ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

0 Answers  

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what shoud be strength and weakness to impress interviewer????????

0 Answers  

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how to decide choke rating for drive?

0 Answers   Reliance,

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WHICH TYPE OF TRANSFORMER IS USED IN POWER TRANSMISSION BASED ON TRANSFORMER CONNECTION ON PRIMARY AND SECONDARY SIDE

3 Answers  

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In a poly phase circuit if clamp on meter shows same load on three phases and their sum on neutral then why we use three and a half core cable or maximum the same size of core as that of phase?

1 Answers  

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what are corona losses

3 Answers   Siemens,

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What is the 415V AC Soft starter? Explain with an example?

1 Answers   TCS,

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why ferranti efect occurs on no load only?

3 Answers  

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What Should be the rating of transformer used in 33KV substation?

3 Answers  

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in transformers for ex. 100mva and 400kv the secondary current is about 420 amps but for selection of bushing the capacity of selected bushing is 2000A why there is such big difference ?

2 Answers   ABB,

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Is only insulation the difference between High voltage and Medium voltage cable?

1 Answers  

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What is the maximum load of 240mmsequre single core cable can carry?

1 Answers  

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