| 1. | The starting torque of a 1-phase induction motor is ? | |
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High
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Moderate
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low
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Zero
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Report Question| 2. | In a shaded pole single-phase motor, the revolving field is produced by the use of ? | |
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inductor
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capacitor
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resistor
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shading coils
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| 3. | The repulsion-start induction-run motor is used because of ? | |
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good power factor
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high efficiency
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minimum cost
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high starting torque
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| 4. | The rotor slots, in an induction motor, are usually not quite parallel to the shaft because it ? | |
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improves the efficiency
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helps the rotor teeth to remain under the stator teeth
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helps in reducing the tendency of the rotor teeth to remain under the stator teeth
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improves the power factor
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| 5. | A shaded pole motor Can be used for ? | |
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toys
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hair dryers
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circulators
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any of the options
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| 6. | The rotor of a hysteresis motor is made of ? | |
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aluminium
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cast iron
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chrome steel
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copper
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| 7. | The main advantage of AC transmission system over DC transmission system is ? | |
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easy transformation
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less losses in transmission over long distances
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less insulation problems
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less problem of instability
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| 8. | Next lower voltage line feeding areas on either side of the main transmission line is called ? | |
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secondary distribution
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secondary transmission
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primary transmission
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primary distribution
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| 9. | The insulating material for cables should have ? | |
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high dielectric strength
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high mechanical strength
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low cost
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all options are correct
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| 10. | The main source of hydro-electric power station is ? | |
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coal
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generator
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water
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nuclear
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