Recent content by adool_617

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Hello guys , i have a question related to cable mechanical properties you know power cables have armouring , which enhance the mechanical properties for the cable the question is : what is the difference between the Tape armour and wire armour i know the difference in how they look like...

Hello as our colleagues says in the above replies , copper losses is equivalent to I^2 X R but what type of application are you going to calculate copper losses for ?? for example , if you are going to calculate copper losses for a flat busbar just calculate the resistance by knowing...

Hello i need to know , does the polarity of the current transformer affects the power measurements in AC systems, and if it does , how it affects the power measurements knowing that in measuring power we use the RMS values anybody have any idea about this ?? that's to say , if you have...

please i need your help to answer the following question what the difference between transformer Dyn11 and Dyn1 i know the difference is in leading and lagging of line to line voltages of primary and secondary but the question is , when i should use Dyn11 or Dyn1 as a must in the...

well , actually after doing some search i found this: the minimum breaking current is the minimum current that can cause the fuse to disconnect for example assume the normal current for a fuse is 10 A and the minimum breaking current is 15 A , so between this region the fuse cannot completely...

Dear all , i have an important question which i need answer for it , if you look at a catalog for fuses you will find the fuse rated current which for example is 10 A and you will find a value called minimum breaking current and it is usually higher than the rated current for our example...

thank you all for your contribution in this thread , i am very glad i agree with you russ because actually i thought same as you but i think there is something called evaporator valve or something around this name a friend of mine but in the field of mechanical power talk with me...

thank your russ for answering and i want to ask you some explanations in order to understand let's say the ambient temperature is now 35 and i adjust my airconditioner at 18 so it will work at full load in order to make the ambient temperature to reach 18 say it works for 1 hour...

thanks jobrag for your answer so you think airconditioner is always working at full load , but according to setting it will depend how long it will be working for example for 18 degrees it will work continously for 20 minutes , but for 22 degrees it will work continously for 10 minutes [ time...

hi all , i need to find an answer to this question you know of course airconditioners draws a high current compared to other devices in apartments , my question is : assume you have an air conditioner 1.5 hp and the maximum cooling you can get from it is to make temp at 18 degree ...

Dear all members , i am glad to open a new topic well , let's get into the main point quickly you know that transformers is build on the idea that energy is transferred from one winding to the other by the transferring of flux form primary winding to secondry winding well ,to make the...

i have a question and i will be glad if anyone could help you know if a current flow in resistance , a power is consumed =(I^2)*R and if this current flows for an hour , this will produce energy and it's quantity is watt*hour my question is , if the temperature of the resistor was 20...