1.1 The following can be considered as dangerous practices:
A - NSC Electrical Technology Power Systems - Question 1 - 2023 - Paper 1
Question 1
1.1 The following can be considered as dangerous practices:
A. The use (or misuse) of power tools
B. The incorrect use and handling of hand tools
C. The etching of ... show full transcript
Worked Solution & Example Answer:1.1 The following can be considered as dangerous practices:
A - NSC Electrical Technology Power Systems - Question 1 - 2023 - Paper 1
Step 1
The following can be considered as dangerous practices:
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Answer
The correct option is A. The use (or misuse) of power tools is a common dangerous practice in various fields. The other options highlight potential risks, but A encompasses a broader range of dangerous practices.
Step 2
... is the reference quantity in a parallel RLC circuit.
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Answer
The correct answer is D. Voltage. In a parallel RLC circuit, the voltage across all components remains the same, making it the reference quantity.
Step 3
The reactance of a ... must be equal for a circuit to resonate.
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Answer
The correct option is C. capacitor and an inductor. For resonance to occur, the reactance of the capacitor must equal the reactance of the inductor, leading to impedance cancellation.
Step 4
The following condition is common to both series and parallel resonance:
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Answer
The correct answer is A. The impedance is minimum. This condition is true at resonance where the overall impedance of the circuit is at its lowest.
Step 5
The voltage generated at power stations in South Africa is stepped up to ... for transmission over long distances.
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Answer
The correct choice is D. 220 kV. High voltage levels like 220 kV are utilized in power transmission to minimize losses over long distances.
Step 6
... establish how much electricity must be generated throughout South Africa.
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Answer
The correct answer is A. Municipalities. They play a key role in determining the overall electricity generation needs by assessing demand within their areas.
