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? 3 43891 None of these 2 43922 3 43891 None of these 2 43922 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 2-H coil operating at 60 Hz? 60 Ohm 754 Ohm 120 Ohm 30 Ohm None of these 60 Ohm 754 Ohm 120 Ohm 30 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases best describes residual magnetism? The circular magnetic field that surrounds a conductor carrying a current None of these The amount of magnetic flux that is not confined to the core material of an electromagnet The force of attraction between the poles of a permanent and temporary magnetic field Magnetism that remains in the core of an electromagnet after the current through the coil is turned off The circular magnetic field that surrounds a conductor carrying a current None of these The amount of magnetic flux that is not confined to the core material of an electromagnet The force of attraction between the poles of a permanent and temporary magnetic field Magnetism that remains in the core of an electromagnet after the current through the coil is turned off ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: cuts the total current by one-half thrice the amount of total current has no effect on the total circuit current None of these doubles the amount of total current cuts the total current by one-half thrice the amount of total current has no effect on the total circuit current None of these doubles the amount of total current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The current gain of a transistor is defined as the ratio of the collector current to the emitter current supply current collector current None of these base current emitter current supply current collector current None of these base current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Like magnetic poles repel, while unlike poles attract Current is induced in a conductor that is moving through a magnetic field Current flowing through a conductor generates a magnetic field Like magnetic poles attract, while unlike poles repel None of these Like magnetic poles repel, while unlike poles attract Current is induced in a conductor that is moving through a magnetic field Current flowing through a conductor generates a magnetic field Like magnetic poles attract, while unlike poles repel None of these ANSWER DOWNLOAD EXAMIANS APP
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