| 1. | If a circuit does not contain any source of energy or e.m.f. it is known as ? | |
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passive network
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active network
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unilateral circuit
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bilateral circuit
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Report Question| 2. | Time constant of a circuit is the time in seconds taken after the application of voltage to reach ? | |
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63% of maximum value
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90% of maximum value
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25% of maximum value
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50% of maximum value
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| 3. | The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as ? | |
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bilateral circuit
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non-linear circuit
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linear circuit
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none of the above
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| 4. | In any A.C. circuit always ? | |
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actual power is more than reactive power
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reactive power is more actual power than
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reactive power is more than apparent power
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apparent power is more than actual power
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| 5. | Efficiency of power transfer when maximum transfer of power occurs is ? | |
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75%
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50%
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100%
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80%
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| 6. | Between the branch voltages of a loop the Kirchhoff's voltage law imposes ? | |
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no constraints
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non-linear constraints
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linear constraints
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none of the above
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| 7. | If two sine waves of the same frequency have a phase difference of it radians, then ? | |
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when one wave reaches its maxi mum value, the other will reach its minimum value
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both will reach their minimum values at the same instant
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both will reach their maximum values at the same instant
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none of the above
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| 8. | Inductance of a coil varies ? | |
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directly as the permeability of the core
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inversely as the length of the iron path
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directly as the cross-sectional area of magnetic core
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indirectly as square of number of turns
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| 9. | For 200V r.m.s. value triangular wave, the peak voltage will be ? | |
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282 V
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346 V
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200 V
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222 V
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| 10. | To determine the polarity of the voltage drop across a resistor, it is necessary to know ? | |
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value of resistor
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e.m.fs. in the circuit
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value of current through the resistor
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direction of current through the resistor
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