Answer / srujan

In generators and transformers the maximum possible load is
decided by temperature rise of the machine.

And all of us know the temperature rise is directly
prepotional to Current in machine and which is prepotional
to KVA.


But in the case of motor the possible maximum loading is
depends on the output torque.So its ratyeing is always in
KW.

Answer / sundar

generator is produced in current but supply the current from
motor is running in this differance between kva & kw

HT motors are generally connected in star, what will be the effect if we connect HT motor in Delta?

6 Answers   Equate, Ion Exchange,

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when it is possible kvrah lead & fundamental kwh be equal in electonic trivector meters (3 ph)

0 Answers  

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What is fault clearing time for Current Limiting Moulded Case Circuit Breaker?.

0 Answers   DAE, Hindalco,

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1 unit or 1 kwh means how much kva

7 Answers   TATA,

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If the capacity of water Tank is 50000 Liters situated at 20 meters height from ground level,What would be the size of pipe and how much USGPH water will be supplied and what will be the motor or pump rating used for this work?Illustrate by showing formula?

1 Answers  

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defination of a.c filter

0 Answers  

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why transformer measures in kva

4 Answers  

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Tell the details of the precommissioning tests that are performed on distribution transformer, power cable and switchgear (11kv).

1 Answers   Reliance,

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I find that underground strip-armoiured,4core,LT PVC cables in an earthed power distribution sytem are occasionly found in charred condition-with no trace of it except ash. Is this because of no proper earth connection/continuity (giving rising to high armour resistance)in the joint enroute or because of insufficient capability (again due to high armour resistance)of cable-armour to carry fault current or due to neglected /unprotected overloading of the cable or due to high armour currents caused by power thefts where only phase(s) are unauthorisely tapped & at the point of poer consumption earth terminal is established by burring underground a not so good earthing rod (or using an underground water pipe for the purpose)

1 Answers  

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tell 2 reasons for why only copper is used in domestic wires& only alluminium in transmission lines ?

10 Answers   ABB,

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why D.C excitation is given to sunchronous motor?

6 Answers  

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if neutral earthing is weak of a system then how can we improve it ? Technically explanation ??

1 Answers   CS, L&T,

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