Answer / jvino03

Initially Tube light need more voltage during starting time
to get ionization of electrons. So the purpose of Stater is
to flicker or excite the tube light with high voltage,

Stater is nothing but a 2 metals which is in contact during
starting purpose only... After it comes out from the
circuit....

Answer / biswa

More clarification needed. the choke coil(iron core
inductor) gives rise to the high voltage e=L.(di/dt) where L
is the inductance of the coil. the voltage induced is in the
range of 800-100 volts a.c. this voltage ionizes the gas and
the tube glows

Answer / biswa

in my previous answer the voltage is 800-1100 a.c

why ELCB can't work if N input of ELCB do not connect to ground?

5 Answers  

---

can we ran equipment up to 10kw between phase to grounding/ earthing. beside above can we use grounding instead of neutral. .

1 Answers   TNEB Tamil Nadu Electricity Board,

---

how to check regenerative load in drived motor

0 Answers   Hindustan Unilever Limited, NHPC,

---

working principal of online ups

0 Answers   Delta Power Systems,

---

what is load despatching

0 Answers   NTPC,

---

Best way to measure the Soil resistance of rocky soil, three probe method and four probe method

0 Answers  

---

1.After synchronising the alternator to the grid,how we r delivering power to the grid?if the i/p increases does the speed hence frequency increases? 2.y the power factor is changing when exitation changes?what is the relation with p.f and flux?

4 Answers   BSNL,

---

why do motors burn out? I understand why adding parallel loads to a power source means more current moves through the circuit, and can destroy circuit elements by overheating. What about when you have a vaccuum cleaner intake flush against a floor, a room fan sitting directly against a wall, or a power drill trying to drill through something too hard?

0 Answers  

---

what is KSR type transmission tower? What is LSR type transmission tower?

0 Answers   Ford,

---

why we are not giving the zone 1 trip command to the master trip relay

0 Answers  

---

A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.

0 Answers  

---

how to calculate busbar capacity for 1000Kva transformer having22/.433V

2 Answers   Electrical Tech, L&T,

---