Electronic Principles A zener diode has a voltage of 10 V and a current of 20 mA. What is the power dissipation? 20 mW None of these 200 mW 300 mW 10 mW 20 mW None of these 200 mW 300 mW 10 mW 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: armature rotor None of these commutator battery armature rotor None of these commutator battery ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature a conductor has low many holes? many less than the free electrons Same number as free electrons None of these Only those produced by thermal energy many less than the free electrons Same number as free electrons None of these Only those produced by thermal energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the diameter of the coil in an inductor: reduces the value of inductance by one-half multiplies the value of inductance by four multiplies the value of inductance by two None of these reduces the value of inductance by one-fourth reduces the value of inductance by one-half multiplies the value of inductance by four multiplies the value of inductance by two None of these reduces the value of inductance by one-fourth ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for the voltage in a parallel RL circuit? The total voltage lags the total current by less than 90 The total voltages is less than the sum of the voltages across the resistance and inductance The voltage always has the same amplitude and phase for every part of the circuit The total voltage is equal to the sum of the voltages across the resistance and inductance None of these The total voltage lags the total current by less than 90 The total voltages is less than the sum of the voltages across the resistance and inductance The voltage always has the same amplitude and phase for every part of the circuit The total voltage is equal to the sum of the voltages across the resistance and inductance None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.3 A None of these 0.2 A 0.6 A 0.4 A 0.3 A None of these 0.2 A 0.6 A 0.4 A ANSWER DOWNLOAD EXAMIANS APP
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