Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 18 V 30 V 12 V 24 V None of these 18 V 30 V 12 V 24 V None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles When the collector current increases, what does the current gain do? None of these decreases stays the same increases any of the above None of these decreases stays the same increases any of the above ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the algebraic sum of this series of values:+2, -3, -6,+4? -3 -6 2 None of these -3 -6 2 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the: rotor None of these armature battery commutator rotor None of these armature battery commutator ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A transformer has a primary voltage of 120 V rms and a secondary voltage of 25 V rms. If the secondary current is 1A rms, what is the primary current? 208 mA 7.8 mA None of these 200 mA 300 mA 208 mA 7.8 mA None of these 200 mA 300 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 180 None of these 0.5 0.25 4 180 None of these 0.5 0.25 4 ANSWER DOWNLOAD EXAMIANS APP
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