Qualification > Sciences

ALL PHYSICS DOUBTS - POST HERE !!

<< < (10/480) > >>

~HyDrOgEn~:
thanks another quetion , what is meant by the term efficency!

Amr Fouad:

--- Quote from: ~HyDrOgEn~ on April 18, 2010, 10:40:22 pm ---thanks another quetion , what is meant by the term efficency!

--- End quote ---

efficiency is the percentage of useful energy ouytpu.It equals:

(usefyl energy output/total energy input) x 100%

got that?

~HyDrOgEn~:
Yeah thanks! ;D

holtadit:
Bimetallic strips ... how do i know which way it bends ?

Consider the scenario where a layer of invar is above copper (expands more than invar).

How and why would it bend ? Any hard and fast rule to rembr this stuff ?

Saladin:
It would bend upwards.

This is because consider a circle, the outer layer will be longer than the inner layer. Similarly, because coppe expands more, it will be the outer later, and thus the bimetallic strip will bend upwards.

hope dat helps.

Navigation

[0] Message Index

[#] Next page

[*] Previous page