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.

Why generally the Rating of Transformers are in additions of 11 i.e. 11 kVA, 22 kVa, 33 kVA, etc........

8 Answers  

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corona happens more in summer or winter?

3 Answers   MAHINDRA,

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WHY DOES NEUTRAL DO NOT CARRY EVEN THOUGH IT CARRIES RETURN CURRENT?

3 Answers  

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TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.

0 Answers   Bhel, NTPC,

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What is the function of lead sheath?

2 Answers  

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why compound generator is used in generating station?

2 Answers  

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why is the core of the underground cable is spiral in shape instead of straight?

8 Answers   Mecon,

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how an electron flow in a wire. can it flow like a car running on the road?

2 Answers  

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Where servomechanism is used?

0 Answers  

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WHATS THE DIFFERENCE IN USING THE 125% AND THE 250% FACTOR OF SAFETY IN CALCULATING CIRCUIT BREAKERS CAPACITY IN MOTOR APPLICATION??

0 Answers  

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why transmission line 11Kv OR 33KV,66Kv not in 10kv 20kv?

43 Answers   A2Z Group, Baiji Power Plant Gas, Electrical, HCL, Kirloskar, Mepco, NEPC, OAMC, UNI, University of Lahore,

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What is icu and ics in Acb and how many time icu or ics passes from breaker?

0 Answers   Engineering Vision,

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