why dc supply is given to the field of alternator9 12156
1.why is +1+1=+2 why cant it be +3 2.Why is +1*-1=-1 why cant it be something else 3.why are the hilly areas more cooler than the ordinary areas?5 3958
can we use 7volt DC BATTERY to run a 60watt motor by stepup? Give reason for your answer?5 3215
when will be the iocl interview results ifaced the interview on september 8 th
a 3 phase motor was running with delta connected, suddenly one phase winding got burnt off, what will be the effect ?8 10860
why 3 phase motors are preferable over single phase motors ?6 5454
how does it help for selection of a transformer.
for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance
although ckt breakers have taken the place of old fuse. But instead of it , these older ones are still used in the industries and homes ? why .... what are their advantages and disadvantages ? which one is leading and winning the race and competition ?
how to identify vector group of three phase transformer by voltage method?
what is Fault level? why it is calculated? how will u decide same for our plant?
What is the magnetic field (coil DC ) of Turbo Expander?
WHAT IS MEANT BY SHEATH VOLTAGE IN 132Kv cable?
How we can calculate the consumption in kwh of motor on basis of kw @100% load, @50% load & @ no load.
If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables
For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?
relation between power station capacity and voltage level?
What is the comparison between 30mA DP RCCB and 100mA DP RCCB and can replace it against 63A MCB
specific difference of ICT&Auto Transformer
what is the use of commutator in dc motor if we supply ac ? commutator is used to convert ac to dc.and it is used to arrange the flux in unidirectional in case of dc supply. if we give ac as supply to dc motor what is the use of commutator?
Size of the power cable like 1.5,2.5,4 sq.mm which area calculated from whick area or how specified the size?