explain why the armature voltage changes when the field rheostat is varied in self excited DC generator

2 Answers  

---

What are dcs and plc?

0 Answers  

---

Dear all i want to know FEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me shibin_75@yahoo.com

1 Answers   FEWA,

---

How many 2 ton window A/c can runs on a 125 KVA generator?

3 Answers  

---

If 100 KAV USP dedicated earth got disconnect / Cut. What will happen at load.

0 Answers  

---

What are options used for earthing the switchgear.

0 Answers   KSEB, L&T, Siemens,

---

i have a Connected Load of 280KW and Maximum Demand of 224KW to one of SMDB under design with me. which criteria should i consider to design panel and main cables connected Load or Maximum Demand 1)Breaker rating 2)Panel Busbar rating 2)Incommer cable sizing (ignore Voltage drop)

1 Answers  

---

As Electricity Generates in MW I w'd like to know What are the factors we have to consider regarding the transmission of electricity from generation station to Public uses(230 V)

1 Answers  

---

why capacitor rating measure in KVAR. ?

2 Answers  

---

if dc motor can operate by ac supply ? if its possible means how ?

2 Answers  

---

What is the function of wave trap in an electrical substation?

2 Answers  

---

why the neutral of power transformer is always earthed?

1 Answers  

---