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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 7926Resistance of low voltage side of transformer compared to high voltage side is A less B equal C more D depens on design
1 5691As load in a transformer increases, mutual flux linkage in core= A increases B decreases C not change D first increase then decrease
2 8368Are we do it in single transformer with dual primary as 11 KV and 33 KV and constant output as 415 Volts?.
1 3207In 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 471877 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 2762In 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
2054In 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
2244In 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 2772Stator 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
2185Stator 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 4571A 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
2020Post New Electrical Engineering Questions
why genarator genarating voltage 11 KV?
Keywords: Die, Card, Coin, B/N 2 To 12
what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?
What are the causes for the failures of sandwich type (Al) busducts?
What is a diode?
Can anybody please refer the best and simple book for about Protection relays and in detail of all its protection ?
If SFU is Switch Fuse Unit, What is the expansion for FSHF in Electrical Engineering?
How can we find out LT UG cable fault (size,from-4*25mm sqr to 4*300mm sqr)? How mani types UG cable faults?
What is difference between start imitation and start interlock for 3 phase motor protection ?
75 kw motor take 45 amp in no load delta in star 10 amp but in load it will take 160 amp but IR velue of winding above 500 at 1kw ph to earth and ph to ph. what problem it should be?
why the electrolyte level in lead acid battery is maintained 2.5 cms above electrodes?
We have 110Vac ,10A ac supply which is converted into 110VDC & How much DC current? which factor is reqired for dc current calulation?
what is motor capacity of 80TR chiller? and also say what is the formula related temperature, motor capacity, TR?
block diagram of 2 ups system connected in parallel mode?
what is mean by ideal infinite bus? why it is required to consider in fault short circuit calculations?
