The efficiency of electric generator is…………
a) 95%
b) 25%
c) 40%
d) 98%
The efficiency of hydroelectric power plant is...
a) 95%
b) 55%
c) 40%
d) 98%
The efficiency of wind generator is……….
a) 95%
b) 55%
c) 40%
d) 98%
The efficiency of automobile engine is………
a) 95%
b) 25%
c) 20%
d) 98%
In power road signs which form of energy is used?
a)
potential
b) electrical
c) mechanical
d) solar
Explanation: Solar energy can be used to power road signs. Photo voltaic cells convert the energy of light into electrical energy.
