Electronic Principles The core of an electromagnet is said to be in saturation when: None of these 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 changing the polarity of the current in the coil changes the polarity of the magnetic field around the core None of these 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 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 When the collector current increases, what does the current gain do? any of the above decreases increases None of these stays the same any of the above decreases increases None of these stays the same ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit? 1000 V and a series resistance of 10 k Ohm 100 V and a series resistance of 10 k Ohm 1000 V and a parallel resistance of 10 kOhm 100 V and a parallel resistance of 10 k Ohm None of these 1000 V and a series resistance of 10 k Ohm 100 V and a series resistance of 10 k Ohm 1000 V and a parallel resistance of 10 kOhm 100 V and a parallel resistance of 10 k Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a step-down transformer, which is larger? Secondary voltage Neither None of these Impossible to say Primary voltage Secondary voltage Neither None of these Impossible to say Primary voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose the peak value of a sinusoidal voltage is 50 V. What is the rms value? 30.4 V None of these 35.4 V 37.4 V 38.74 V 30.4 V None of these 35.4 V 37.4 V 38.74 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When a series RLC circuit is operating at its resonant frequency: None of these inductive reactance is greater than the capacitive reactance capacitive reactance is greater than the inductive reactance inductive reactance is equal to the capacitive reactance the difference between inductive and capacitive reactance is equal to the resistance None of these inductive reactance is greater than the capacitive reactance capacitive reactance is greater than the inductive reactance inductive reactance is equal to the capacitive reactance the difference between inductive and capacitive reactance is equal to the resistance ANSWER DOWNLOAD EXAMIANS APP
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