Electronic Principles Which one of the following devices is most often used for measuring opposition to current flow in a circuit? Wattmeter Voltmeter None of these Ohmmeter Ammeter Wattmeter Voltmeter None of these Ohmmeter Ammeter 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? None of these 70.7Ohm 99.3 Ohm 250 Ohm 60 Ohm None of these 70.7Ohm 99.3 Ohm 250 Ohm 60 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic silicon crystal acts approximately like a piece of copper wire a conductor a battery None of these an insulator a piece of copper wire a conductor a battery None of these an insulator 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 None of these 700 V 208 V 651 V 707 V None of these 700 V 208 V 651 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a step-down transformer, which is larger? Neither Impossible to say None of these Secondary voltage Primary voltage Neither Impossible to say None of these Secondary voltage Primary voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? 34.4 mA 24.2 mA None of these 28.4 mA 68.4 mA 34.4 mA 24.2 mA None of these 28.4 mA 68.4 mA ANSWER DOWNLOAD EXAMIANS APP
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