Answer / salman ansari

When car is started it
requires high starting
torque. This
requirement can be
fulfilled by series motor
that is why we use
series motor

Answer / apoorv

series motor has high starting torque and as its terminal voltage increases , current also increases, so it is used.

Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 Answers  

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why transformer rating in kva

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0 Answers  

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what do you mean by earth fault in transformer?

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Explain in brief description about the operation of DG sets.

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i am trying to PSUs/govermeant jobs since last 2 years but still i m not success, plz help me.

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anyone knows service engineer in chennai for EDM SPARKING MACHINE.CHMER PULSE CD 60 M.pL GIVE ANY CONTACT NOS

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Input power is 380 - 450 V but with 45 - 55 Hz frequency - desired output is 415 V and 50hz with 1% variation permissible. CVT / Servo dont stabilize the Frequency - what is best solution??

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1ampear me kitna watts hota hai aur elcb ka pura naam kya hai

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