Answer / rishin

answer is 120....bcoz the answer is direct from the phasor
diagram which is same as that of the transformer phasor
diagram...

Answer / guest

the pf angle is nothing but angle between voltage and
current and here in induction motor the emf and current are
displaced by 30 and the stator and rotor are displaced by
delta

why you don not show protection and type of isolation in key single line diagram?

1 Answers  

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there is a line fault some where on the ove head distribution line. how will i locate the fault for clearing it? ofcourse i have to megger the line but what information makes me clear that the fault is in that section of the line?

2 Answers  

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the inertia constants of two machines are respectively 30and 42 MJ per MVA.when the change in frequency due to change in load in first machine is 12 Hz,the change in second machine frequency will be?

1 Answers  

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why current flows from +ve to -ve terminal

7 Answers  

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hi pal, i am vengatesh from tamilnadu(chidambaram),i have called for the written test for the post of jr executive(ELECTRICAL) of AAI ,I dont know about the question paper pattern,so any kindly help me to face the examination,post me the model question papers and some tips to write my examination to (vengi.annadurai@gmail.com)

1 Answers  

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How to calculate per unit impedance of transformer?

1 Answers  

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how to calculate the power loss of cable?

1 Answers  

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What is the difference between Encoder and Resolver?

1 Answers   DCCE,

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can we use generator(a.c) as a motor.if so how if not why.

2 Answers  

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What can be a rating of a transformer(KVA) if the load is about 1000KW?illustrate by showing formula?

2 Answers  

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Which loss in DC machine is maximum?

1 Answers   IFFCO,

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how we calculate fault current& load factor or fault level&also the leakage current

1 Answers  

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