Define the term generator. State whether this is a DC or an AC generator. Give a reason for the answer to QUESTION 10.2. A diagram of a transformer is shown below. The transformer has 40 turns on the primary coil and 80 turns on the secondary coil. The voltage on the primary coil is 120 volt. Explain why this is a step-up transformer. Calculate the value of the secondary voltage.

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Define the term generator - NSC Technical Sciences - Question 10 - 2023 - Paper 1

Question 10

Define the term generator. State whether this is a DC or an AC generator. Give a reason for the answer to QUESTION 10.2. A diagram of a transformer is shown below... show full transcript

Worked Solution & Example Answer:Define the term generator - NSC Technical Sciences - Question 10 - 2023 - Paper 1

Step 1

Define the term generator.

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Answer

A generator is a device that converts mechanical energy into electrical energy.

Step 2

State whether this is a DC or an AC generator.

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Answer

This is an AC generator.

Step 3

Give a reason for the answer to QUESTION 10.2.

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Answer

AC generators have slip rings, which are characteristic of AC generation.

Step 4

Explain why this is a step-up transformer.

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Answer

This is a step-up transformer because the number of turns in the secondary coil (80 turns) is greater than the number of turns in the primary coil (40 turns).

Step 5

Calculate the value of the secondary voltage.

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Answer

The voltage on the secondary coil can be calculated using the transformer equation:

$\frac{V_s}{V_p} = \frac{N_s}{N_p}$

Given that:

$N_p = 40$
$N_s = 80$
$V_p = 120$ V

We have:

$\frac{V_s}{120} = \frac{80}{40}$

Therefore, we can solve for $V_s$ :

$V_s = 120 \times 2 = 240 \text{ volts}$

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