Advertisements
Advertisements
प्रश्न
Define the term efficiency of a machine.
Advertisements
उत्तर
The ratio of the work done by the machine to the work done on the machine is called the efficiency of a machine
Efficiency =`"Output energy"/" Input energy"`
(Work done by a machine is called the output energy and the work done on a machine is called the input energy.)
APPEARS IN
संबंधित प्रश्न
Select the correct alternatives
When we rub our hands
Select the correct alternatives
When a bulb lights up on passing current, the change of energy is
Name the quantity whose unit is :
(a) kilowatt
(b) kilowatt-hour
A certain household consumes 650 units of electricity in a month. How much is this electricity in joules?
The commercial unit of energy is :
The capacity that an object has for doing work is called ______.
Running water possesses ______.
Find out the form of energy possessed by the following thing.
A rock on the top of a hill
What energy transfer happen in a car engine?
Which one of the following is not the unit of energy?
