Advertisements
Advertisements
प्रश्न
Name the quality which is measured in kWh.
Advertisements
उत्तर
Energy is measured in kWh
संबंधित प्रश्न
Name two places in india where electricity is generated from nuclear power plants.
What do you understand by the clockwise and anti clockwise moment of force?
State the condition when a force produces
(i) linear motion.
(ii) rotational motion, in a body.
What is a centripetal force?
State the condition when the work done by a force is negative. Explain with the help of examples.
A pump is used to lift 600 kg of water from a depth of 75 m in 10s. Calculate:
- The work done by the pump,
- the power at which the pump works, and
- The power rating of the pump if its efficiency is 40%. (Take g = 10m s-2).
`["Hint" : "Efficiency" = "useful power"/"power input"]`
State and define the unit of force in the S.I. system.
State the C.G.S. unit of work. How it is related to its S.I. unit?
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A car in neutral gear is coming down the slope.
A man raises a box of mass 50 kg to a height of 2 m in 20 s, while another man raises the same box to the same height in 50 s. Compare:
- the work done, and
- the power developed by them. Take g = 10 N kg-1
