1. If we apply dc supply to the
primary winding
of transformer it will be burnt out.
similarly dc
supply is given to field winding of
syn. motor
and armature winding of dc motor,
they are
safe. (Remember both windings
inductive nature) what is the reason
behind that?
Answer Posted / r.durgaprasad
dc motor is protected by back emf
and syn.
motor is protected by self induced
emf. ( for
low voltage of dc supply transformer
is also safe
because there is also self induced
emf is
produced )
| Is This Answer Correct ? | 2 Yes | 5 No |
Post New Answer View All Answers
Assuming that a dedicated neutral earthing transformer is provided for each GT generator, when the two generators are running in parallel, has consideration been given that the earth fault current from one generator stator winding be split between the two neutral earthing transformers? If so, what adverse impact will this have on the operation of the 59N and 27TN devices?
What is cross over distortion? How it can be eliminated?
why different series of vfds (like allenbradley)are used in industry ?
What is a commutator?
What is kirchoff ’s current law (kcl)?
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
what is the significance of terminal voltage and phase sequence in the operation of paralleling of two generators?
Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.
my diploma certificate in my higher education college
in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply
5.WHICH TYPE WELDING PROCESSES USES NON CONSUMABLE ELECTRODE.........
What is lc oscillator?
The transmission does not have options: a)Partition noise b) Flicker noise c) resistance d) Short noise and reason
How we can defined theecopper cable size if we know the aluminium cable size?
I have a reading off 1.5ohms at my mem my main c/b is rated at 40/6 amps in a domestic house and i was told to change it to a b curve c/b is this ok