Answer / sanjeet

no

Answer / sarthak sahani

no a dc cannot be used with the transformers as because dc has zero frequency due to which ther is no change in magnetic flux linked with the secondary coil .......as a result of which there is no induced emf in the secondary coil hence no output.

moreover a dc can't be used as it has zero frequency it offers very less resistance due to which current flow increases resulting harm to the primary coil.........

Answer / kiran

Yes we can go through this link:

http://electronic-
components.globalspec.com/learnmore/electrical_electronic_components/transf
ormers/switch_mode_transformers


I went to this link to find the answer of same question

Answer / g.ravikanth

It will be a dead short circuit when we connected DC supply
the Primary of a transformer,because there will be no self
inductance property for a conductor in DC .But there is a
alternative to step up the DC power using transformer ie
using converters or by amplifiers.

Answer / shanmu

We cannot step up power without any external source.But we
can step up votage only.

why co incidence factor considered in transformer sizing?

0 Answers  

---

Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............

0 Answers  

---

i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400

0 Answers  

---

why we are used D.c. voltage in L.T.side or controling side.we can use UPS also ,in place d.c. voltage

5 Answers   ABB,

---

why secondary terminal of current transformer should not be open circuited?

4 Answers   ABB,

---

---

At what distance power transformer can be placed from generating ?

6 Answers   NTPC,

---

Sir 33kva 2 transformer load 900 amp calc 1800 amp mana jayega

0 Answers   Classic Infotech,

---

Will any motor burn if voltage provided is lesser than the rated voltage???? If yes, then how is speed control possible with voltage control

0 Answers  

---

what are factors to be consider in electrical installation like load factor,diversity factor .....

0 Answers  

---

what is the current density of copper & alluminium.

0 Answers  

---

How Arc Extinguish in Minimum oil circuit breaker and What is the function of Radial and axial vents of turbulator in Minimum oil circuit Breaker Where these vents are exists.

1 Answers  

---

There are different classes of protections in power plants.class a,b,c are clear..is there any class d and e r there..and elaborate class b protection.

0 Answers   GMR,

---