Advertisements
Advertisements
प्रश्न
Unit of power used in mechanical engineering is ______.
विकल्प
watt
horse power
erg per second
Advertisements
उत्तर
Unit of power used in mechanical engineering is horse power.
APPEARS IN
संबंधित प्रश्न
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 work done .
An electric heater of power 3 kW is used for 10 h. How much energy does it consume? Express your answer in
- kWh,
- joule.
An electric pump has 2 kW power. How much water will the pump lift every minute to a height of 10 m?
If a 1200 W electric iron is used daily for 30 minutes, how much total electricity is consumed in the month of April?
Choose one or more correct alternatives.
Power is a measure of the ______.
- The rapidity with which work is done.
- Amount of energy required to perform the work.
- The slowness with which work is performed.
- Length of time.
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 = 10 m/s2)
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.
A man is throwing bricks of mass 2 kg onto a floor from a height of 2 m. Bricks reach the floor at a speed `2sqrt(10)` m/s. Man throws 10 bricks in a minute. If the power of man is W watt then `3/10` W is equal to ______ W.
Name the quantity which is measured in kWh.
