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 Categories >> Engineering >> Electrical Engineering
 
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Question Asked @ Answers Views     Select
help me with the question that might be ask on the interview for technical position eskom   0  517
Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???    0  360
we done magnetic balance test for 33KV /440V transformer in our company , but the ratio out is confusing us Voltage applied in RY = 440 , at RB = 320 and YB = 60 RY 440 = ( RB + YB ) 380 only Please let me know what type of problem is it.    2  1650
if we going for high voltage usages what are the considering factors, why those factors are effected.... please give me an answer related motor factors like wnidnig, frame, temp etc abb   0  261
How many capacitors using in LT panel as per Govt rules?    0  270
What is the work of ACCP in LT panel? juniper-networks   5  6894
whose the first invented AC voltage or DCvoltage    4  1537
what are the losses of capacitor??    1  1070
why power factor laggs and leads in case of inductance and capacitance??    1  1121
The initial current is very large at the time of starting for almost all DC motors. SO WE USE STARTER FOR A SAFE STARTING but at our homes we don’t see any starters in our coolers, motors.WHY DON’T WE NEED STARTERS FOR THESE APPLIANCES?    1  962
what is fault level of power system ?    2  2037
If i have 200 test cases and we have to execute but we don't have time to execute all testcases.within 1 hour we have to execute that testcases and prepare the test report.so how i have to resolve this problem? is there is any technique in the testing. stag-computers   3  1318
how to select size of hardware for linking aluminium busbar is it depend on area of busbar or current flowing through bus bar    0  406
Why corona takes place?    4  1764
In Plug used in house,Why Earth of the plug more thicker & deeper? l&t   8  3007
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Un-Answered Questions
 
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what happens to the supply voltage if there is any change in frequency? 2895
what is sevice settings for mccb?How can be it setted? 338
Direction of flow of active power and reactive power with logic? 158
what is the function of impulse relay 507
what is zinc diffusion? 254
I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum? 453
How can we design a HVAC Plant room which includes AHU,FCU,Chillers,Cooling towers, Pumps etc & how will they work? any Drawing if possible? 531
diff b/w elcb and rccb 279
what is the principle of operation of synchronous motor and generator? explain in detail. 1892
what is the difference between torque induced and torque load?compare them with respect to dc motor? 241
Pls Breifly explain about UPS (Inverter,Reserve,Rectifier,Float voltage,Boost voltage). 1004
how many load we can take for lighting 437
WHaT IS THE CONCEPT OF INDUCTION LAMPS IN MODERN LIGHTINGS, and HOW IT WORKS TO EMIT LIGHT ( AS NO ELECTRODES ARE PRESENT ) ?" COULD INDUCTION LAMPS CAUSE INTERFERENCE WITH COMUNICATIONS INTO A STORE USING INDUCTION LIGHTING ? WHAT IS THE BENEFIT OF USING THE LOW FREQENCY INDUCTION LAMP , VERSUS LED , AND VERSUS FLUORESCENT, AND VERSUS ANOTHER KIND OF LIGHTING . THANK yOU MOISES GUINDI 349
Please sent me some previous year question papers of BSNL-JTO telecom and RRB in ELectrical Engineering to varshashahi@yahoo.com 404
Difference between low impedance and high impedance Restricted Earth Fault 962
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