why there is a phase shift lies between primary and
secondary voltages of a transformer?
Answer Posted / asmi
When suppply is given to primary side(Let it be V)
flux is generated ,this flux generates vtg in primary
winding(E)(like back emf in motor).As per Lenz's law these
vtges are opposite to each other (180 degrees phase shifted)
hence,there is a phase shift in Iry n IIry vtges of T/F
| Is This Answer Correct ? | 21 Yes | 13 No |
Post New Answer View All Answers
how will we calculate the copper wire load..
Why control of DC motor is simpler?
To prove the capacity of a 10MVA transforemr with 6.5% impedance by a short circuit test how much power is needed to inject an impedance voltage if we have to arrive for its rated current?
DERIVE AN EXPREION FOR MAXIMUM POER TRANSMISSION, WHAT ARE ITS APPLICATIONS.
define the active power?
could an induction motor be used for regenerative braking in electric-train control? in this type of application would some scheme have to be devised to obtain low synchronous speeds while braking? would induction-motor drive, therefore, be suitable for passenger service?
Why it is possible to use PWM with a STATCOM and not with a conventional TCR based SVC
How many points does a Circuit can have?
WITCH CARDS IN USE IN FIRE CONTROL PANEL.
What is the Diff. btw Manule Pull Station & Manule Abort Station Switches used in FM200 System??
what is difference between isolation and ultra isolation transformer?, what is the method of testing ?
how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test. why transformer rating in always in KVA ? what ispositive, negative, zero sequence impedence? How ElCB tripping if Neutral touch with ground Why AC & DC capacitor are use in UPS ? why motor rating in KW? how to syncronize two dg sets
what is the synchronous timer ? and it applications.
is it possible to test of bus bar in high rise building without completed full floor ?
what are the pecularity of shaver sockets ?