Electronic Principles Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? None of these The voltage reverses polarity periodically The voltage causes current to flow in two directions at the same time The voltage remains at one polarity but changes value periodically The voltage remains at one polarity and at a steady level None of these The voltage reverses polarity periodically The voltage causes current to flow in two directions at the same time The voltage remains at one polarity but changes value periodically The voltage remains at one polarity and at a steady level ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz? None of these less than 1 Ohm 690 Ohm 1590 Ohm 312 Ohm None of these less than 1 Ohm 690 Ohm 1590 Ohm 312 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a statement of KirchhofFs voltage law? 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 voltages entering and leaving a point is equal to zero None of these The algebraic sum of voltages in a loop is equal to zero The total voltage in a parallel circuit is less than the value of the smallest voltage 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 voltages entering and leaving a point is equal to zero None of these The algebraic sum of voltages in a loop is equal to zero The total voltage in a parallel circuit is less than the value of the smallest voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 2-H coil operating at 60 Hz? 60 Ohm None of these 754 Ohm 30 Ohm 120 Ohm 60 Ohm None of these 754 Ohm 30 Ohm 120 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Current is induced in a conductor that is moving through a magnetic field Current flowing through a conductor generates a magnetic field None of these Like magnetic poles repel, while unlike poles attract Like magnetic poles attract, while unlike poles repel Current is induced in a conductor that is moving through a magnetic field Current flowing through a conductor generates a magnetic field None of these Like magnetic poles repel, while unlike poles attract Like magnetic poles attract, while unlike poles repel ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a step-down transformer, which is larger? Secondary voltage Neither None of these Primary voltage Impossible to say Secondary voltage Neither None of these Primary voltage Impossible to say ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS