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? None of these 200 mA 208 mA 300 mA 7.8 mA None of these 200 mA 208 mA 300 mA 7.8 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the algebraic sum of this series of values:+2, -3, -6,+4? 2 None of these -6 -3 2 None of these -6 -3 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the voltage in a parallel RC circuit? The voltage always has the same amplitude and phase for every part of the circuit The total voltage is less than the sum of the voltages across the resistance and capacitance None of these The total voltage is equal to the sum of the voltages across the resistance and capacitance The total voltage leads the total current by less than 90 degree The voltage always has the same amplitude and phase for every part of the circuit The total voltage is less than the sum of the voltages across the resistance and capacitance None of these The total voltage is equal to the sum of the voltages across the resistance and capacitance The total voltage leads the total current by less than 90 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The basic unit of measurement for current is the: watt ampere ohm volt None of these watt ampere ohm volt None of these ANSWER DOWNLOAD EXAMIANS APP
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 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 the core is permitted to move freely within the coil None of these 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 the core is permitted to move freely within the coil ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The current gain of a transistor is defined as the ratio of the collector current to the supply current collector current base current emitter current None of these supply current collector current base current emitter current None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS