10.1 Define an electric motor. 10.2 Name ONE characteristic that makes this DC motor. 10.3 State whether the coil will rotate CLOCKWISE or ANTI-CLOCKWISE. Assume that the coil is observed from point O. 10.4 State the energy conversion that takes place in an AC generator. 10.5 A transformer has 1500 secondary turns and 250 primary turns. If the secondary voltage is 240 V, determine the primary voltage.

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10.1 Define an electric motor - NSC Technical Sciences - Question 10 - 2022 - Paper 1

Question 10

10.1 Define an electric motor. 10.2 Name ONE characteristic that makes this DC motor. 10.3 State whether the coil will rotate CLOCKWISE or ANTI-CLOCKWISE. Assume t... show full transcript

Worked Solution & Example Answer:10.1 Define an electric motor - NSC Technical Sciences - Question 10 - 2022 - Paper 1

Step 1

Define an electric motor.

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Answer

An electric motor is a device that converts electrical energy into mechanical energy.

Step 2

Name ONE characteristic that makes this DC motor.

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Answer

The motor uses a split ring commutator.

Step 3

State whether the coil will rotate CLOCKWISE or ANTI-CLOCKWISE.

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Answer

The coil will rotate ANTI-CLOCKWISE when observed from point O.

Step 4

State the energy conversion that takes place in an AC generator.

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Answer

Mechanical energy is converted into electrical energy.

Step 5

If the secondary voltage is 240 V, determine the primary voltage.

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Answer

Using the transformer equation, we have:

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

Substituting the known values:

$\frac{240}{V_p} = \frac{1500}{250}$

This simplifies to:

$V_p = \frac{240 \times 250}{1500} = 40 \text{ V}$

Thus, the primary voltage is 40 V.

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