Electronic Principles At room temperature an intrinsic silicon crystal acts approximately like a battery an insulator a conductor None of these a piece of copper wire a battery an insulator a conductor None of these a piece of copper wire ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current is The flow of charged particles through a material None of these The force that causes electrons to flow The number of free electrons in an atom An imbalance of electrical charges The flow of charged particles through a material None of these The force that causes electrons to flow The number of free electrons in an atom An imbalance of electrical charges ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm? 220 ohm 445 ohm None of these 150 ohm 690 ohm 220 ohm 445 ohm None of these 150 ohm 690 ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? None of these 4 0.25 0.5 180 None of these 4 0.25 0.5 180 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding? 2 None of these 3 43922 43891 2 None of these 3 43922 43891 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely capacitive circuit? Resistances provide the only opposition to current flow The ac voltage leads the current by 90 degree None of these Capacitive reactance provides the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow Resistances provide the only opposition to current flow The ac voltage leads the current by 90 degree None of these Capacitive reactance provides the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow ANSWER DOWNLOAD EXAMIANS APP
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