Differentiate between power relay and reverse power relay?

2 Answers   ABB, TVS,

---

Which colour of earthing wire

1 Answers   Aravali,

---

actually i can't understand what is 3dB ? and it's really not clear to me.please any one let it me be cleared.

0 Answers  

---

Why Capacitor & ignator used in MH lamp

2 Answers   Bell,

---

What will happen to transformer if we gave 5HZ input instead of 50/60Hz??? explain with reason

2 Answers  

---

when the PFR (POWER FACTOR REGULATOR)change a step to zero,one of the RCCB will triped off,is it the changing step of this PFR effect the RCCB?

2 Answers  

---

Give the expression for the frequency of oscillations in an op-amp sine wave oscillator?

0 Answers  

---

how many single tension hardware are required on a double circuit transmission tower?

0 Answers  

---

is there any current and voltage drop on liquid resistance starter water/soda tank ?

0 Answers  

---

what is acceptance test in electrical engineering.

0 Answers   ABB,

---

why nutral and earthing wire connect with each other in main panel board.?

2 Answers  

---

To prove the capacity of a 10MVA transforemr with 6.5% impedance by a short circuit test how much power is needed to inject an impedance voltage if we have to arrive for its rated current?

0 Answers  

---