Answer / srinu.pavan

For any generator, we get to control the Reactive power
generated only when the generator is running in
synchronised mode with another generator or grid.

Increase in excitation voltage increases the amount of
reactive power generated.

while the genertor is running in island mode the change in
excitation voltage controls the terminal voltage.

Answer / kj

Strictly speaking answer 1 is correct.

It is the excitation current that produces the magnet
field. In most generators the voltage across the field is
controlled by the AVR which then increases or decreases the
current flowing through the field.

There are generators which have a shunt regulator. In this
a variable resistance is placed in parallel with the field.
The shunt will take more or less of the fixed current
flowing through the parallel circuit. This controls the
current flowing through the field.

What is high frequency grounding????Applications........

1 Answers   Emerson,

---

I have a shop heater with a 1/3 hp capacitor start, induction motor driving the fan. Intermittently, the fan motor speeds up significantly for several seconds (15-60 sec) then slows to normal operating speed. The manufacturer suggested changing the capacitor which made no sense, but I did it to no avail. Could this possibly be caused by the centrifugal switch intermittently reconnecting the start winding?

1 Answers  

---

IN A HT CABLES i.e. 1.9/3/3 kv, what is the meaning of 1.9 and 3.3.

1 Answers  

---

what is the disadvantages of star connected alternator?

4 Answers  

---

Why is the earth pin in a 3-pin plug the longest and the thickest?

10 Answers   IBM,

---

what is deffrent alternatid and gernater

2 Answers  

---

Explain about c.t?

0 Answers  

---

what is different between buchhoz relay and pressure relife devices in transformer

2 Answers   Spanco,

---

can a synchronous motor be made to rotate in a clockwise direction ?

1 Answers  

---

Stepwise process of Northern grid failure in 2012!? (dont copy paste from wikipedia)

1 Answers   Rashtriya Ispat Nigam Limited RINL,

---

IT IS SAID THAT THE OLTC OPERATION SHOULD NOT BE PERFORMED WHEN THE TRANSFORMER IS GENERATION TRANSFOREMR/STEP UP MODE. WHY IS IT SO?

1 Answers   MSETCL Maharashtra State Electricity Transmission Co Ltd,

---

wat will be the pressure maintained inside the transformer?

2 Answers  

---