When Neutral exceeds or equals the phase current in both
single phase * three phase system?
why the Parameters : Base Voltage & Maximum Voltage can't be equal in value in a VFD (Variable Frequency Drive) ? How much the base voltage would be lower than the maximum voltage ? If 400 V is the 3 phase output of a VFD ... then what should be the base voltage ? thanks a lot
what is black out?,what is brown out?
Transformer not operated in dc ! why?
How many types of fault occur in a 3-phase power system?
If I want to use capacitor banks at HT (11 KV) side for maintaining power factor then which type of capacitor should I use? Plz give me the specification?? (I am using 1250 Kva transformer (11 KV/433V)).
List few applications of d.c series motor?
What is Lockout Relay and what is use of it in electrical installation
What is the meaning of maximum demand
hai...... tis is Hemanth. jst now completed electrical engineering... i wanna to apper for ap tranco exam... plzz send me the previous q's paper link......thanx in advance.
We have one Energy meter for Measuring the voltage,current,power,energy(KWH,KVARH,KVAH) & power factor.The problem is that the meter does not show whether the PF is lagging or leading.So i want to know that is there any way or calculation to find out that whether the PF sign (lagging or leading) depending upon the above mentioned parameters?
What is the difference between sensitive earth fault and restricted earth fault in power transformers?
i need 24v dc from 230v ac supply how we can getit ? what are the devices &its rating requied for that ? plzz i need answer urgently .thank u