ELECTRICAL DEPARTMENT NOTICE BOARD

Laboratory Assignments

Semester : 7^TH Electrical

Subject: Design of AC Machines

Draw & write the following Assignments from the book “ELECTRICAL MACHINE DESIGN “ by   A. K. Sawhney

(1)Draw the following parts of three phase induction motor in SHEETS

10.2,3,4,8,9,10,12,14,15,16,17,18,27,29,36,41,43

(2)Draw the following parts of three phase synchronous machine in SHEETS

11.2,3,4,5,6,8,9,13,14,15,16,17,18,21,22,26,28,45

Write the following solved examples in file page with data sheet

(A)Design problem-1

Design a 2.2KW,400V,3-ɸ,50Hz,1500rpm squirrel cage induction motor. The machine is to be started with star-delta starter, the efficiency & power factor are 0.8 & 0.825 respectively. Assume cheap design.

(B)Design problem-1

Design a water wheel generator with the following specifications:

KVA=3000,  Phase=3,  Voltage=6600V,  Frequency=50Hz,  Connection=star,  RPM=187.5,  P.F.=0.8lag