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 None of these 300 mA 7.8 mA 200 mA 208 mA None of these 300 mA 7.8 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The dielectric constant of a material is a measure of: how well the material concentrates electrostatic lines of force the amount of voltage it can withstand before breaking down the amount of opposition to the current flow how well the material concentrates magnetic lines of force None of these how well the material concentrates electrostatic lines of force the amount of voltage it can withstand before breaking down the amount of opposition to the current flow how well the material concentrates magnetic lines of force None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 kV is: 100 mV None of these 1.00 V 1000 mV 1000 V 100 mV None of these 1.00 V 1000 mV 1000 V 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 battery armature commutator None of these rotor battery armature commutator None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used to maintain an imbalance of charges between the terminals of a battery? Solar energy Mechanical energy None of these Electronical energy Chemical energy Solar energy Mechanical energy None of these Electronical energy Chemical energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 550 Ohm 410 Ohm None of these 310 Ohm 400 Ohm 550 Ohm 410 Ohm None of these 310 Ohm 400 Ohm ANSWER DOWNLOAD EXAMIANS APP
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