Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 550 Ohm 400 Ohm None of these 310 Ohm 410 Ohm 550 Ohm 400 Ohm None of these 310 Ohm 410 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts thermal energy to electrical energy is called a: piezoelectric devices None of these solar cell chemical cell thermocouple piezoelectric devices None of these solar cell chemical cell thermocouple ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrasers best describes flux density? The rate of change of the number of lines of magnetic force The force that maintains lines of force None of these The concentration of lines of magnetic force The opposition to a build-up of magnetic fields The rate of change of the number of lines of magnetic force The force that maintains lines of force None of these The concentration of lines of magnetic force The opposition to a build-up of magnetic fields ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At cut off, the Q point is at infinity middle of the load line upper end of the load line None of these lower end of the load line infinity middle of the load line upper end of the load line None of these lower end of the load line ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When the graph of current versus voltage is a straight line, the device is referred to as None of these Nonlinear Linear Bipolar Active None of these Nonlinear Linear Bipolar Active ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrases most accurately describes a purely capacitive circuit? The ac voltage leads the current by 90 degree Resistances provide the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow Capacitive reactance provides the only opposition to current flow None of these The ac voltage leads the current by 90 degree Resistances provide the only opposition to current flow Combinations of resistance and capacitive reactance provide any opposition to current flow Capacitive reactance provides the only opposition to current flow None of these ANSWER DOWNLOAD EXAMIANS APP
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