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 3338Can 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?
644what 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
622Who are the manufactures those manufacturing 3Cx2.5sqmm FRLS cables. I heard about FRLS technology adopted only in wires useful for wirings
1203How many battery required for an 3kva online ups with 3 hrs back up with usage of 3 fans,3tube lights
1 1066sir, 3phase induction motor takes different pf and different KW in three phase while running,explain reason
605Post New Electrical Engineering Questions
explain different losses in a transformer.
What is evaporator & condencer & compressor
how ups works ? various parts of ups and working principle
How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?
What is zero of the system?
What is meant by bus bar protection?
When are the directional relays used?
what is the criteria for selecting fuse rating in 1phase, 2phase & 3phase welding sets?
What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?
why zero sequence impedance measurement is not applicable for single phase GT
3 phase induction motor connection star or delta while using ac drive motor is .75 to 5.5 kw
What are the material used for inductance coil?
Anybody know how schematic diagram for reverse power relay? RPR for generator protection
WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?
Can anyone explain me about the capacitor calculation
