Advertisements
Advertisements
प्रश्न
The power of a motor pump is 2 kW. How much water per. the minute the pump can raise to a height of 10 m? (Given g = 10m s−2)
उत्तर
Here, power of the motor pump, P = 2 kW
= 2000 W
Height to which water is raised, h = 10 m
As `("mgh")/"t"` or `"pt"/"gh"`
∴ Water raised per minute (= 60 s)
`(2000 xx 60)/(10 xx 10)`
= 200
APPEARS IN
संबंधित प्रश्न
What are the various energy transformations that occur when you are riding a bicycle?
State the energy changes in the following while using a microphone.
Fill in the blank
Green plants convert _________ energy into chemical energy.
State the energy changes that occur in the following :
An electric generator (or dynamo).
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in a loaded truck when started and set in motion.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in the burning of a match stick.
State the energy changes in the following case while in use:
A petrol engine of a running car
State the law of conservation of energy.
What is law of conservation of energy?
If an electric iron of 1200 W is used for 30 minutes every day, find electric energy consumed in the month of April.
