Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 24 V 12 V 30 V 18 V None of these 24 V 12 V 30 V 18 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: None of these has no effect on the total circuit current cuts the total current by one-half doubles the amount of total current thrice the amount of total current None of these has no effect on the total circuit current cuts the total current by one-half doubles the amount of total current thrice the amount of total current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm? 70.7Ohm 99.3 Ohm 60 Ohm None of these 250 Ohm 70.7Ohm 99.3 Ohm 60 Ohm None of these 250 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The direction of conventional current flow is: from neutral to positive from left to right from negative to positive from positive to negative None of these from neutral to positive from left to right from negative to positive from positive to negative None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is one important thing transistors do? None of these Amplify weak signals Emit light Rectify line voltage Regulate voltage None of these Amplify weak signals Emit light Rectify line voltage Regulate voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrasers best describes flux density? The concentration of lines of magnetic force The rate of change of the number of lines of magnetic force None of these The opposition to a build-up of magnetic fields The force that maintains lines of force The concentration of lines of magnetic force The rate of change of the number of lines of magnetic force None of these The opposition to a build-up of magnetic fields The force that maintains lines of force ANSWER DOWNLOAD EXAMIANS APP
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