What is the purpose of dynamometer?

What is the purpose of dynamometer?

Options:

a. to measure power of a machine
b. to measure force of a machine
c. to measure speed of a machine
d. all of the above

Correct Answer: d. all of the above

Explanation:

Dynamometer is a device which is used to measure power produced by any motor or any prime mover, force or speed of that prime mover. Dynamometer helps in measuring power required to run any engine as well as in measuring power produced by an engine.

The dynamometer which is used to measure how much power is needed to operate a machine or an engine, is called as driving dynamometer. When someone has a machine in his/her factory, it is important to know how much power will be needed to run the factory, then this driving dynamometer is used.

The dynamometer which is used to measure power produced by an engine, is called as absorption dynamometer. It absorbs the work produced by the engine and measures the same.