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? 28.4 mA 68.4 mA 24.2 mA 34.4 mA None of these 28.4 mA 68.4 mA 24.2 mA 34.4 mA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total impedance of a parallel RLC circuit: is maximum at the resonant frequency always decreases as the applied frequency increases None of these is equal to the sum of the values of resistance, inductive reactance and capacitive reactance always increases as the applied frequency increases is maximum at the resonant frequency always decreases as the applied frequency increases None of these is equal to the sum of the values of resistance, inductive reactance and capacitive reactance always increases as the applied frequency increases ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What kind of battery is most likely included in a cordless electric knife? Mercury-cell battery Zinc-carbon battery Lead-acid battery None of these Nicad battery Mercury-cell battery Zinc-carbon battery Lead-acid battery None of these Nicad battery ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles An intrinsic semiconductor has some holes in it at room temperature. What causes these holes? Valence electrons Free electrons Thermal energy Doping None of these Valence electrons Free electrons Thermal energy Doping None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements applies to common, non-rechargeable flashlight batteries? Common flashlight batteries are secondary dry-cell batteries Common flashlight batteries are primary dry-cell batteries None of these Common flashlight batteries are primary wet-cell batteries Common flashlight batteries are secondary wet-cell batteries Common flashlight batteries are secondary dry-cell batteries Common flashlight batteries are primary dry-cell batteries None of these Common flashlight batteries are primary wet-cell batteries Common flashlight batteries are secondary wet-cell batteries ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rotating coil of wire in an electric motor is called the: commutator loop brush None of these armature commutator loop brush None of these armature ANSWER DOWNLOAD EXAMIANS APP
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