MCQs of Introduction to Wind and Solar Power Generation (Power System - I - 3140914)

Showing 111 to 120 out of 137 Questions

111.

The torque causing the rotation of a rotor is due to the

112.

Torque causing the rotation of wind turbine shaft depends upon

113.

The cut-in velocity in wind power machine is

(a)	Maximum wind speed at which a wind turbine is designed to operate
(b)	Minimum wind speed at which a wind turbine is designed to operate
(c)	Wind speed at which the wind turbine stops functioning
(d)	Velocity of the rotor

114.

Which source of renewable energy is caused by uneven heating of the earth’s surface

115.

With increase in height wind speed

116.

Wind power plants are required to have a large rotor size for a large power output due to

(a)	Low power density of air stream
(b)	Lift force acting perpendicular to the direction of wind flow
(c)	Lift force being more than drag force
(d)	Drag force acting perpendicular to lift force

117.

Which of the following forces acts on the blade of a wind turbine rotor?

118.

Wind machine with Darrious type of rotor is a

(a)	Vertical axis machine
(b)	Horizontal axis machine
(c)	Machine that can spin in one direction only
(d)	None of above

119.

Power coefficient in a wind energy conversion machine is the ratio between

(a)	Power of the wind rotor and power available in the wind
(b)	Wind velocity and rotation per minute of the rotor
(c)	Wind density and the density of the density of rotor
(d)	Wind power and the power output of the turbine

120.

During the day the surface wind flows

Showing 111 to 120 out of 137 Questions