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why would the rotor rotate at sub synchronous speed against the direction of rotating flux when d rotor of 3 phase IM is connected to 3 phase balanced supply and the stator windings are shortcircuited ??
2100How much UG cable size should i use so as to accomodate a ground + 2floors house. A 1.5ton AC & geysers(2) in each floor with lightings
2 4462There are 2 motors without name plate and terminal but one is DC motor and another is induction motor.How one can identify which one is DC and which one is AC motor?
6 12490How the flights will be fly be fly without ground connection under raining with thunder lighting?
1 3484how the transformer stables out zone faults? Because we use non directional O/C relays .Is there any special considerations are taking into account to overtake this?
1 3135The electrical energy required to raise the tempreture of a given amount water is 200 kwh. If the heat losses are 20%, the energy required is?
2074Why smallest capacity LV motor are star connected and medium & bigger size LV motors are delts connected
1 3068Post New Electrical Engineering Questions
is that any software calculator to calculate the size of cable
How can we increase fuel-power ratio of any DG set?
UG cable sizes were specified in sqmm. But practically its not coming to mesure. What's the reason for that? And how they specify the size of the cable?
What are the Return ( Monthly / quarterly/ Annual submitted to Electical Inspector for an establishment (Factory in Maharashtra-- Small scale category having seperate HT line of 22KV ) as per Maharashtra Electricity Act
plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?
can i use the six sigma method which is used in management area, in state estimation of power systems?
Why can't we take NO LOAD TRIAL of motors having V1 mounting??
what is the difference between interconnection and intraconnections in the circuit diagrams
What is method of calculating the fault current for a MDB, 50KW, 3PH, 415V, 50HZ?
In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?
How does a tertiary winding filter harmonic(espcially 3rd one) from entering into load system?
What is cathode ray oscilloscope (cro)?
PAC and simple Ac different
why do we put a transformer on soak before loading it
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<
