Electronic Principles A device that converts light energy to electrical energy is called a: solar cell None of these photo transistor thermocouple photodiode solar cell None of these photo transistor thermocouple photodiode ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: 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 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Assuming 100% efficiency, what is the power being applied to the primary winding of the transformer described in the above question? 20 W None of these 1000 W 100 W 200 W 20 W None of these 1000 W 100 W 200 W ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A real voltage source has None of these A large internal resistance A small internal resistance Infinite internal resistance Zero internal resistance None of these A large internal resistance A small internal resistance Infinite internal resistance Zero internal resistance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? None of these 208 V 707 V 651 V 700 V None of these 208 V 707 V 651 V 700 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total impedance of a parallel RLC circuit: None of these is equal to the sum of the values of resistance, inductive reactance and capacitive reactance is maximum at the resonant frequency always decreases as the applied frequency increases always increases as the applied frequency increases None of these is equal to the sum of the values of resistance, inductive reactance and capacitive reactance is maximum at the resonant frequency always decreases as the applied frequency increases always increases as the applied frequency increases ANSWER DOWNLOAD EXAMIANS APP
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