Answer / munish

if dc applied as I/P. Then nothing o/p.
because T/F is a static which step up down the voltage
without changing the frequency.and it work on
electomagnetic induction ( mutual induction ).so mutual
induction is not possible in dc.

DC voltage has no frequency

Answer / eee

the windings are like inductor, so when dc applied.... the
input rises slowly corresponding to the time constant, during
this period output in secondary corrosponding to the turns
ratio can be observed. once its constant, no change in i/p,
else if current is high magnetic saturation of core occurs....
any no output after the specified time....

Importance of fault current in power transformers and how to monitor the same? How is it different from winding temperature?

0 Answers   Impulse,

---

Name two types of electrical analogous for mechanical system.

0 Answers  

---

IF I USED VVVF DRIVE IN FAN APPLICATION MOTOR IN 6.6 KV ( 700 KW) MOTOR & DURING NORMAL RUN OPERATION TIME IF RPM SUDDENLY REDUCE IN MOTOR BY DRIVE(E. MOTOR RPM REDUCE SUDENLY 687 TO 550 RPM) WAHT WILL BE HAPPEND IN DRIVE

1 Answers  

---

How to test lightning Arrester?

0 Answers  

---

freuency meter

1 Answers  

---

How we select the vector group of 3phase power transformer?

0 Answers   wbsedcl,

---

In motors how many types of cooling systems were used?

0 Answers   NTPC,

---

EXPLAIN WHAT BTU STANDS FOR(AIRCONS)

2 Answers  

---

How the Oil Surge Relay works? How it protect the OLTC?

3 Answers   JSL,

---

Why the design of electromechanical energy conversion machines is based on the medium of conversion as megnetic field not as electric field?

2 Answers  

---

WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?

0 Answers   L&T,

---

Why earthing is required, and what effect in earthing result is more than 5 ohm and less than 5 or equal to 0 ohm

2 Answers  

---