STUPIDSID
1 (a)
Explain working of single phase transformer under no load condition with the help of vector diagram.
7 M
1 (b)
What is the constructional difference between core type and shell type transformer? What are the merits and demerits of each?
7 M
2 (a)
How can you perform open circuit test on transformer? Which parameter you can obtain from this test?
7 M
Answer any one question from Q2 (b) & Q2 (c)
2 (b)
Why are we connecting two transformers in parallel? What are the different conditions for parallel operation of transformer?
7 M
2 (c)
What is autotransformer? Derive its equation for saving in copper.
7 M
Answer any two question from Q3 (a), (b) & Q3 (c), (d)
3 (a)
Explain Sumpner's test performed on transformer.
7 M
3 (b)
How can we convert three phase to two phase in transformer?
7 M
3 (c)
Explain torque-slip curve of induction motor.
7 M
3 (d)
What is difference between squirrel cage and slip ring induction motor?
7 M
Answer any two question from Q4 (a), (b) & Q4 (c), (b)
4 (a)
What do you mean by distribution factor and pitch factor in synchronous machine?
7 M
4 (b)
Explain ZPF method to find out regulation of alternator.
7 M
4 (c)
What is the basic principle and construction of synchronous motor?
7 M
4 (d)
Derive the e.m.f equitation of D.C.Generator.
7 M
Answer any two question from Q5(a), (b) & Q5 (c), (d)
5 (a)
Explain different type of D.C.Generator with diagram.
7 M
5 (b)
Explain different method of speed control of D.C Motor.
7 M
5 (c)
What do you mean by power factor? How can we improve power factor?
7 M
5 (d)
What is Ferranti effect? How is it effect voltage of transmission line?
7 M
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