Answer Posted / maddoxx

in control and protection ckt very small current is require in relays ,cb etc .The panel is placed far from the work place.so if we use small ac current there may be chance of interference by communiation frquency and signaling it also produces noise which can too interfere in other sognalling freq. so dc current there is no frequency and we can increase the accuracy and sustain the strenth of signal coming to controlling panel.

Operation carried out in thermal power stations?

1061

---

What is the function of Governor in Hydro Power Station? What is the Function of Lightning Arrestor Voltage Transformer (LAVT)?

2767

---

i want to learn control schedule for 11kv panel? can any one send the detailed control schedule?

2370

---

how to find out cable size if load is 2800 watts, 230 volts AC supply and load distance is 1800 meters

1559

---

why can the rotor of 3 phase slip ring induction motor not be a 2 phase rotor?

2002

---

what is Anti-pumping?

1887

---

CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??

5562

---

If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?

2030

---

Draw the single line diagram of the power station?

1022

---

Draw a block diagramof Three UPS systems connected in Parallel mode?

2091

---

I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1811

---

how to calculate single phase motor efficiency ?

2093

---

how to calculate cooling requirement of datacentre from electrical load?

2328

---

what is mean by dry frequency

2403

---

How to Calculate The sag of OPGW in Transmission Line???

3068

---