Question { 17892 }

can we step up dc power using transformer?

Answer

NO,We can not step up DC power using transformer.
DC having both potantial (ie.+ve &-ve )and when it is
connected to primary wdg. of transformer ,primary get short
ckt.& burned (Heat wiil produced).
BUT THERE IS ANOTHER WAY -
* First convert DC power into AC power by using inverters &
after then that AC power can convert into DC power by
rectifire at suitable range as you required.

Question { ABB, 11599 }

hw to find transformer is in normal position? whether its
in charged condition or not? except humming sound?

Answer

1)by sensetion (vibration ) of transformer .
2)by sensing the temperature of transformer.

Question { REL, 18221 }

In winter we seem lightly an electric shock when we touch
to doors(sometime)

Answer

BEACAUSE OF -
1) IMPROPER GROUNDING/EARTHING
2) DUE TO MOIST IN WINTER,THE AIR GET CONDUCTED AND
BEACAUSE THAT ALSO ELECTRIC SHOCK TAKES PLACE.(THE ELECTRIC
PATH COMPLETING =CONDUCTORE-WALL-DOOR-BODY-EARTH )