Answer Posted / saeid

The answer is because these alternators are synchronuse
generators. The philosophy of electrical synchronuse
generators is based on DC excitation in the rotor and
synchronuse vontages in stator.

However,there are some application for induction generators
such as wind generators that have AC excitation like other
induction motors.

As a reslut, if alternator is synchronuse generator it has
to have DC excitation and if alternator is induction
generator it has to have AV excitation.

If VFD is On but no starting commond on it. so how many outpout voltages of VFD

1102

---

What kind of socket shall be provided for window type air conditioner with cooling capacity upto 18000 BTU/hr

1020

---

What are reasond for high wattage in single phase induction motors

1826

---

what purose of the double circuit transmission line phase of the line phase changed for circuit-1 for Circuit-2 R-Y-B B-Y-R

2219

---

Metal covered multiconductor cables shall employ a marker tape located within the cable running for its complete length in lieu of cable surface marking. Is it true or false?

2200

---

one electromagnet is called

1861

---

What is the need of generator relay panel

2022

---

how will calculate the safe starting current of 3-phase squirrel cage induction motor?

1863

---

hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.

2909

---

what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?

2288

---

The height to which the liquid in a tank to be maintained for a certain constant velocity?

1937

---

What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?

2485

---

how are reversing the direction of dc motor

1591

---

What is the maximum operating temperature for a thermoplastic insulated cable?

1074

---

how can we make cable shedule for controll wiring ? which details must be required for it.?

2081

---