Answer / abhi

i think the arc quenching in sf6 is better than vacuum. so for 33kv vacuum is usedc whereas for 132kv sf6 is used...

Answer / sathyamoorthy r

my idea 132kv vacum circuit breaker ,vacum create is most costly & difficult compare sf6 so usely sf6 and low kv use vacum . another difficult arc quencing medium is high for sf6

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  

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WHat is the requirement of installing FAST ACTING EARTH SWITCH in GIS and how is that integrated with protection system. How and when does it operate?

0 Answers  

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what is the difference between VARIAC,AUTO TRANSFORMER,DIMMERSTAT.

10 Answers  

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If OLTC is in manual position there is chance to variation of voltage(Low or High)?

1 Answers   Juniper Networks,

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what is mean impedance?

7 Answers   ONGC, Wipro,

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What is the difference between electrical earthing and electrical grounding?

0 Answers  

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which safety we have to take when we go for work?

2 Answers  

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what iz second and fifth hormonics please explain

1 Answers   Satia,

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if you short the any 2phase(R,Y,B),why fuse get blown?

5 Answers   Steel Plant,

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if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.

0 Answers  

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respected sir, sir recentely i have applied for chennai and tiruvananthapur section enggineer and juniour engg in electrical dept. but still i donot get how i have to syart my preparation and also t the same time i donot know exactly what they r going to give in the examinations i mean which sections they r going to give i donot know exactly, can u prefer whichh books i have to follow and model papers or both boards

1 Answers  

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In liquid rotor starter how PH valve should be maintained.

1 Answers  

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