Answer / kaami

advantages of DC generating station

1)since, V=IZ where Z=IR+reactance. As, f=0,
so Z=IR.
2)No skin effect in DC
3)natural capacitance in overhead transmission in AC cause the charging current to flow in overhead line thus causing the loss in transmission line. since in dc, charging current is absent so no natural capacitance.

advantages of AC generating station

1)output voltage due to DC machine are limited mainly due to restriction on rotor and carbon brushes. Output voltage from ac machines can be achieved very high upto 33kv because power is taken from the stationary part.
2)main advantage is stepping up or stepping down voltage to transmit to large distances.

What is order of the system?

0 Answers  

---

What does the a,b,c of 95a,95b,95c relays denotes?

0 Answers   KSEB,

---

what is meant by loss of field in a DC motor? how a universal motor works?

0 Answers  

---

1.what to do if ferquency of any power system continue to decrease ?

5 Answers   NTPC,

---

In vapour absorption refrigeration machine fluids used are

0 Answers   Caterpillar,

---

---

what is the difference between surge protection capacitor and surge arrestor

0 Answers   NCS, NCS Sugars,

---

Explain the working principle of Synchronous Generator and Assynchronous generator?

0 Answers  

---

WHAT IS THE SETTING OF OVERLOAD RELAY AND UNDER VOLTAGE RELAY IN PERCENTAGE?

2 Answers  

---

Why does inductive loads consume KVARs?

0 Answers  

---

Does the electricity supply authority send its customers power (kW) or voltape (V)? Asked by Ivan Muliro

2 Answers  

---

what is the meaning of insulation level?

2 Answers  

---

why transformer neutrol is grounding

6 Answers  

---