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oil sample dielectric test gives the insulation rupture voltage at 26 kv. is this transformer safe to be operated . The working voltage is 11 kv
2 4606We have one 500KVA transformer. We have tested REF relay and commissioned. After one and half year, due to some ground fault in one of the DB circuit Transformer tripped by REF relay. What will be cause and remedy. Please advise?
1 5369HARMONICS ARE ALWAYS IN INTEGER LIKE 2ND OR 3RD HARMONICS,NOT IN FRACTION LIKE 0.5 HARMONICS.....????????
2 4572what is resonance in electrical circuit and its effect? where we get high resonance and low resonance?
1 3277what is the formula for efficiency of francis turbine and generator for hydropower? what is best way to select francis turbine and generator?
HAL,
2499E.B sending end to receiving end 33kv ug cable laid 8Km,receiving end to ss1,ss2,ss3,ss4 all are Approx 800 Mtr,can go for 33KV to 430V or 33kv to 11kv in receiving end and 11kv to 430 near ss ,which one is good for technically and economically.
JLL,
1 4295Post New Electrical Engineering Questions
How to measure size of cable on a given load
what is invertor supply and raw powersupply
Star Delta Diagram with full description
What are the advantages of speed control using thyristor?
how much cable size required for 70 kilowatt load.
How it can worked plc based electrical system And which type of software using.
What are the advantages of hydropower?
Explain about p.t?
regarding safety what would u consider the most important rules to observe when inspecting electrical equipment?
what is mean by restructuring power system?
What Is Connection APFC Panel In Compony.
What is meant by RVT and NDR ? expansion and details of it
As we use capacitior bank in 3ph ckt for improvement of PF, why not we use capacitor in single phase domestric use, at our house their are many inductive equipments,like fan,mixer,tube choke,air conditioner they also draw PF... by using capacitor can they improve PF. if yes--what are advantage and how to connect a capactor in single ph,and which type of capacitor if no- what are disadvantages.
1. The DC generaror,s induced output emf is connected with a DC motor(as load). when increasing the load of the motor by using brake drum or any way. what are the parameters will changes in both motor and generator(voltage, current, resistance, frequency, speed, torque, power, flux etc...) 2. Similarly for AC generator and AC motor 3. similarly if using DC batteries instead of DC generator, What happens?
Please nybody say, weather the result of Bharat Oman is declared or not? Probable date of declare???????
