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if power factor comes in leading & showing -0.95. Is there any effect on electrical system? if yes, then please tell me what would be the effects. & how long we keep power factor in leading. Keeping power factor in leading shows more KW & less KVA is it correct or not.
2 7284what is rotor earth fault protection scheme in hydro generator & what is dc field flashing ?
NHPC,
2 9313what is the difference between capacitive voltage transformer & inductive voltage transformer.
3 24449How to know the back up time for a 5KVA UPS which is connected to 15 nos. of computers? Is there any formula for this? pls. tell me.
HAL,
1 4114Generally at what power factor the electronic equipments like computer, TV, EPABX etc.,operates. Please tell me.
HAL,
1 4093what is the reason for indication of light in the earth lamps of main switchboard.if there is an earth why does one lamp get dim and the other two bright.
2345Which type of power plant is more easier to produce electrical power at economical condition?
HAL,
5 10540in three phase with neutral connection, what will happen,if the neutral is in open condition with single phase distribution panel
4 9956Post New Electrical Engineering Questions
In Indian Household, generally we receive 220V AC single phase supply. But AC has 2 phases, +ve & -ve. So in +ve half cycle current is flowing...so what happens in the -ve half cycle?? Please illustrate.
2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?
what is size of 3phase 4wire cable to be used for 11 ton ductable A.C and how to calculate cable size for different load
Salient pole alternator is more stable, why?
What is the Minimum winding resistance of motors ( small & big)? referance range
What are the advantages of the three-phase motor over single phase motor?
What is knee point voltage?
what is the difference between electrical and electronic choke?
On Which Pressure PRV is operated.
I need bhel previous year quetion papers for electrical engineering department.I searched but i could not find out
How could I get a certificate of competency as Electrical Supervisor? I have completed By BTech in Electrical this year(2012) for VJTI Mumbai Maharashtra. Is it compulsory to be produced while joining?
-What should be minimum value of insulation resistance and maximum value of earth resistance at any electrical instillation and what is method of testing the same.
Define cut-off rate?
If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?
how can motor both beasrings insulation resistance can be check?
