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C 6131 Name .

Reg. No .

SIXTH SEMESTER B.TECH. (ENGINEERING) DEGREEEXAMINATION, JUNE 2010

EE 04 606-ELECTRICAL ENGINEERING DRAWING

(2004 admissions)

Time : Three Hours Maximum : 100 Marks

_.~ .~

1. (a) Draw the winding diagram in developed form for a single layer lap winding for 32 slot s and4 poles . Also draw the sequence diagram to show the position of the brushes.

-Or

(b) Draw a developed concentric winding diagram of an induction motor having 24 slots, for3 phase.4 poles operation.

(25 marks)

II. (a) Draw the sectional plan, Sectional elevation and sectional side elevation of a core of dia .22 ernhaving 3-step core construction, height of core = 48 em thickness of end plate 3 mID.

Or

(b) Draw the layout of a capacitance power substation.

(25 marks)

III. Draw to a suitable scale a heat and sectional view of the following as per main dimensions givenbelow in centimetre scale . Winding of the field and armature need not to be shown.

D.C. 6 pole. 150 H.P. motor.

Armature diameter = 55

Number of slots =61

Size of slot =1 x 4.5

Slot open type

Depth below slot =9

Commutator diameter = 42

No. of commutator bars = 244

Air gap length (radial) = 0.5 at main pole and 0.6 at interpole.

Main pole laminated. breadth 14, arc 20, height with shoe 21.

Inter pole breadth =4

Outside diameter of Yoke = 115

Shaft diameter at bearing = 10

The method of fixing the pole lamination and the pole to the yoke should be clearly shown.(50 marks)

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C 58374 Na me .

Reg. No .

SIXTH SEMESTER B.TECH. (ENGINEERING) DEGREEEXAMINATION, JUNE 2009

EE 04 606--ELECTRICAL ENGINEERING DRAWING

(2004 admissions)

Time : Three Hours Maximum: 100 Marks

(12 .5 marks)

(12.5 marks)

I . (a) Develop simple lap winding for DC machine having 36 armature conductors and 6 poles. Alsoshow connections to equilizer ring.

Or

(b) Develop three-phase spiral or concentric winding for an AC machine having 24 slots oneconductor per slot and 4 poles.

II. (a) (i) Draw the line diagram for the outdoor type distribution substation from double polestructure to L.T .

(ii) Draw the complete layout for 220 kV substation .

Or

(b) Draw the full sec ti ona l elevation, sectional plan, sectional side view elevation of a 3<j1transformer for the given below dimensions. Show clearly the method of fixin g the core a ndyoke :

Core 3 step construction :

Core dia. == 22 em.

Height of core == 48 em .

Height of yoke == 25 em.

Centre to centre distance between the cores == 35 em .

III . Draw the following views of the DC machine commutator assembly :

(i) The front elevation to be half in section.

(ii) The end elevation half in section for the given below dimensions.

Use any suitable scale :

Diameter of com mutator == 13 em.

Length of the commutator == 11.8 em .

Diameter of the shaft == 4 em.

Segment pitch with mica == 0.6 em .

Mica thickness == 0.1 em .

Clearly indica te the dimensions.

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