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 Categories >> Engineering >> Electrical Engineering
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Question Asked @ Answers Views     Select
wath is this mining of bts nokia   0  135
wath is this mining of dg nokia   2  239
wath is this mining of bts nokia   2  481
the 230 value of voltage which is use in our home . is that value is rms, aerage or peack value of voltage? l&t   5  1660
which relay is used for both detection & correction?(there is only one relay)    2  503
the single phase voltage is 230 volts and threee phase is 430 v.why three phase is not 660 v?    2  939
how dc generator produce voltage initially? bisleri   1  477
In a overhead system why the voltage between line &ground is taken for basic comparison ?and in case of underground cables the comparison take only by the voltage between cables? l&t   1  927
why to use 50hz only in tansmisson and as well as in distribution why not60hz?    2  580
what is the reason for connecting hvdc monopolar line with negative conductors    0  126
Transformer rating=> 15/20 MVA.Why there are two raings? What should be the rating of the fuse at the secondary if the voltage level is 13.8KV/4.16KV?    1  1007
Why is it that bus reactors are not accompanied by a neutral grounding reactor whereas a line shunt reactor is? PGCIL does so.    2  1076
what is the difference between rccb and elcb?    1  575
for preparation of design note of 11 / 220 kV , 3 phase, 63 MVA transformer how can calculate or consider the iron losses and copper losses    1  516
what is power factor    3  560
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Un-Answered Questions
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what is the difference between STAR and DELTA connection and application wise how it can be utilizedd 313
For a three phase induction motor, what will be the effect on motor if the neutral of the system is shifted to say 20 deg.? 173
Difference between induction motor and synchronous motor? i Think Synchronous motors operate at synchronous speed (RPM=120f/p) while induction motors operate at less than synchronous speed (RPM=120f/p – slip). Slip is nearly zero at zero load torque and increases as load torque increases am a right pls guide & send Other Comments 836
A simple Question from all.... If Voltage drops then its rated value what will be effect on a Residential load? similarly if voltage rises from its rated value then what will be effects on a load? i know if voltage drops the equipment or device draws more current then its rated what are other reasons ? thanks in advance for ur time....... 107
I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done? 686
What is EHT tariff or Power factor Tariff ???? 415
How to calculate per unit impedance of transformer? 215
what is the principle of the single phase energy meter? and,what is the advantages and disadvantages of single phase energy meter? 1153
For the requirement of a furnace of temperature range up to 1200 oC using silicon carbide rods, What is the required rate of transformer needed (please do it with all details)? 137
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)? 139
what can be the causes of capacitor start motor having a higher current that its actual 122
dear sir/madam i want to get some knowledge about RRB EXAMINATION(section engineer) 1- what is minimum cut off 2- wht portion is major portion . 3- can any body provide Sample paper. thanks & regards ashish 219
how to calculate vfd o/p voltage by frequency 204
how to calculate the earth fault current 114
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