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 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 None of these the core is permitted to move freely within the coil an increase in current through the coil causes no further increase in the mmf 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 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the barrier potential of a silicon diode at room temperature? 2 m V per degree Celsius 0.7V 1 V None of these 0.3V 2 m V per degree Celsius 0.7V 1 V None of these 0.3V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles To get the Norton current, you have to Open the voltage source Open the load resistor Short the load resistor Short the voltage source None of these Open the voltage source Open the load resistor Short the load resistor Short the voltage source None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used to maintain an imbalance of charges between the terminals of a battery? Chemical energy Electronical energy Mechanical energy Solar energy None of these Chemical energy Electronical energy Mechanical energy Solar energy None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the capacitive reactance of a 0.1 micro F capacitor that is operating at 1000 Hz? less than 1 Ohm 312 Ohm 690 Ohm 1590 Ohm None of these less than 1 Ohm 312 Ohm 690 Ohm 1590 Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the algebraic sum of this series of values:+2, -3, -6,+4? -6 -3 2 None of these -6 -3 2 None of these ANSWER DOWNLOAD EXAMIANS APP
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