2 ENGINEERING TECHNOLOGY PAPER 1 MARKING SCHEME QUESTION NUMBER 1
DESCRIPTIONS
MARKS
A D B E C
1 1 1 1 1 5 2
10
2
10 2 3
(i) (ii) (iii) (iv)
For finishing work For general work/ quick filing For filing soft metals For quick filing of soft workpiece
1 1 1 1 4
2 1 3
4
1 1 1 3
5
A B C
1 1 1 2
6
Boring Taper turning Straight turning Facing
1 1 1 1
4 (accept if step 3) 2 3 (accept if step 4) 5
1 1 1 1
4 7
4 8
Between human and machine Between machines Between machine and human
1 1 1 3
9
D C B
1 1 1 3
3 10
A
1 1 1 1
B C 4 11
Z X Y
1 1 1
1 4 3 2
1 1 1 1
3 12
4 13
√
√ √ a) b) c) d)
14
1 1 1 1
√
4
Direct current generator A) magnetic field B) armature C) commutator
1 1 1 1 4
a) power stroke and exhaust stroke b) ii) gas combust and expand iii) propulsion power is produced
15
1 1 1 3
16
P S R T
1 1 1 1 4
17
P1=P2 F1/A1=F2/A2 20
1
F2 2
D = 4D π 2 2
2
π
F2=
80 2 2 × 4πD πD
=320 N
1 1 1 4
4 i) ii) iii)
18
TRIAK DIODE SCR
1 1 1 3
19
a) direct line starting circuit b) i) start press button ii) contactor c) becomes electromagnetic to pull the iron core and lever is called holding circuit
1 1 1 1 4 1
20 1 1 3 21
i) ii) iii)
get anod katod
1 1 1 3
1.545 m
1
23
√ √ X
1 1 1
24
limited tender pre-qualified tender open tender
1 1 1
25
P = HEAD PLATE Q = STUDS R = NOGGING
1 1 1
X √ √
1 1 1
A B C
1 1 1
22
1
3
3
3 26
3 27
3 28
X: compressive load Y: tensile load
1 1 2
29
X √ √ X Printed media:
1 1 1 1 4 Either two
30
5 Books, magazines, journals, articles, proceedings
2X1 2X1
Electronic media: Internet, film, diskettes, CD-ROMs, Video, Ebooks, E-learning
4