Advertisements
Advertisements
प्रश्न
Give a reason for the following.
The efficiency of a machine is always less than 100%.
उत्तर
Efficiency of a machine is always less than 100% as output energy is always less than the input energy because some energy is lost to overcome friction.
APPEARS IN
संबंधित प्रश्न
A certain household has consumed 250 units of energy during a month. How much energy is this in joules?
Write true or false of the following statement.
One form of energy cannot be converted into another form.
Name the commercial unit of measurement of energy.
How many joules are there in one kilowatt-hour?
A certain household consumes 650 units of electricity in a month. How much is this electricity in joules?
The capacity that an object has for doing work is called ______.
What energy transfer happen in a car engine?
When a body falls freely towards the earth, then its total energy
Which one of the following is not the unit of energy?
Define kilowatt hour.
