Electronic Principles Which one of the following principles best describes the basic operation of a generator? Like magnetic poles attract; unlike poles repel Current flowing through a conductor generates a magnetic field Like magnetic poles repel; unlike poles attract Current is induced in a conductor that is moving through a magnetic field None of these Like magnetic poles attract; unlike poles repel Current flowing through a conductor generates a magnetic field Like magnetic poles repel; unlike poles attract Current is induced in a conductor that is moving through a magnetic field None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used to maintain an imbalance of charges between the terminals of a battery? Mechanical energy Chemical energy Solar energy None of these Electronical energy Mechanical energy Chemical energy Solar energy None of these Electronical energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a capacitive circuit: cuts the capacitive reactance in half None of these doubles the amount of a capacitive reactance multiplies the capacitive reactance by 6.28 has no effect on the capacitive reactance cuts the capacitive reactance in half None of these doubles the amount of a capacitive reactance multiplies the capacitive reactance by 6.28 has no effect on the capacitive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature None of these Decreases Increases Stays the same 0oC None of these Decreases Increases Stays the same 0oC ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Free electrons Doping None of these Thermal energy Valence electrons Free electrons Doping None of these Thermal energy Valence electrons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a statement of Kirchhoffs current law? The current through a resistance is proportional to the value of resistance and the IR drop across it None of these The total current in a parallel circuit is less than the value of the smallest current The algebraic sum of currents entering and leaving a point is equal to zero The algebraic sum of currents in a loop is equal to zero The current through a resistance is proportional to the value of resistance and the IR drop across it None of these The total current in a parallel circuit is less than the value of the smallest current The algebraic sum of currents entering and leaving a point is equal to zero The algebraic sum of currents in a loop is equal to zero ANSWER DOWNLOAD EXAMIANS APP
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