080280035 Electrical Machine Design Nov Dec 2013 Question Paper

1
Full Name :Arumugam.P
College Name :SNS College of Technology
Department :EEE
Semester :06
Subject Code :080280035
Subject Name :Electrical Machine Design
Study Material Description :QP

   
Question Paper Code : 41228 
BE./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2013. 
Sixth Semester 
Electrical and Electronics Engineering 
080280035 - ELECTRICAL MACHINE DESIGN 


Time : Three .hours 
(Regulation 2008) 
Maximum : 100 Marks
Answer ALL questions. 
PART A - (10 x 2 20 marks) 
1.What is real and apparent flux density? 
2.Define gap contraction factor for slots. 
3.What are the factors to be considered for the selection bf number of poles in a 
DC machine? 
4.Why equalizer connections. are necessary for the armature winding of a DC 
machine with lap winding? 
5.Why is the area of yoke of. a transformer usually kept 15-20% more than that 
of limb? 
6.Why stepped cores are generally used for transformer? 
7.List out the factors that determine the: choice of air gap length.of a 3-phase 
induction motor. 
8.What are the advantages .of cage induction motor over slip ring induction 
motor? 
9.What is the effect of SCR on synchronous machine performance? 
10.What are the types of poles -used for salient pole machines?

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    080280035 Electrical Machine Design Nov Dec 2013 Question Paper