Earth’s atmosphere.
(c) The kinetic energy of the rotation of the Earth.
(d) The kinetic energy of the rotation of the Earth.
Answer:

Option (d)

37.
What is the diameter of wind turbine blades?
(a) 320 feet
(b) 220 feet
(c) 80 feet
(d) 500 feet
Answer:

Option (b)

38.
How much power does the small scale wind machine generate?
(a) 18 KW
(b) 2 KW
(c) 12 KW
(d) 30 KW
Answer:

Option (b)

39.
A wind turbine extracts maximum power from wind, when the downstream wind speed reduce to
(a) on third that of up stream
(b) Half that of upstream wind
(c) two third that of upstream wind
(d) zero
Answer:

Option (a)

40.
Which part of the wind mill acts as a housing for the turbine?
(a) Wind Vane
(b) Shaft
(c) Wind mill head
(d) Turbine
Answer:

Option (c)

Showing 31 to 40 out of 81 Questions
1 2 3 4 5 6