cameroon gce intermediate level electrical machines 1
cameroon gce intermediate level electrical machines 1
1. The unit of magnetic flux is:
| A | Weber |
| B | Tesla |
| C | Ampere-turn |
| D | Ampere/metre |
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2. In a short shunt dc generator, the series field
is excited by:
| A | Ish |
| B | Ia |
| C | Ia-IL |
| D | IL |
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3. The flux in the air-gap of a machine is
0.2Mwb and the cross-sectional area of the
gap is 500mm2. What is the flux density in
the air gap?
| A | 2.5T |
| B | 0.4T |
| C | 0.0004T |
| D | 100T |
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4. A dc motor is considered as a generator when
the power flow is:
| A | Reduced |
| B | Increase |
| C | Reversed |
| D | Modified |
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5. The main reason for proving compensating
winding in a dc generator is to:
| A | Compensate for decrease in the main flux |
| B | Neutralize armature magneto motive force |
| C | Neutralize cross magnetizing flux |
| D | Maintain uniform flux distribution |
Blesskid
August 17, 2021
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Morel
November 20, 2023
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Tedongmo Fopa
January 29, 2024
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