Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Decreases None of these 0oC Increases Stays the same Decreases None of these 0oC Increases Stays the same ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit? Reluctance Flux density Number of lines of force None of these Magnetomotive force Reluctance Flux density Number of lines of force None of these Magnetomotive force 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? None of these 300 mA 7.8 mA 208 mA 200 mA None of these 300 mA 7.8 mA 208 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a capacitive circuit: cuts the capacitive reactance in half has no effect on the capacitive reactance None of these doubles the amount of a capacitive reactance multiplies the capacitive reactance by 6.28 cuts the capacitive reactance in half has no effect on the capacitive reactance None of these doubles the amount of a capacitive reactance multiplies the capacitive reactance by 6.28 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately describes the nature of inductive reactance? None of these Inductive reactance is an opposition to current flow in ac circuits Inductive reactance is a force that tends to overcome the effects of counter emf Inductive reactance is another term for counter emf Inductive reactance is an opposition to current flow in dc circuits None of these Inductive reactance is an opposition to current flow in ac circuits Inductive reactance is a force that tends to overcome the effects of counter emf Inductive reactance is another term for counter emf Inductive reactance is an opposition to current flow in dc circuits ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The direction of electron current flow is: from right to left from positive to negative None of these from negative to positive from neutral to positive from right to left from positive to negative None of these from negative to positive from neutral to positive ANSWER DOWNLOAD EXAMIANS APP
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