| 1. | Which of the following circuit components opposes the change in the circuit voltage ? | |
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Conductance
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Resistance
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Inductance
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Capacitance
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Report Question| 2. | Power factor of the system is kept high ? | |
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to reduce voltage regulation of the line
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due to all above reasons
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to reduce line losses
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to maximise the utilization of the capacities of generators, lines and transformers
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| 3. | For a sine wave with peak value Imax the r.m.s. value is ? | |
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0.9 Imax
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1.414 Imax
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0.5 Imax
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0.707 Imax
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| 4. | The safest value of current the human body can carry for more than 3 second is ? | |
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15 mA
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25 Ma
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4 Ma
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9 mA
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| 5. | Pure inductive circuit ? | |
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takes power from the line during some part of the cycle and then returns back to it during other part of the cycle
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does not take power at all from a line
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consumes some power on average
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none of the above
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| 6. | For a sine wave with peak value E the average value is ? | |
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0.434 Emax
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1.414 Emax
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0.636 Emax
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0.707 Emax
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| 7. | Form factor for sine wave is ? | |
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1.11
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0.637
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1.414
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0.707
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| 8. | The ratio of active power to apparent power is known as ........ factor demand ? | |
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form
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power
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load
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Apperant
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| 9. | The inductance of a coil can be increased by ? | |
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decreasing the diameter of the former
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choosing core material having high relative permeability
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increasing core length
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decreasing the number of turns
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| 10. | The circuit whose properties are same in either direction is known as ? | |
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irreversible circuit
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reversible circuit
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unilateral circuit
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bilateral circuit
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