QUESTION 1: MULTIPLE-CHOICE QUESTIONS
Various options are provided as possible answers to the following questions - NSC Electrical Technology Electronics - Question 1 - 2024 - Paper 1
Question 1
QUESTION 1: MULTIPLE-CHOICE QUESTIONS
Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D)... show full transcript
Worked Solution & Example Answer:QUESTION 1: MULTIPLE-CHOICE QUESTIONS
Various options are provided as possible answers to the following questions - NSC Electrical Technology Electronics - Question 1 - 2024 - Paper 1
Step 1
1.1 A burn must be treated by …
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Answer
A burn should be treated by running cold water over the burnt area until the pain reduces (D). This method helps to cool the burn and reduce damage to the tissue.
Step 2
1.2 The power in an inductor is …
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Answer
The correct answer is reactive power (C). In an inductor, the energy is stored in the magnetic field, and thus it does not contribute to active power.
Step 3
1.3 A parallel RLC circuit is more capacitive when …
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Answer
The circuit is more capacitive when XC>XL (A). This indicates that the capacitive reactance is greater than the inductive reactance, affecting the overall impedance.
Step 4
1.4 An increase in resistance of a parallel resonant circuit will cause the total current to …
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Answer
The total current will decrease (B). An increase in resistance in a parallel circuit reduces the overall current flow.
Step 5
1.5 A UJT will go into a permanent ON state when it reaches the … region.
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Answer
The correct answer is saturation (B). This is the region where the UJT becomes fully on and remains in that state.
Step 6
1.6 The characteristics of a Darlington transistor amplifier are …
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Answer
The characteristics include higher input impedance and lower current gain (B). A Darlington pair provides high input impedance but may exhibit lower output current compared to single transistors.
Step 7
1.7 The 555 IC functions as a … in an astable mode of operation.
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Answer
The 555 IC functions as a free-running oscillator (C) in astable mode, generating a continuous square wave output.
Step 8
1.8 The main characteristics of operational amplifiers are …
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Answer
Operational amplifiers are known for very high output impedance, low input impedance, high voltage gain, and wide bandwidth (A). These features make them versatile for various applications.
