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Transfer of electric power from primary to secondary in a transformer takes place A electrically B magnetically C electro-magnetically D conductively
2 8067Resistance of low voltage side of transformer compared to high voltage side is A less B equal C more D depens on design
1 5791As load in a transformer increases, mutual flux linkage in core= A increases B decreases C not change D first increase then decrease
2 8469Are we do it in single transformer with dual primary as 11 KV and 33 KV and constant output as 415 Volts?.
1 3292In 3 phase induction motor even with low Voltage it reaches nearly it's rated speed why? (for example instead of 400V it reaches with 250V)
2 482577 In constant power region of 3-phase IM torque-speed characteristics, the torque is proportional to A speed B slip C 1/speed D 1/slip
1 2843In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above
2115In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above
2301In constant power region of 3-phase IM torque-speed characteristics, if frequency increases voltage A does not alter B decreases C increases D none of above
1 2871Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm
2239Stator of 3-phase IM has 3 slots per pole per phase, calculate number of stator pole pairs. A 1 B 6 C 2 D 3
2 4672A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate number of pole pairs. A 1 B 6 C 2 D 3
2067Post New Electrical Engineering Questions
when ID fan will immediately stop through VFD what exactly cause and problem the ID fan
why is a power transformer used only occasionally?it is used to step up at generating stations?and that needs to be done all day long !!!!!!!
I have done my m.tech 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
How to maintain ac plant?
What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?
WHAT IS THE FUNCTION OF SHORT CIRCUIT MAINTENANCE CT
HOW WE CAN REDUCE THE CIRCUIT COMPLEX OF STAR-DELTA STARTER .BECAUSE NOW WE USING ONE TIMER RELAY & THREE CONTACTOR FOR MAIN,STAR & DELTA ?IF ANY IDEAS PLZ POST.THANK U
what is die electric strnth of transformer ?
what is th basic difference between a d latch time line and a d flip flop time line???
How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend
how to determine ct ratio in ht vcb?
What should be the length of transmission line so that we can see/obtain the full sine wave of voltage??
give me a clear defination of inductance,and how can u calculate inductance of a motor
what is ramping rate of generator
exolain the star delta connection
