Advertisements
Advertisements
Question
The S.I. unit of power is ..........
Solution
The S.I. unit of power is watt.
APPEARS IN
RELATED QUESTIONS
The blades of a windmill sweep out a circle of area A.
- If the wind flows at a velocity v perpendicular to the circle, what is the mass of the air passing through it in time t?
- What is the kinetic energy of the air?
- Assume that the windmill converts 25% of the wind’s energy into electrical energy, and that A = 30 m2, v = 36 km/h and the density of air is 1.2 kg m–3. What is the electrical power produced?
The expression of power P is
A pump raises water by spending 4×105J of energy in 10s. Find the power of the pump.
If a 1200 W electric iron is used daily for 30 minutes, how much total electricity is consumed in the month of April?
A quarter horse power motor runs at a speed of 600 r.p.m. Assuming 40% efficiency, the work done by the motor in one rotation will be
The average work done by a human heart while it beats once is 0.5 J. Calculate the power used by heart if it beats 72 times in a minute.
Unit of power used in mechanical engineering is ______.
Name the quantity which is measured in kWh.
Name the quantity which is measured in eV.