ICSE Class 10 Answered

Q1:The voltage of the power generated at the generating stations is first stepped up before its transmission.Give reason. Q2:How does the thickness and length of a fuse wire depend on its current rating?

Asked by kaursukhjindersukh | 04 Sep, 2018, 07:56: PM

Expert Answer

1) If the voltage is increased, the current decreases. Thus, the current loss can be reduced through the long range transmission line. Hence, the voltage is stepped up before transmission.

2) The maximum current which fuse allows to pass through it is called current rating.

So the thickness and length of fuse depends upon the current rating. A thin fuse wire of low current rating of 5 A is used for electric wiring of fans and bulbs.

While thick fuse wire of higher current rating of 15 A is used for heavy current consuming appliances like washing machine, geyser, refrigerators and air conditioners.

Answered by Shiwani Sawant | 05 Sep, 2018, 06:00: PM