What will happen if DC supply is given on the primary of a
transformer?
Answer Posted / sunil
mathematical reason is that net impeadance of a system is
formed of
Z = sq.rt(X.sq + R.sq)
here X = 2*pi*f*l since
f = 0 in DC,
X also becomes 0.
hence Z also =R
which is very small in this case. When volatge applied will
be like short circuit hence the winding will burn.
Is This Answer Correct ? | 7 Yes | 0 No |
Post New Answer View All Answers
What are the different circuits in thermal power plant?
1)what is the function of a frequency inverter? 2)If a few frequency inverter are connected onto a device network,what are the two setting that will ensure the frequency inverter work properly on the network. 3)whats is the name of the input sensor for weigher? 4)How to confirm that the load cellis faulty? 5)Describe briefly the steps to validate that the weigher is working properly? 6)Describe the procedure to validate the flowmeter accuracy? 7)Describe briefly the steps to validate that the tempreture sensor/transformer is working properly. 8)what is the adjustment that need to be done when you are calibrating the temperature transmitter ? 9)what are the safety measures to be taken before disconnecting motor for rewinding. 10)whats is the synchronous speed in rpm of typical 4pole 50hz motor? 11)whats is the formula for kw, ohm's law 12)if a 3phase motor is rated 3kw,415vac,what is it's rated ampere?
During FEED, you will have all the information with regards to cable. How will you calculate the MTO for MV and LV Cables? what are your considerations?
Load break swicth maintenance procedure.
Why is water motor not taking the pressure? what is the problem?
what do u understand about FACTS? how they are useful?
why i can not use thimble on capacitor duty contactor
how to select correct size of power cable for inverter duty motor
Define transfer function?
sir plz send some previous year questions of jspl.
Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards
How to calculate the Harmonics losses in terms of cost/unit.
DG SET BLOCK DIGRAM
Why is the air gap between the pole pieces and the armature kept very small?
Batteries used for electrical energy storage are a. Laclanche cells b. Edison cells c. Lead acid cells d.any of the above