Answer / satish mankar

if,x'mer works in d.c supply,then flux is constant,no e.m.f
is produced,if back e.m.f does not produced the ckt will
draw a more current and causes heating of the winding and
x;mer will damage

Answer / aman jangra

transformer not working in d.c because the muatual induction
zero due to no frequency present in d.c as compare to ac
voltage.and no induction in primary winding ...and then
transformer not working.

Answer / masna awan

because d.c has zero frequency. so no flux produce in
primary coil and low resistance pass high current and
primary coil will burn.

Answer / bhavsar.malay

because of this two reasons..
1)transformer works on principle of electromagnetic
induction...
hense,there is no change in the voltage source with respect
to time so, there won't be induced of emf in either of the
coil...
and so there won't any output appearing on the secondary..
EFFICIENCY=0
2)if the DC suppluy is given the there may be POSSIBILITY
OF THE SATURATION OF CORE MATERIAL WHICH MAY CAUSE DAMAGE
TO TRANSFORMER...
hence for dc supply transformer can not work,
and for just testing purpose only dc supply is given up to
certain ranges..

Answer / cd

love the transformer no given the dc supplu

Answer / minal

Since dc has both potential(ie +ve & -ve)so if it passed
through primary of the transformer then its windings get
burned.That is why transformer doesnot work on dc.

What is the drawback of class b amplifier?

0 Answers  

What is real time power factor control panel(RTPFC)?

0 Answers  

what is diode? and what it is used for ?

3 Answers  

Why lightning arrester blast in rainy day?

1 Answers   Eco Cement, Mahaveer, MBDL,

How dc generators direction can be reversed ??

2 Answers   GPSC Gujarat Public Service Commission,

what happened when we supply a dc current in dc motor?? can it worked properly?

0 Answers  

function of apfc pannel

3 Answers  

HOW to speed control of induction mototr using scalar control

3 Answers  

who to select a swicth fuse unit......?

2 Answers  

derive DC RMS value for half wave rectifier?

0 Answers   BARC,

Why should we use jelly filled armoured cables in underground Communication system? What is the use of the Jelly? If we go for unarmoured, then what happens?

1 Answers   Prasad Group,

what is the difference between potential transformer and capacitive voltage transformer?

1 Answers