Electronic Principles Which one of the following devices is most often used for measuring opposition to current flow in a circuit? None of these Voltmeter Wattmeter Ammeter Ohmmeter None of these Voltmeter Wattmeter Ammeter Ohmmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Decreases 0oC None of these Stays the same Increases Decreases 0oC None of these Stays the same Increases ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a step-down transformer, which is larger? Impossible to say Primary voltage Neither Secondary voltage None of these Impossible to say Primary voltage Neither Secondary voltage None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The nucleus of the copper atom contains how many protons? 18 4 None of these 29 1 18 4 None of these 29 1 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The dielectric constant of a material is a measure of: None of these the amount of opposition to the current flow how well the material concentrates electrostatic lines of force the amount of voltage it can withstand before breaking down how well the material concentrates magnetic lines of force None of these the amount of opposition to the current flow how well the material concentrates electrostatic lines of force the amount of voltage it can withstand before breaking down how well the material concentrates magnetic lines of force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements most accurately reflects the nature of ac power? The current in an ac circuit changes direction periodically None of these The current in an ac circuit flows in two directions at the same time The current in an ac circuit flows in one direction at a steady level The current in an ac circuit flows in one direction, but changes value periodically The current in an ac circuit changes direction periodically None of these The current in an ac circuit flows in two directions at the same time The current in an ac circuit flows in one direction at a steady level The current in an ac circuit flows in one direction, but changes value periodically ANSWER DOWNLOAD EXAMIANS APP
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