EngineeringTechnologySECUnit2SynopticSept2022.pdf

Index Number:____________ SEC37/s2.22s



MATRICULATION AND SECONDARY EDUCATION CERTIFICATE
EXAMINATIONS BOARD

SECONDARY EDUCATION CERTIFICATE LEVEL
2022 SUPPLEMENTARY SESSION

SUBJECT: Engineering Technology
PAPER NUMBER: Synoptic – Unit 2
DATE: 1st November 2022
TIME: 11:30 a.m. to 1:35 p.m.




THIS PAPER SHOULD BE RETURNED TO THE INVIGILATOR
AFTER THE EXAMINATION.




For examiners’ use only:

Question 1 2 3 4 5 6 7 8 Total


Score


Maximum 6 12 8 8 8 8 12 8 70




© The MATSEC Examinations Board reserves all rights on the examination questions in all examination papers set by the said Board.

,SEC37/s2.22s
DO NOT WRITE ABOVE THIS LINE



Answer ALL questions in the space provided. The use of non-programmable electronic calculators
is allowed.

Scenario

• An engineering company issued a call for applications for electronic technicians.
• The applicants were given the following test to assess their knowledge in electronic circuit
design.

Question 1 K-1 (6 marks)

a. Categorise the following materials as insulators or conductors by filling in Table 1 below.

Copper Rubber Wood Bronze
Porcelain Oil Silver Steel

Table 1: Conductors or Insulators.

Conductors Insulators




(2)

b. Define the term semi-conductor.

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c. One of the technicians measured the resistance of two wires made up of the same material. He noted
that the resistance is different in each case. State the TWO parameters affecting the resistance of
the wires.

Parameter 1:

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Parameter 2:

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Question 2 C-1 (12 marks)

a. Describe the relationship between resistance, voltage and current. Write down the equation
and the SI unit for each parameter.

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_______________________________________________________________________ (4)


b. Figure 1 shows the measurements of current and voltage across a resistor. Determine the
resistance from the given VI graph. Show all your workings.


VI graph
1.2


1


0.8
Voltage (V)




0.6


0.4


0.2


0
0 0.5 1 1.5 2 2.5
Current (mA)

Figure 1: VI graph of an ohmic component



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