In Hydroelectric power plant in the energy from moving water is converted into electric powered what kind of energy transformed occurs when the energy is converted

a) potential energy to kinetic energy  

b) kinetic energy to mechanical energy  

c) mechanical energy to electrical energy

Explanation:

In the hydroelectric power plant, following energy conversions take place -  

a)When water falls from great heights , its potential energy is converted to kinetic energy  

b)When fast moving water turns the blade of turbine, then its kinetic energy is converted into mechanical energy  

c)When the rotating turbine rotate the Electromagnetic coil of generator, the mechanical energy is converted into electrical energy.  

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

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