EE2251 Electrical Machines-I May June 2014 Question Paper

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Question Paper Code : 51435 

B.E/B.Tech. DEGREE EXAMINATION, MAY/JUNE 2014. 

Fourth Semester 

Electrical and Electronics Engineering 

EE 2251/EE 1251 A/ 080280003/EE 42/10133-EE 402 — ELECTRICAL 

MACHINES — 1 

(Regulation 2008/2010) 

(Common to PTEE 2251 —Electrical Machines — I for B.E. (Part-time) 

Third Semester — Electrical and Electronics Engineering — Regulation 2009) 

Time : Three hours 
Maximum : 100 marks 
Answer ALL questions. 
PART A — (10 x 2 20 marks) 
1.What are qu4si-static fields? 
2.Define magnetic reluctance. 
3.Differentiate between a core and shell type transformer. 
4.What is the basic purpose of tertiary winding? 
5.Define co-energy. 
6.What do all practical energy conversion devices make üse of the magnetic fields as a coupling medium rather than electric fields? 
7.What is the difference between lap winding and wave winding of a DC machine armature? 
8.Why synchronous machine does not produce torque at any other speed? 
9.List the factors involved in the voltage build up of a shunt generator. 
10.Why the external characteristics of a DC shunt generator is more drooping than that of a separately excited generator? 

Full Name :Arumugam.P
College Name :SNS College of Technology
Department :EEE
Semester :04
Subject Code :EE2251
Subject Name :Electrical Machines-I
Study Material Description :aaru edition 2014 QP

Attachment :

  EE2251 EM-I May June 2014 QP.pdf (Size: 1.08 MB / Downloads: 3,641)

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