cameroon gce intermediate level electrical technology and diagrams 1
cameroon gce intermediate level electrical technology and diagrams 1
1. The materials suitable for the production of
brushes for rotating machines is:
| A | Copper alloy |
| B | Carbon |
| C | Aluminium |
| D | Carbite |
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2. The cross sectional area of a conductor is
2.5mm2. Calculate its radius
| A | 1.784mm |
| B | 1.25mm |
| C | 0.446mm |
| D | 0.892mm |
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3. A 240V single phase load obtains its supply from
the secondary of a transformer coupled in:
| A | Star with 415V between lines |
| B | Delta with 415V between lines |
| C | Star with 240V between lines |
| D | Delta with 240V between lines |
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4. The emf induced at the secondary of a
transformer is due to
| A | Self-induction |
| B | Magnetic induction |
| C | Mutual induction |
| D | Electromagnetic induction |
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5. The fuse to protect a heating element of 5000W at
240V is:
| A | 25A |
| B | 30A |
| C | 20A |
| D | 35A |
Mutuh Ati Landrine
November 6, 2021
I need the question to study