Electronic Principles When the collector current increases, what does the current gain do? stays the same None of these decreases increases any of the above stays the same None of these decreases increases any of the above ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 208 mA 300 mA None of these 7.8 mA 200 mA 208 mA 300 mA None of these 7.8 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles To get the Norton current, you have to Short the voltage source Open the voltage source Short the load resistor Open the load resistor None of these Short the voltage source Open the voltage source Short the load resistor Open the load resistor None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements regarding ac circuits is correct? Current leads the voltage through a resistor Current lags the voltage through a resistor All of these None of these Current and voltages are in phase through a resistor Current leads the voltage through a resistor Current lags the voltage through a resistor All of these None of these Current and voltages are in phase through a resistor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit? None of these Flux density Magnetomotive force Number of lines of force Reluctance None of these Flux density Magnetomotive force Number of lines of force Reluctance 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 frequent changes in the direction of current through the coil causes heating effects in the core material changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf None of these the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf None of these ANSWER DOWNLOAD EXAMIANS APP
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