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 Categories >> Engineering >> Electrical Engineering
 
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Question Asked @ Answers Views     Select
What are IR values and what it should be for coil and for insulator    0  7
What is meant by vector group    0  10
Do you know what is dry-out test in x'mer    0  9
What are the safety equipments you should use while you are in a hvac switch yard    0  8
How dc generators direction can be reversed ??    2  12
what will be the efficiency off x'mer during no load test and during short circuit test    1  11
What is the difference Marshaling box and RTCC (Relay tap changer circuit) Panel of transformer ?    1  12
Please tell me in DETAIL about the following 3 types of fuses or recommend me a good power system protection book or a website link ? 1.Dropout Fuse 2.Striker Fuse 3.Empulsive fuse (not sure if its impulsive or explosion fuse , sorry)    0  8
what is conductor constant of raccun conductor    0  7
How to apply 'c' license and also explain what is difference between 'c' and 'b'license.i am also working in one of the private company.i have finished my diploma in 2014 .i have already finished in ITI electrician course.....    0  8
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.    0  6
how to discharge 3 phase power factor correction capacitors    0  11
why steady state stability limit is greater than transient stability limit ? How it can be explained ?    0  8
Why scr and igbt used in  ups systeam ????    1  21
how to test the electrical panel.ht lt mcc pcc.    0  7
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Un-Answered Questions
 
 Question Views   Select
 
why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages? 253
detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron 803
Saving in copper achieved by converting a 2 winding transformer in to an auto transformer is determined by A voltage transformation ratio B load on secondary C quality of core material D size of transformer core 138
what is the ms flat constant for calculating earth mat design calculation? 69
can anyone show me how the 3 phase power is supplied to socket outlets? 156
how to calculate singlephase motor efficiency? 100
sail kaott diploma ece ke interviw me qus.kis parkar ke aate hai aur G.S me kya puchate hai kya sameedyaan me kis parkar ke qu.puchate hai 334
how to avoid Saturation in C.T? 139
WHAT ARE THE DISADTAGES OF SINGLE-WIRE-EARTH-RETURN SYSTEM USED FOR RURAL ELECTRIFICATION? 178
WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME 169
How many different speeds can be obtained in cascade control of two induction motors? 158
If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load? 165
why we are calculating the capacitance between phase(conductor line)and ground in transmission line?why cant we calculate capacitance between the phase and the nuetral line?if so what is procedure. 221
which one is more efficient, torq, power & ecnomy with the same frame size AC motor / DC motor? 161
please send me previose rrb junior engineer qustion papers 174
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