| 1. | Inductance of coil ? | |
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increases with the increase in supply frequency
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becomes zero with the increase in supply frequency
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is unaffected by the supply frequency
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decreases with the increase in. supply frequency
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Report Question| 2. | Power factor of magnetising component of current of a transformer is ? | |
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zero
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unity
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0.8 lag
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0.8 lead
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| 3. | Kirchhoff's current law states that ? | |
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no current can leave the junction han mo without some current entering it
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total sum of currents metting at the junction is zero
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net current flow at the junction is positive
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algebraic sum of the currents meeting at the junction is zero
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| 4. | In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of ? | |
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C only
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L or C
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R only
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L only
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| 5. | Pure inductive circuit takes power from the A.C. line when ? | |
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both applied voltage and current increase
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both applied voltage and current decrease
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applied voltage decreases but current increases
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applied voltage increases but current decreases
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| 6. | The superposition theorem is applicable to ? | |
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both current and voltage
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current, voltage and power
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voltage only
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current only
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| 7. | Kirchhoff's law is not applicable to circuits with ? | |
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distributed parameters
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non-linear resistances
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lumped parameters
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passive elements
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| 8. | For a frequency of 200 Hz the time period will be ? | |
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0.0005
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0.5 s
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0.05 s
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0.005 s
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| 9. | The concept on which Superposition theorem is based is ? | |
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non-linearity
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linearity
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reciprocity
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duality
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| 10. | Superposition theorem can be applied only to circuits having ? | |
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non-linear elements
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linear bilateral elements
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resistive elements
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passive elements
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