Answer / nithi

* synchronous generator generates the power only at
synchronous speed whereas induction generator generates the
power only at ASYNCHRONOUS SPEED.

* induction generator needs AC supply for it's
excitation,but synchronous generator requires DC supply for
excitation purpose.

Answer / s c budhiraja

Syncronous generator runs at syncronous speed of the
system, where as induction generator runs at a speed which
is different from syncronous speed.

As an example if we remome DC excitation from a syncronous
generator and the generator remains connected to the system
AC voltage& the prime mover(turbine etc)Continues running,
the rotor will get excitation induced from the generator
Stator and the generator will continue running as induction
genrator.

Answer / rakesh

an induction generator is one which needs a continuous
supply from the mains , that is it is not self starting it
needs to be first started as an induction motor and then
the primemover torque be applied in opposite to the
electromagnetic toreque so that the rotor startss moving at
a sped greater than the synchronous speed , while a
synchronous generatore is self starting and requires only
prime mover torque which rotates it in the direction
opposite to electromagneticc torque and it rotates with the
synchronous speed

in a refinery one motor is suddenly stoped. what will do how can i findout the problem explain step by step

2 Answers  

---

Dear Sir, we met a disaster with our 62.5 kva genset, after rewinding we informed by our contract engg that due to return current coming in neutral & impropper earthing this happend. But after all set up & load balance we checked & found again we have about 20 to 32 amp return current on neutral. we have 12 airconditioner + 12 mini fridge on single phase line. Pl suggest any idea to solved this problem

3 Answers  

---

if i have one capacitor=80 micro farad which correct the unity power factor,but i want to make capacitor bank who correct the power factor.so,how to split this capacitance value?

2 Answers  

---

What is delta stare switch?

1 Answers   Samsung,

---

what is the function of DC panel in substation?

4 Answers  

---

---

why do we have 230v a.c. as general voltage for domestic supply rather than others?

2 Answers  

---

What is kvar?

0 Answers  

---

TELL ME WHAT IS INDUCTOR AND CAPACITOR WHAT IS IT BASIC OPERATION ANDFUNCTION?

0 Answers   ABC,

---

what is difference between neutral and ground wire?

2 Answers   TCS,

---

what is the purpose of checking IR and Megger values in motor windings?

5 Answers  

---

what is mean by tan-delta tap in the potential transformer??

2 Answers  

---

Any website for objective type questions of electrical engineering ?

4 Answers  

---