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.

if 2500 KVA TRANSFORMER CAPACITY.33KV INCOMING HOW ARE AMPEAR PRIMERY SAID

3 Answers   Cipla,

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what is XF 200/240 V AC for Drawout Breaker.

1 Answers  

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why two contacts(in series) are using in closing circuit

3 Answers  

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how much capacity(rating) of generator required to operate a load of 100kv.

6 Answers   DSC,

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why induction motors are rated at 0.8 power factor.

0 Answers   Bhel, TN,

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The Source internal resitanse Rs , When equal to Load resistance RL, the maximum transfered is of _____ % of input power?

2 Answers  

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What is the Levels of High Voltage, Medium Voltage & Low Voltage?

1 Answers  

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why do the alternator doesnt have open circuited windings in armature???

1 Answers  

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A system having the charactristic eqation (s+1)(s+2)(s-3)=0 is (a)stable (b)unstable (c)marginally stable (d)critically stale

1 Answers  

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What is the frequency of dc current????

4 Answers   SCS,

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if a 3 point starter is not available, how can a dc motor be started?

3 Answers   Accenture, BIT, Techno Solutions,

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what is a core company? why should we join a core company?

1 Answers  

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