Advertisements
Advertisements
Question
Advertisements
Solution
The Sl unit of power is `watt'.
If 1 joule of work is done in 1 second, Watt = `(1J)/(1S)` the power is said to be 1 watt.
RELATED QUESTIONS
Rajan exerts a force of 150 N in pulling a cart at a constant speed of 10 m/s-1. Calculate the power exerted.
The expression of power P is
It takes 20 s for a girl A to climb up the stairs while girl B takes 15 s for the same job. Compare the power spent by then.
An electric pump has 2 kW power. How much water will the pump lift every minute to a height of 10 m?
Define power.
A ball with a velocity of 5 ms−1 impinges at an angle of 60˚ with the vertical on a smooth horizontal plane. If the coefficient of restitution is 0.5, find the velocity and direction after the impact.
An engine pumps up 200 kg of water through a height of 20 m in 10 seconds. If the efficiency of the engine is 80%. Calculate the power of the engine.
Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. The losses due to frictional force are 10% of the input energy. How much power is generated by the turbine? (g = 10m/s2)
Unit of power used in mechanical engineering is ______.
Name the quantity which is measured in kWh.
