Answer / kj

An AVR (automatic voltage regulator) works by supplying a
variable voltage to the field of an alternator to control
the output voltage.
The AVR senses the output voltage and compares it to a
setpoint which is usually set by a pot on the board.
It uses either the output voltage from the alterantor or
another source (e.g. PMG permenant magnet generator) to
supply the voltage to the field. The voltage to the field
is DC so the supply to the AVR is rectified before it is
used for the filed.

Why IGBT is very popular nowadays?

3 Answers   TVS,

---

ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

0 Answers  

---

what will be the effect of leading power factor on turbogenerator (and system) that is running parallel with other TG.

1 Answers  

---

7. Hrc fuse provides best protection against.......

5 Answers   SSC, UGVCL Uttar Gujarat Vij Company Ltd,

---

What is the type of earth fault protection used in battery? explain.

0 Answers   PSEB,

---

why the capacity of power plant is given in MW though the generators are rated in MVA?

3 Answers   TATA,

---

what is unit of inductance

12 Answers   Bhel, Bosch, OSML, Vijai Electricals, Voltage,

---

WHAT TYPE OF DC MOTOR IS USING FOR ELECTRIC TRAIN ?HOW ITS FUNCTIONING ?

2 Answers  

---

In Generator How suction compression power and exhaust works ?

0 Answers   Sify,

---

1 Kva = How many KW

3 Answers   Reliance,

---

high voltage transformer input voltage,current and amps rating..distributed transformer input voltage,current and amps rating...

0 Answers  

---

what is PWM in IGBT and how it works for drive.?

0 Answers   BRG,

---