Electronic Principles The rise time of a pulse waveform is the time required for the voltage to rise: from zero to its rms value from zero to its peak value from 10% of the peak value to 90% of the peak value from 10% of the peak value to 70.7% of the peak value None of these from zero to its rms value from zero to its peak value from 10% of the peak value to 90% of the peak value from 10% of the peak value to 70.7% of the peak value None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.4 A 0.2 A 0.3 A 0.6 A None of these 0.4 A 0.2 A 0.3 A 0.6 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff? 20 km or less 20 k Ohm or more 200 k Ohm or more None of these 200 k Ohm or less 20 km or less 20 k Ohm or more 200 k Ohm or more None of these 200 k Ohm or less ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the: rotor commutator None of these battery armature rotor commutator None of these battery armature ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding? 0.20833333333333 50 A 20 A None of these 0.20833333333333 50 A 20 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating voltage of a purely capacitive circuit: doubles the amount of capacitive reactance multiplies the capacitive reactance by 7 cuts the capacitive reactance in half None of these has no effect on the capacitive reactance doubles the amount of capacitive reactance multiplies the capacitive reactance by 7 cuts the capacitive reactance in half None of these has no effect on the capacitive reactance ANSWER DOWNLOAD EXAMIANS APP
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