Answer Posted / sheikh
A heavy motor connected on heavy load can not be started
directly in delta because in delta connection starting
current may exceed on alarming level and motor may going
to burnt out. so minimize the level of starting current such
motor should be started in star thereafter delta in smooth
speed.
| Is This Answer Correct ? | 9 Yes | 0 No |
Post New Answer View All Answers
what is the mechanism of operation of brushless dc motor why is it more wexpensive then ordinary permanent magnet motors
What is measurement?
hi I have done 3 yrs diploma in electrical engg after 10+2. I have 16 years of work experience into design proposals sales and engg application development in LV/MV swithcgear and sub station automation field. I want to apply for immigration to new zealand but I am not sure whether I qualify or not since I dont have a degree. Can anyone advice? Thanks Riz
When and where resistance earthing is used ? How to calculate the time constant for earth fault
why the difference arise between HT reading & LT reading (submeters fixed in complexes, apartments etc)if the power factos exceed from 0.9 to 1 can the ht meter reads fast?
what is the chemical name and formula of refrigarent R-134a.
Vibromotor 252MV 1/4HP2P..what is mean by 252MV?
A 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
is that a problem if i connect a single phase load to a secondry delta connected transformer but i get a neutral from other transformer i the system?
what will be the min and max voltage flow from neutral to earth?
stand by earth fault protection (51G) for transformer rating 2000 kVA,Dyn11,33/0.400 V. LV NCT ratio and necessary resistor and metrosil values how to calculate
Draw torque - speed curve and load curve of induction motor? mark operating point ?
what is load despatching
What is the ratio of true power to apparent power in an ac circuit?
how to remover corona effect and hysteresis losses from contactor