Answer / manoj kumar sahoo

A ballast & ignitor is required in MH & other lighting
fixture because its takes high voltage in starting and
normal voltage in running periods.

Answer / k.prakashchandra

They create high voltage initially to strike the arc, then
the ballast limits the current as the resistance of the bulb
becomes zero due to ionization.

what s d difference between inverter an ups

1 Answers   Jindal,

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what's the reson that,Load is not same on VFD I/P and O/P Side.whenever DOL condition load is same I/P and O/P side.

1 Answers  

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How much earthing require for h.t.22 k.v. cable in coming side & out going & 22 lighting arrest or,22 k.v.D.o. & A.B. switch.

1 Answers  

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i need to give section engineer (electrical engineer) for RRB. Please suggest some book

0 Answers  

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why farmers are use earthing instead of neutral for their light conec. at field.is it safe

2 Answers   Honeywell,

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What is Harmonic affects in power system. what is unit of harmonics and how to measure it. how much value should be in power system.

1 Answers  

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Can we use 11kv Trivector Metre or Energy metre instead 33kv Metre at 33kv Over Head Line metering purpose?

5 Answers   Bhel,

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calotropis is an example of the following phyllotaxy

1 Answers   APGenco,

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why 3 phase motors are preferable over single phase motors ?

6 Answers  

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what is difference between megger & Contact resistance meter & its Application?

2 Answers  

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How do you reverse the direction of rotation of a FAN?

13 Answers   CPCL, IOCL,

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How to setting the volume of RTCC panel AVR (11kv) controller

0 Answers   CNF Automotive India,

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