Advertisements
Advertisements
प्रश्न
Which one of the following statements about power stations is not true?
विकल्प
hydroelectric power stations use water to drive turbines
in a power station, turbines drive generators
electricity from thermal power stations differs from that produced in hydroelectric power stations
in hydroelectric power stations and thermal power stations, alternators produce electricity
Advertisements
उत्तर
Electricity produced in a hydroelectric power station is similar to electricity produced in thermal power plants.
Therefore, the answer is, (c) The electricity from a thermal power station differs from that produced in a hydroelectric power station.
APPEARS IN
संबंधित प्रश्न
Define 1 watt of power.
Find the energy in joules consumed in 10 hours by four devices of power 500 W each.
A body of mass 100 kg is lifted up by 10 m. Find :
(i) the amount of work done
(ii) potential energy of the body at that height (value of g = 10 m/s2)
How much is the mass of a man if he has to do 2500 joules of work in climbing a tree 5 m tall? (g = 10 m s−2)
Name the physical quantity whose unit is watt.
What is the power of a body which is doing work at the rate of one joule per second?
A body does 1200 joules of work in 2 minutes. Calculate its power.
Fill in the blanks with suitable words :
One watt is a rate of working of one ___________ per ___________.
Define power. Give the SI unit of power.
An electric motor raises a load of 0.2 kg, at a constant speed, through a vertical distance of 3.0 m in 2 s. If the acceleration of free fall is 10 m/s2, the power in W developed by the motor in raising the load is :
