Answer / ravendran

capacitor banks to use improve the power factor.in motor
side to reduce the temperature and losses

Answer / oarhe ize

We test the capacitor bank by connecting the testing lead
to the positive and negative end of terminals.

Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

3 Answers  

---

what will happen at secondary side of transformer if i increase voltage at primary side?while V1*I1=V2*I2 will secondary voltage or current increase?

2 Answers  

---

why the excitation is necessary to produce the reactive power

2 Answers  

---

what is a lightning arrester???

12 Answers   ABB, NTPC,

---

what is the difference between ac and dc hipo test of cable?

2 Answers  

---

how to fit 3 HP crompton gear motor with conveyor with the use of staring delta starter or ordinary starter?

0 Answers  

---

How to Preparation of online test

0 Answers  

---

what is the control circuit for operating the clean room air shower

0 Answers   L&T,

---

Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.

0 Answers  

---

If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

0 Answers  

---

A double circuit with dog conductor 66KV Transmission line from wind farm evacuation to feeding substation having capacity of 25MW for transmission. Can same transmission network be considered for further expansion of Power & how much in MW. If we need to expand next 10-15 MW more will there any augmentation is required in transmission network? Kindly reply asap.

0 Answers  

---

When the power Factor (p.f)is lead then how the Voltage can rises?

1 Answers  

---