Important question

EE8002 Important Questions Design of Electrical Apparatus Regulation 2017 Anna University

EE8002 Important Questions Design of Electrical Apparatus

EE8002 Important Questions Design of Electrical Apparatus Regulation 2017 Anna University free download. Design of Electrical Apparatus Important Questions EE8002 pdf free download.

Sample EE8002 Important Questions Design of Electrical Apparatus

(i)Draw and explain the parts of an Electromagnetic rotating electrical machine. (ii) Discuss the limitations in the design of Electrical apparatus.
EE8002 Important Questions Design of Electrical Apparatus
(i) Sketch the magnetic circuits for different electrical machines by showing the flux path and also derive the mmf equation for series and parallel magnetic circuit. (ii) Compare on similarities and dissimilarities of an electric circuit and a magnetic circuit.
EE8002 Important Questions Design of Electrical Apparatus
Elucidate on different types of materials required for electrical apparatus.
EE8002 Important Questions Design of Electrical Apparatus
(i)A stator of machine has a smooth surface, but its rotor has open type of slots with slot width equal to tooth width=12mm. and the length of air gap=2mm. Find the effective length of airgap, if its Carter‟s coefficient=1/(1+5(lg/Ws)). There are no radial ducts. (ii) Calculate the mmf required for the airgap of a machine having core length 0.32m including 4 ducts of 10mm each. Pole arc=0.19m, slot pitch=65.4mm, slot opening=5 mm, airgap length=5mm, flux per pole=52mwb. Given carter‟s coefficient is 0.18 for opening/gap=1 and is 0.28 opening per gap=2.
CO 1
(7) (6)
EE8002 IQ Design of Electrical Apparatus
Estimate the effective gap area per pole of a 10 pole, slip ring induction motor with following data: Stator bore = 0.65m, core length = 0.25m, No. Of stator slots=90, stator slot opening = 3mm, rotor slots =120, rotor slot opening = 3mm, air gap length =0.95mm, Carter‟s co-efficient for ducts= 0.68, Carter‟s co-efficient for slots = 0.46, number of ventilating ducts=3 each on rotor and stator, width of each ventilating duct=10mm.

Subject name Design of Electrical Apparatus
Short Name DEA
Semester 6
Subject Code EE8002
Regulation 2017 regulation

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