Electronic Principles Doubling the number of turns of wire in an inductor: reduces the value of inductance by one-half reduces the value of inductance by one-fourth multiplies the value of inductance by two multiplies the value of inductance by four None of these reduces the value of inductance by one-half reduces the value of inductance by one-fourth multiplies the value of inductance by two multiplies the value of inductance by four None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The secondary voltage for a certain power transformer is twice the voltage applied to the primary. The current flowing in the secondary winding will be: Same as the primary current None of these Twice the primary current No more than 10% less than the primary current One-half the primary current Same as the primary current None of these Twice the primary current No more than 10% less than the primary current One-half the primary current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely capacitive circuit? The ac voltage leads the current by 90 degree Combinations of resistance and capacitive reactance provide any opposition to current flow Capacitive reactance provides the only opposition to current flow Resistances provide the only opposition to current flow None of these The ac voltage leads the current by 90 degree Combinations of resistance and capacitive reactance provide any opposition to current flow Capacitive reactance provides the only opposition to current flow Resistances provide the only opposition to current flow None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: the core is permitted to move freely within the coil an increase in current through the coil causes no further increase in the mmf frequent changes in the direction of current through the coil causes heating effects in the core material None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core the core is permitted to move freely within the coil an increase in current through the coil causes no further increase in the mmf frequent changes in the direction of current through the coil causes heating effects in the core material None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm? 70.7Ohm 250 Ohm 60 Ohm 99.3 Ohm None of these 70.7Ohm 250 Ohm 60 Ohm 99.3 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating? None of these P = E2/R I = P/E R = E2/P P = PR None of these P = E2/R I = P/E R = E2/P P = PR ANSWER DOWNLOAD EXAMIANS APP
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