Electronic Principles Which one of the following statements most accurately reflects the nature of ac power? The current in an ac circuit flows in one direction, but changes value periodically 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 None of these The current in an ac circuit changes direction periodically The current in an ac circuit flows in one direction, but changes value periodically 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 None of these The current in an ac circuit changes direction periodically ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A dielectric material is: a good insulator None of these a good conductor a good conductor of magnetic fields a poor conductor of electrostatic fields a good insulator None of these a good conductor a good conductor of magnetic fields a poor conductor of electrostatic fields ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The nucleus of the copper atom contains how many protons? 18 29 4 None of these 1 18 29 4 None of these 1 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles One henry of inductance is defined as: the amount of inductance required to change the frequency of a current by 1 Hz the amount of counter emf required to reduce a current to 1 A None of these the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second the number of turns of wire in an inductor multiplied by the amount of current flowing through it the amount of inductance required to change the frequency of a current by 1 Hz the amount of counter emf required to reduce a current to 1 A None of these the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second the number of turns of wire in an inductor multiplied by the amount of current flowing through it ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding? None of these 20 A 0.20833333333333 50 A None of these 20 A 0.20833333333333 50 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which is the most widely used semiconductor? All of these Silicon None of these Germanium Copper All of these Silicon None of these Germanium Copper ANSWER DOWNLOAD EXAMIANS APP
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