| 1. | Permeance is to reluctance as conductance is to ? | |
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ampere turns
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inductance
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capacitance
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resistance
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Report Question| 2. | Conductance is analogous to ? | |
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permeance
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reluctance
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flux
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inductance
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| 3. | The area of hysteresis loss is a measure of ? | |
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permittivity
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permeance
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energy loss per cycle
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magnetic flux
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| 4. | A ferromagnetic core subjected to cycles of magnetisation will exhibit hysteresis when the cycle is ? | |
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rotating
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alternating
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pulsating
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any of the above
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| 5. | Silicon steel is used in electrical machines because it has ? | |
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low coercivity
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low retentivity
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low hysteresis loss
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high coercivity
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| 6. | When both the inductance and resistance of a coil are doubled the value of ? | |
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time constant remains unchanged
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initial rate of rise of current is doubled
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final steady current is doubled
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time constant is halved
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| 7. | Permeability in a magnetic circuit corresponds to in an electric circuit ? | |
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resistance
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resistivity
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conductivity
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conductance
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| 8. | The unit of magnetic flux is ? | |
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henry
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weber
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ampere-turn/weber
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ampere/metre
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| 9. | Permanent magnets are normally made of ? | |
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alnico alloys
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aluminium
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cast iron
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wrought iron
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| 10. | Those magnetic materials are best suited for making armature and transformer cores which have .. . . . . permeability and ......... hystersis loss ? | |
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high, high
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low, high
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high, low
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low, low
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