Answer / solanki

EXCITATION VOLTAGE-
IT CAN BE EXPLAIN AS THE VOLTAGE REQUIRE TO EXCITE THE FIELD
WINDING OF A DC MACHINE NORMALLY ITS VALUE LIES BETWEEN 125
TO 250 V DC.
EXCITATION CURRENT-
THIS IS THE CURRENT WHICH REQUIRE TO EXCITE THE DC MACHINE
FOR PRODUCING MAGNETIC FIELD....

Answer / engineering.force

Excitation voltage is the voltage across the field terminals
of the dc machine, i.e. to energise the field winding of the
alternator or dc machine. Its value is generally 125-250 V
and it is supplied by a dc generator (in case of alternator)

Excitation current is the magnitude of the current that is
required to produce the required magnetic flux in the
airgap. i.e. the value of the field winding current at a
particular load (or may be rated load) is known as
excitation current.

Excitation voltage is required to supply for the reactive
power demand of the system.

what is suroounding current of dg set?

1 Answers   Airtel, Sukarma,

---

how to calculate a cable size while load is given in amp or kw and length is also define.?

1 Answers  

---

I have 1500KVA transformer ,How much Maximum KW Load is allowed?

15 Answers   GKC Projects Limited GKCPL,

---

what is effect of leading power facter on the system and billing

0 Answers   TATA,

---

What are the advantages of stationary armature and rotating field system?

0 Answers  

---

How much depth we will take in 33kv sub station and why.

0 Answers  

---

Why CT's shall not be kept open?

5 Answers   ABC, Qatar Gas, TIPL,

---

how to calculate the earth mat design in 132 kv substation yard ????

0 Answers   Divis Laboratories, KSEB, SWPL,

---

How much difference can there be between HT & LT KWH unit consumption at the same load?

1 Answers   DLF,

---

what is difference between short ckt and overload?

6 Answers   Siemens,

---

Initially motor starts with star connection ,after few timing changes to delta connection, why the motor should run continously in star connection,it gives high torque & low current?

3 Answers  

---

what happens to the supply voltage if there is any change in frequency?

1 Answers   Gridco,

---