why in dc generator field rheostate kept in maximum position?

1 Answers  

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DIFFERENC BETWEEN VOLTAGE AND CURRENT

1 Answers   Wipro,

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What will happen if the d.c. Shunt motor opened accidentally running on no-load has its shunt field winding?

0 Answers  

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What is BUCKBOOST TRANSFORMER and Operation of Buckboost transformer?

4 Answers   Voltamp,

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What type of motor is used inside computer CPU.

11 Answers   Bhel, TCS,

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what are symmetrical and non symmetrical components in electrical installation.

0 Answers  

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Resistance of low voltage side of transformer compared to high voltage side is A less B equal C more D depens on design

1 Answers  

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How to calculate CT ratio for 11KV 1500KVA Transformer 500KVA MD and 1400KVA connected load ? Note:- As per MSEB(Maharastra state electricity Board)

1 Answers  

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why Transformers power mentioned in KVA?. and why Generators and Motors power mentioned in KW?.

10 Answers  

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What is meant by TAN-DELTA test carried out in motors?

3 Answers  

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How to find Cable size? Caterpillar generator produce (Two generators) 127*2=254 amp at 11 kv . What would be the cable size (XLPE) to supply 256 amp at 11 kv? Air or surrounding Temperature is 32 degree C. Cable will go under ground at 2.5 feet depth. Group Rating Factors is 3 cables. Clearance between cables is 7 cm. Soil Temperature (Ambient) 28o C Soil Thermal Resistivity is 1.2 K.m/W I would like to use 3 separate single core instead of using 3 core cable. Some says I should use three separate single core 120RM cables. Some says 70RM .some says 95. I m totally confused. Is there ant specific rule to determine cable size? What would be the LT cable size to flow 500 Amp current? Ifte My e mail address is ifte13@yahoo.com Anyone please send me the answer to my e mail address, i will be very glad.

1 Answers  

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Since phi is the angular displacement between V & I, then why we use phi in power triangle ie. when showing active, reactive & apperent power in triangular manner & if it is ok then where is V & I in the triangle.

1 Answers  

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