Electrical machines IIT madras

Can I watch the video of NPTEL Electrical Engineering - Electrical Machines –I of Indian Institute of Technology Madras as I am preparing for the exam? Also give me the name of the Coordinator of Department of Electrical Engineering , IIT Madras?

I want the Assignment of Electrical Machines –I of B.Tech Electrical Engineering of Indian Institute of Technology IIT Madras so can you provide me?

[pooja]

I am providing you the Assignment of Electrical Machines I of B.Tech Electrical Engineering of Indian Institute of Technology IIT Madras

IIT Madras B.Tech Electrical Engineering Electrical Machines I Assignment

A 440/220V transformer rated 100kV A is reconnected as an auto-transformer with voltage
ratio of 660/220V . What will be the power rating of the reconnected transformer?
100kV A
150kV A
66.67kV A
33.33kV A

Accepted Answers:
150kVA

A 110/440V transformer is reconnected as an auto-transformer having voltage ratio
110/550V and loaded with 500kW at unity power factor on the secondary side. What are the line
currents?
Primary Line current = 4545.45A, Secondary Line current = 1136.36A
Primary Line current = 4545.45A, Secondary Line current = 3636.36A
Primary Line current = 4545.45A, Secondary Line current = 909.09A
Primary Line current = 3636.36A, Secondary Line current = 4545.45A

Accepted Answers:
Primary Line current = 4545.45A, Secondary Line current = 909.09A

A 15kV A, 400V/200 V , 50 Hz single phase ideal two winding transformer is
used to step up a voltage of 400V to 600V by connecting it like an auto transformer .
Calculate the maximum kV A that can be handled by the autotransformer without over
loading any of the HV and L V coil?
30kV A
45kV A
15kV A
30kV A

Accepted Answers:
45kVA

For more details here is the attachment

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