Corona occurs between two transmission wires when they (a) are closely-spaced (b) are widely-spaced (c) have high potential difference (d) carry d.c. power
2 4851Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?
1075what size steel armoured cable is required to support 1500kva capacity. would 70mm squared be enough or would I need 90 or 120mm squared 3c plus earth
1027Who are the manufactures those manufacturing 3Cx2.5sqmm FRLS cables. I heard about FRLS technology adopted only in wires useful for wirings
1672How many battery required for an 3kva online ups with 3 hrs back up with usage of 3 fans,3tube lights
1 1827sir, 3phase induction motor takes different pf and different KW in three phase while running,explain reason
1074Post New Electrical Engineering Questions
I have finish diploma electronics and five years experience in electrical field in ht service how can i get c licensce or other electrical certificate
Why we use circular(Stepped) cross section in transformer core?
What do you understand by external characteristics of a d.c. Generator?
a starter used for squirrel cage induction motor?
how to calculate current and voltage in a same circuit?
Draw a SLD of DG distribution up to main LT panel?
What are the three constants associated with a steady state error?
In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]
1.what is the reason for transformer and lightning arrester blast in 33kv system
15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help
what is the function of statics switch in ups and tell me parts
3Cx240 & 3Cx300 sqmm Al. cable from lv side. What is the calculation for this cable??
what are the specifications we must look at to select a relay for any capacity motor?
What are the advantages of thermal power plant?
why incomer bay is required before transformer bay if there are more than 1 nos. of transformer bay.
