find the equivalent fraction of 3 out of 5 , they are 6 of 10, 9 of 15 etc. Luckily in this case we have got one with denominator 10, that is 6 out of ten. Hence it is 0.6. If we don't get the denominator as 10, we should try to get 100 or … Read more

You need to find out the temperature that you wish to maintain inside the room to be comfortable. Then that temperature minus the ambient temperature will be the amount of temperature raise, you need to increase by heating. Now the room can be big or small, hence the volume of the air inside to be … Read more

AC stands for alternate current, DC stands for direct current. Alternate current alternates between positive and negative and the number of times it does per minute is called cycles. Depending on the number of poles in the motor, the speed is constant. Where as in a DC drive, the speed control is simple, by introducing … Read more