Skema 3764 K1 Trial 2007 - ii contactor c becomes...

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ENGINEERING TECHNOLOGY PAPER 1 MARKING SCHEME QUESTION NUMBER DESCRIPTIONS MARKS 1 A D B E C 1 1 1 1 1 5 2 2 2 3 (i) For finishing work (ii) For general work/ quick filing (iii) For filing soft metals (iv) For quick filing of soft workpiece 1 1 1 1 4 4 2 1 3 1 1 1 3 5 A B C 1 1 1 2 6 Boring Taper turning Straight turning Facing 1 1 1 1 4 7 4 (accept if step 3) 2 3 (accept if step 4) 5 1 1 1 1 4 8 Between human and machine Between machines Between machine and human 1 1 1 3 9 D C B 1 1 1 3 2 10 10
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10 1 1 1 1 4 11 Z X Y 1 1 1 3 12 1 4 3 2 1 1 1 1 4 13 1 1 1 1 4 14 a) Direct current generator b) A) magnetic field c) B) armature d) C) commutator 1 1 1 1 4 15 a) power stroke and exhaust stroke b) ii) gas combust and expand iii) propulsion power is produced 1 1 1 3 16 P S R T 1 1 1 1 4 17 P1=P2 F1/A1=F2/A2 2 2 20 D π = 2 2 4 2 D F π F2= 2 80 D π × 2 4 D π 1 1 1 1 4 3 A B C
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=320 N 18 i) TRIAK ii) DIODE iii) SCR 1 1 1 3 19 a) direct line starting circuit b) i) start press button
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Unformatted text preview: ii) contactor c) becomes electromagnetic to pull the iron core and lever is called holding circuit 1 1 1 1 4 20 1 1 1 3 21 i) get ii) anod iii) katod 1 1 1 3 22 1.545 m 1 1 23 √ √ X 1 1 1 3 24 limited tender pre-qualified tender open tender 1 1 1 3 25 P = HEAD PLATE Q = STUDS R = NOGGING 1 1 1 3 26 X √ √ 1 1 1 3 27 A B C 1 1 1 3 28 X: compressive load Y: tensile load 1 1 2 29 X √ √ X 1 1 1 1 4 4 30 Printed media: Books, magazines, journals, articles, proceedings Electronic media: Internet, film, diskettes, CD-ROMs, Video, E-books, E-learning Either two 2 X 1 2 X 1 4 5...
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