CDACC ICT Technician Level 5 : Apply Basic Electronics past paper July 2023 Answers

Answers for ICT Technician Level 5 : Apply Basic Electronics past paper July 2023

Course Name:  ICT Technician
Also Done By:
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Course Level:  Certificate
Sub Level:       Level 5
Course Unit:   Apply Basic Electronics
Exam body:    CDACC
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1. The deviation of resistance of a resistor is known as A. Inductance B. Resistivity C. Tolerance D. Ohms ()
2. An electrical component used to store electrical charge is E. Charger F. Adaptor G. Capacitor H. Logic gate ()
3. Copper and aluminum are examples of A. Conductors B. Insulators C. Semi-conductors D. Electricity ()
4. When a Semi-Conductor material is heated, its resistance ______ A. Decreases B. Increases C. Does not change D. Increases then Decreases ()
5. In which form does an inductor store energy A. Electric B. Electro-magnetic C. Magnetic D. Permittivity ()
6. The rate of change of energy is measured in A. Joules B. Henry C. Voltage D. Wattage ()
7. An electrical instrument used to measure the amount of current in an electrical circuit is called A. Amperes B. Potential difference C. Ammeter D. Coulombs ()
8. Which of the following is not a property of a wave A. Power B. Period C. Frequency D. Amplitude ()
9. The dielectric material used in a capacitor increases its ______ A. Permittivity B. Capacitance C. Farad D. Permeability ()
10. Which of the following types of memory is used for cache memory A. SDRAM B. DRAM C. SRAM D. CRAM ()
11. During a basic electronics practical class, a trainee was handed the component shown below. Identify the component. A. Fixed Resistor B. Fixed Inductor C. Variable Resistor D. Fixed Inductor ()
12. Which of the following statements correctly describes the characteristic of a valence electron A. They are highly mobile electrons B. They do not take part in bonding C. They exist in any electron shell in an atom D. They determine the physical characteristics of an atom ()
13. In modern computing, a packed BCD is preferred over unpacked BCD. What is the main reason for this preference A. Packed BCD is memory efficient B. Packed BCD is easily understood by the computer C. Unpacked BCD is outdated D. Unpacked BCD is ambiguous ()
14. A single transistor is used to implement _______ gate. A. NAND B. OR C. NOR D. NOT ()
15. Electrical quantities whose value varies in a non-continuous manner are referred to as A. Analogous B. Encapsulation C. Digital D. Frequencies ()
16. A capacitor is constructed using how many plates A. 1 B. 2 C. 3 D. 4 ()
17. Name the instrument shown below: A. Ohmmeter B. Potentiometer C. Digital meter D. Voltmeter ()
18. Which of the following is the odd one out A. RAM B. ROM C. Cache D. Flash disk ()
19. The total number of electrons in an atom is known as A. Atomic radius B. Atomic number C. Atomic size D. Atomic weight ()
20. Which of the following is an active electrical component A. Transistor B. Capacitor C. Inductor D. Resistor ()
21. The measure of how difficult it is for current to pass through a material is known as resistance and it’s affected by many factors. List FOUR such factors. ()
22. RAM and ROM are primary memories of a computer. Outline FOUR differences between the two ()
23. Describe TWO types of biasing techniques used in a p-n junction ()
24. Draw a truth table of a NAND gate with two input variables ()
25. In number presentation, hexadecimal numbers are not preferably used. List THREE disadvantages of the hexadecimal numbers ()
26. The figure below shows a closed circuit of three inductors L1, L2 and L3 of 0.5H, 1H and 2H respectively Use it to answer the questions below a) Determine the equivalent inductance in the circuit b) Describe the flow of current in L1 and L3 ()
27. Evaluate the following arithmetic giving your answer in binary: #152_8# -# 67_8 # ()
28. Determine current in a closed circuit having two resistors connected in series of values 10Ω and 15Ω respectively with an EMF of 4.5V ()
29. DVDs are gaining popularity more than CD-ROM’s. List FOUR advantages of a DVD over CD-ROM ()
30. State Ohm’s Law ()
31. List THREE factors that could necessitate the use of inductors in a circuit ()
32. Differentiate between power and energy as used in electronics ()
33. Determine the decimal equivalent of each of the following number systems. i.# FC7_16# ii. #1010 1101_2# ()
34. Determine resistance of a resistor having color code given below i. Green, violet, white, and gold ii. Yellow, violet, and silver ()
35. Explain THREE circumstances under which 2’s complement is used in a computer ()
36. Integrated Circuits are used commonly when developing electronic circuits. Explain THREE benefits of Integrated Circuits ()
37. With the aid of a diagram, describe the computer memory hierarchy ()
38. During a basic electronics lesson, the students were required to construct a simple electronic circuit. Describe the FOUR components they will use ()
39. Differentiate between doped semiconductors and un-doped semiconductors ()
40. Discuss any SIX challenges of emerging trends in electronic manufacturing ()
41. Silicon is mostly preferred over germanium in fabricating semiconductor electronic devices. Explain TWO main benefits of silicon over germanium ()
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