Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature 0oC Decreases None of these Increases Stays the same 0oC Decreases None of these Increases Stays the same 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? None of these 0.2 A 0.4 A 0.3 A 0.6 A None of these 0.2 A 0.4 A 0.3 A 0.6 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrasers best describes flux density? The opposition to a build-up of magnetic fields The rate of change of the number of lines of magnetic force The force that maintains lines of force None of these The concentration of lines of magnetic force The opposition to a build-up of magnetic fields The rate of change of the number of lines of magnetic force The force that maintains lines of force None of these The concentration of lines of magnetic force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a load resistance is 1 kW, a stiff voltage source has a resistance of less than 10 Ohm More than 100 k Ohm At least 10 Ohm Less than 100 k Ohm None of these less than 10 Ohm More than 100 k Ohm At least 10 Ohm Less than 100 k Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz? 312 Ohm less than 1 Ohm None of these 1590 Ohm 690 Ohm 312 Ohm less than 1 Ohm None of these 1590 Ohm 690 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff? 10 Ohm 30 Ohm None of these 20 Ohm 100 Ohm 10 Ohm 30 Ohm None of these 20 Ohm 100 Ohm ANSWER DOWNLOAD EXAMIANS APP
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