![]() | ![]() | ![]() |
![]() |
|
#1
| ||||
| | ||||
| الفيوز الفيوز A fuse is used to prevent overloading of electrical circuits. The fuse, which is made of material having a low melting point, utilizes the heating effect of an electric current. A fuse is placed in an electrical circuit and if the current becomes too large the fuse wire melts and so breaks the circuit. A circuit diagram symbol for a fuse is Problem : If 5 A, 10 A and 13 A fuses are available, state which is most appropriate for the following appliances which are both connected to a 240 V supply (a) Electric toaster having a power rating of 1 kW (b) Electric fire having a power rating of 3 Kw Solution: Power P =VI, from which, current I =P/V (a) For the toaster, current I =P/V=1000/240=4.1666 A Hence a 5 A fuse is most appropriate (b) For the fire, current I =P/V=3000/240=12.5 A Hence a 13 A fuse is most appropriate Ref. Electrical_Circuit_Theory_and_Technology_2E.pdf Link: http://rapidshare.de/files/21312336/BIRD__J.__2001_._Electrical_Circuit_Theory_and_Technology__2nd_ed._.ra r الفضل يعود إلي الأخ الذي طرح هذا الكتاب بالمنتدى في مشاركة( كتب جديدة و متنوعة) لاتنسونى في صالح دعاءكم |
|
#2
| ||||
| | ||||
| رد: الفيوز الفضل يعود إلي الأخ( sohbamody) الذي طرح هذا الكتاب بالمنتدى في مشاركة( كتب جديدة و متنوعة) |
|
#3
| ||||
| | ||||
| رد: الفيوز جزاك الله كل خير |
![]() |
| مواقع النشر (المفضلة) |
| يتصفح الموضوع حالياً : 1 (0 عضو و 1 ضيف) | |
| خيارات الموضوع | |
| طريقة العرض | |
|
|