Electrical Technology Grade 12 Term 1 March Past Papers and Memos

1. Q1 Occupational Health and Safety1.1 State TWO unsafe acts that may lead to an acciden. t (2) 10 marks
2. Q2 Three-Phase Ac Generation2.1 Define the following terms: 20 marks
3. Q3 Three-Phase Transformers3.1 State the purpose of a transformer. (1) 20 marks
4. Q4 Three-Phase Motors and Starters4.1 State ONE advantage of a three-phase induction motor over a single-phase 40 marks
5. Q5 5.1 State TWO factors that influence the value of the reactance of a coil when 20 marks
6. Q6 Logic6.1 Answer the following questions in respect of PLCs.
7. Q7 Amplifiers7.1 Draw and label the symbol of an operational amplifier (op amp). (5) 50 marks

Instructions to candidates

1. This question paper consists of SEVEN questions.
2. Answer ALL the questions.
3. Sketches and diagrams must be large, neat and fully labelled.
4. Show ALL calculations and round off answers correctly to TWO dec imal places.
5. Number the answers correctly according to the numberinsyg stem used in this question paper .
6. You may use a non-programmable calculator .
7. Show the units for all answers of calculations .
8. A formula sheet is provided at the end of this question paper.
9. Write neatly and legibly.