Electronic Principles Doubling the operating voltage of a purely capacitive circuit: multiplies the capacitive reactance by 7 cuts the capacitive reactance in half None of these doubles the amount of capacitive reactance has no effect on the capacitive reactance multiplies the capacitive reactance by 7 cuts the capacitive reactance in half None of these doubles the amount of capacitive reactance has no effect on the capacitive reactance ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts thermal energy to electrical energy is called a: thermocouple piezoelectric devices solar cell chemical cell None of these thermocouple piezoelectric devices solar cell chemical cell None of these 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? 707 V 208 V None of these 700 V 651 V 707 V 208 V None of these 700 V 651 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Silicon atoms combine into an orderly pattern called a Semiconductor Covalent bond Crystal Valence orbit None of these Semiconductor Covalent bond Crystal Valence orbit None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W? 3890 Ohm 1234 Ohm 844.5 Ohm None of these 692.2 Ohm 3890 Ohm 1234 Ohm 844.5 Ohm None of these 692.2 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: the core is permitted to move freely within the coil frequent changes in the direction of current through the coil causes heating effects in the core material None of these 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 frequent changes in the direction of current through the coil causes heating effects in the core material None of these 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 ANSWER DOWNLOAD EXAMIANS APP
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