Why the size of transformer decreases if we increases the
frequency?
Answer Posted / chandan kumar
E=4.44bafn V
so if we increase the supply frequency the induced emf
increases
and the active power of transformer is given by P=VI,
SO POWER DEVELOPED IS INCREASES of the same t/f
if we increase the frequency
therefor the size is decreases
| Is This Answer Correct ? | 3 Yes | 6 No |
Post New Answer View All Answers
boiler is running in rankine cycle and deisel generator is....?
difference between the applicability of nortons and thevenin theorem
when will be the iocl interview results ifaced the interview on september 8 th
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
what is the difference between Power and Distribution transformers ?
What is the best thing to protect the motor from running over full current. CT or O/L or pressure transducer at the given pressure rating
xfhnchncv?
what is the question paper model for section engineer in RRB
what is the requirement regarding earthing of Single conductor with AWA
SUTIABLE FOR ohm's law super conductor
i want some interview related questions with their answers which can help for attend the interviews...
What are reasond for high wattage in single phase induction motors
Which type of air compressor is used now a days in the market. Keeping in mind of energy efficiency and maintenance points. Relevant documents may also be sent on mentioned email ids.
what is the purpose that we use PLC system in power system
What is the pro & con of having 11kv & 33kv incoming, and what is the adv & disadv. of converting from 11kv to 33kv.