Electronic Principles Current and voltage are said to be in phase when: they have the same amplitude and frequency their waveforms are both ac or both dc All of these their waveforms cross through zero and reach positive and negative peaks at the same time None of these they have the same amplitude and frequency their waveforms are both ac or both dc All of these their waveforms cross through zero and reach positive and negative peaks at the same time None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Holes are the minority carriers in which type of semiconductor? p-type n-type None of these Extrinsic Intrinsic p-type n-type None of these Extrinsic Intrinsic ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a direct statement of Ohm's law? The algebraic sum of currents entering and leaving a point is equal to zero The algebraic sum of voltages in a loop is equal to zero None of these The total resistance of a parallel circuit is less than the value of the smallest resistance The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it The algebraic sum of currents entering and leaving a point is equal to zero The algebraic sum of voltages in a loop is equal to zero None of these The total resistance of a parallel circuit is less than the value of the smallest resistance The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is a free electron? An electron that has been freed from its parent atom An electron that costs nothing An electron that has twice the amount of charge of a normal electron An electron that has no electrical charge None of these An electron that has been freed from its parent atom An electron that costs nothing An electron that has twice the amount of charge of a normal electron An electron that has no electrical charge None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 208 mA 300 mA 7.8 mA 200 mA None of these 208 mA 300 mA 7.8 mA 200 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transistor has how many doped regions? 3 4 1 None of these 2 3 4 1 None of these 2 ANSWER DOWNLOAD EXAMIANS APP
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