Electronic Principles A transistor has a current gain of 125 and a base current of 30 µA. What is the collector current? 3.2 mA 3.75 mA 0.05 mA None of these 13 mA 3.2 mA 3.75 mA 0.05 mA None of these 13 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases best describes residual magnetism? None of these The force of attraction between the poles of a permanent and temporary magnetic field The circular magnetic field that surrounds a conductor carrying a current The amount of magnetic flux that is not confined to the core material of an electromagnet Magnetism that remains in the core of an electromagnet after the current through the coil is turned off None of these The force of attraction between the poles of a permanent and temporary magnetic field The circular magnetic field that surrounds a conductor carrying a current The amount of magnetic flux that is not confined to the core material of an electromagnet Magnetism that remains in the core of an electromagnet after the current through the coil is turned off ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil None of these changing the polarity of the current in the coil changes the polarity of the magnetic field around the core frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf the core is permitted to move freely within the coil None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements best applies to a parallel RLC circuit? The sum of the current is always less than the applied current The current waveform for each component always has the same amplitude and phase as the applied current All of these The voltage waveform for each component always has the same amplitude and phase as the applied voltage None of these The sum of the current is always less than the applied current The current waveform for each component always has the same amplitude and phase as the applied current All of these The voltage waveform for each component always has the same amplitude and phase as the applied voltage None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the number of turns of wire in an inductor: multiplies the value of inductance by two None of these reduces the value of inductance by one-fourth multiplies the value of inductance by four reduces the value of inductance by one-half multiplies the value of inductance by two None of these reduces the value of inductance by one-fourth multiplies the value of inductance by four reduces the value of inductance by one-half ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for voltage in a series circuit? The total voltage is equal to the sum of the individual voltages in a series circuit None of these The total voltage in a series circuit is equal to the average value of the individual voltages The total voltage of a series circuit is equal to the total current divided by the total resistance The total voltage in a series circuit is always less than the value of the smallest voltage The total voltage is equal to the sum of the individual voltages in a series circuit None of these The total voltage in a series circuit is equal to the average value of the individual voltages The total voltage of a series circuit is equal to the total current divided by the total resistance The total voltage in a series circuit is always less than the value of the smallest voltage ANSWER DOWNLOAD EXAMIANS APP
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