Answer / shobana

Yes. But not directly. First DC has to be converted to AC
by using inverters. Then It can be stepped up using the
transformer

Answer / mihir sarkar

Transformer is a static device which only step-up and step-
down the AC voltage keeping power constant.An amplifier can
step-up DC power.

Answer / a.ramesh

A TRANSFORMER IS A DEVICE WHICH STEP UP AND STEP DOWN AC
VOLTAGES,BUT NOT FOR DC

Answer / shekhar

it requires ac input to change the direction of magnetic
flux then only we get ac output.
if dc is used it will be over heated and saturation problem
arises

Answer / chitta ranjan panda

no, because in dc change in flux is zero.so we can n't appy
dc directly.

Answer / vikrant gokul labhane

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.

Answer / md mohsin ali

primary will burnt out due to the fact that there is no
electromagnetic induction in secondary there was no current

Answer / ganesan

i=v/(r+jx);x=2*3.14*f*L;

In case of ac it has 50hz frequency .so both the reactance
x and r resistance is available.In case of Dc it does not
have frequency .so reactance is zero and resistance in the
circuit is very small.

i=v/(r+0);so DC power taking more initial current .it may
burnt out the transformer windings.

Answer / mohsin

no, because there will be no magnetic induction and the
transformer will burn out.

Answer / sailesh ranjan patel

no, in transformer dc is not given directly because dc has
both positive & negative potential& when dc is connected
with primary of transformer primary is s.c & burn.

the fuse is use for protection against overcurrent but at normal condition it carry the rated current then how single thin wire carry this current without melting

1 Answers  

why do we have spikes enough to burn electronic boards, when generators are not grounded

0 Answers  

In control room of our one plant there is a continuously the incoming power goes to PC is vary,means in stabilizer it continuously indicate from high input to low and low input to high. what is the reason and its solution.

0 Answers  

A 7 storey building has a floor area of 35,000sq.ft on each storey. On the ground floor 11KV electrical sub-station is to be erected. A load of 3kw for every 400sq.ft (p.f is 0.8) is proposed for each floor. fire pump 7.5hp, water pump 5hp, lift 2 nos, each 10hp and 20shop load of each shop is 5kw. calculate a. load each floor b. total load of building c. L.T feeders for aech floor and from transformer to main. d. distribution diagram e. capacity of sub-station/capacitor bank f. line diagram

0 Answers  

capacitor applied voltage is 1100VDC & capacitance value is 82uF how to calculate current of capacitor.

2 Answers  

What are PLC leader logic program method

0 Answers   AIS,

why an ideal voltage source has low internal resistance????

1 Answers  

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2 Answers  

Why hydropower is called renewable source of energy?

0 Answers  

use of automatic voltage regulator & input voltage of it?

1 Answers  

1. what is exciting winding, rotor winding, startor winding. and how it works? in ac generator

3 Answers  

why use generator Earthing/Graunding.

4 Answers