Advertisements
Advertisements
प्रश्न
Give a reason for the following.
The efficiency of a machine is always less than 100%.
Advertisements
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
Fill in the blank
Cooking gas converts _______ energy into heat energy.
What is potential energy ? State its unit.
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?
If the energy of a ball falling from a height of 10 metres is reduced by 40%, how high will it rebound?
Can you tell?
What should be taken into account for measuring work?
Which one of the following requires wind energy?
Write the type of energy.
Which one of the following is not the unit of energy?
The work done on an object does not depend upon the
