Electronic Principles Which one of the following statements most accurately describes the nature of inductive reactance? Inductive reactance is a force that tends to overcome the effects of counter emf Inductive reactance is an opposition to current flow in ac circuits None of these Inductive reactance is an opposition to current flow in dc circuits Inductive reactance is another term for counter emf Inductive reactance is a force that tends to overcome the effects of counter emf Inductive reactance is an opposition to current flow in ac circuits None of these Inductive reactance is an opposition to current flow in dc circuits Inductive reactance is another term for counter emf ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns? 0.41666666666667 100 A 0.1 A None of these 1000 A 0.41666666666667 100 A 0.1 A None of these 1000 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A current source has an internal resistance of 100 kW. What is the largest load resistance if the current source must appear stiff? 10 k Ohm 1 k Ohm 20 k Ohm 2 k Ohm None of these 10 k Ohm 1 k Ohm 20 k Ohm 2 k Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rise time of a pulse waveform is the time required for the voltage to rise: from 10% of the peak value to 90% of the peak value from zero to its rms value None of these from zero to its peak value from 10% of the peak value to 70.7% of the peak value from 10% of the peak value to 90% of the peak value from zero to its rms value None of these from zero to its peak value from 10% of the peak value to 70.7% of the peak value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Molecule is The smallest particle of a substance that retains the properties of that substance A atom that has an excessive number of electrons in its outer orbit A atom that has a shortage of electrons in its outer orbit A atom that flows whenever there is an imbalance of electrical charges between two points None of these The smallest particle of a substance that retains the properties of that substance A atom that has an excessive number of electrons in its outer orbit A atom that has a shortage of electrons in its outer orbit A atom that flows whenever there is an imbalance of electrical charges between two points None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a pure inductor: None of these ac current is converted to dc voltage ac current and voltage are exactly in phase ac current leads the voltage by 90 degree ac current lags the voltage by 90 degree None of these ac current is converted to dc voltage ac current and voltage are exactly in phase ac current leads the voltage by 90 degree ac current lags the voltage by 90 degree ANSWER DOWNLOAD EXAMIANS APP
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