Electronic Principles In an intrinsic semiconductor, the number of free electrons Is greater than the number of holes Equals the number of holes Is less than the number of holes None of these Impossible to say Is greater than the number of holes Equals the number of holes Is less than the number of holes None of these Impossible to say ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the phase shift between total current and voltage in the circuit of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm 75 degree None of these 30 degree 45 degree 180 degree 75 degree None of these 30 degree 45 degree 180 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? Two - a negative terminal and a positive terminal One - a negative terminal None of these Three - negative, positive and neutral terminals Four - two negative and two positive Two - a negative terminal and a positive terminal One - a negative terminal None of these Three - negative, positive and neutral terminals Four - two negative and two positive 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 0.6 A None of these 0.3 A 0.4 A 0.2 A 0.6 A None of these 0.3 A 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? 200 k Ohm or more None of these 200 k Ohm or less 20 k Ohm or more 20 km or less 200 k Ohm or more None of these 200 k Ohm or less 20 k Ohm or more 20 km or less ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Assuming 100% efficiency, what is the power being applied to the primary winding of the transformer described in the above question? 1000 W 200 W None of these 20 W 100 W 1000 W 200 W None of these 20 W 100 W ANSWER DOWNLOAD EXAMIANS APP
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