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 Categories >> Engineering >> Electrical Engineering
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Question Asked @ Answers Views     Select
if i have one capacitor=80 micro farad which correct the unity power factor,but i want to make capacitor bank who correct the power,how to split this capacitance value?    2  1143
what is the relationship between current and frequency in AC circuit?    3  14949
I have two power supply.a)govt. power b)Captive power.3 phase load connected inside factory.when source change govt. source to captive some motor rotate reverse. Is phase sequence changes when if off & on?If I off generator & on it again is it possible to get changed phase sequence?? abb   4  2301
Can you explain the phase displacement between primary and secondary of power transformer of any vector group(for ex)?    1  880
The formular of how to calculate a cross sectional cable to feed an electric motor. Examle: 15KW, 26.1A, 415V. Calculate the cable size in mm2    3  3826
Which type of Oil is used in transformers, & what is its strength?    1  2134
Which type of moter is used in trains, what is the ratting of supply used explain Working principal?    2  3336
What is the Levels of High Voltage, Medium Voltage & Low Voltage?    1  830
What is working principal of V.C.B., O.C.B., A.C.B & Over load relay? unitech   3  11636
Why we use a H.T. Fuse from a thick wire, on other side we use high rating of cables? & Why we use less Sq. mm Cable on H.T. side , on other side we use Large Sq. mm cable?    1  3365
what is servo motor and how to work it.    0  301
what is the basic need of domestic loads 1- voltage 2- current    0  320
how to define that what is resister ,capacitor& inductor.    1  1841
Why Diffrential and Ref relays are used together although Diffrential relay can protect Pri and Sec of Transformer qatar-gas   1  1356
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Un-Answered Questions
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how you will decide the distance between the power transformer and its fencing 260
in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using? 443
Transformer diagram mention each parts ? 427
Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir 112
how to calculate energy of 3-phase motor? 344
I have done my in electrical engg discipline. Can any one please suggest me how should I prepare for getting into phd in iit or nit.How should I prepare for getting into lecturership 73
why the power factor of the induction motor is low? 214
what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system? 333
Can any body tell gulf interview question for experienced electrical engineer ? 323
how to design the heater in temperature control unit to heat 50KL of water? 357
how to control dc motor? 362
1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ? 714
What will happend if given Vfd out put to step up transformer 142
I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this? 418
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