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? 200 mA 208 mA None of these 300 mA 7.8 mA 200 mA 208 mA None of these 300 mA 7.8 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the inductive reactance of a 2-H coil operating at 60 Hz? 120 Ohm None of these 754 Ohm 60 Ohm 30 Ohm 120 Ohm None of these 754 Ohm 60 Ohm 30 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A farad is defined as the amount of capacitance necessary for: causing an ac phase shift greater than 90 degree None of these changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing dissipating 1 W of power storing 1 V for 1 second causing an ac phase shift greater than 90 degree None of these changing the voltage on the plates at the rate of 1 V per second when 1 A of current is flowing dissipating 1 W of power storing 1 V for 1 second ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At cut off, the Q point is at middle of the load line None of these lower end of the load line upper end of the load line infinity middle of the load line None of these lower end of the load line upper end of the load line infinity ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rotating coil of wire in an electric motor is called the: brush armature commutator None of these loop brush armature commutator None of these loop ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A basic capacitor is composed of: two dielectrics separated by a conductor None of these two conductors separated by a dielectric two coils separated by a dielectric two coils separated by a conductor two dielectrics separated by a conductor None of these two conductors separated by a dielectric two coils separated by a dielectric two coils separated by a conductor ANSWER DOWNLOAD EXAMIANS APP
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