Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? 208 V None of these 651 V 700 V 707 V 208 V None of these 651 V 700 V 707 V 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? Number of lines of force Magnetomotive force Reluctance Flux density None of these Number of lines of force Magnetomotive force Reluctance Flux density None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic silicon crystal acts approximately like an insulator a piece of copper wire None of these a battery a conductor an insulator a piece of copper wire None of these a battery a conductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What form of energy is used to maintain an imbalance of charges between the terminals of a battery? Electronical energy Solar energy Mechanical energy Chemical energy None of these Electronical energy Solar energy Mechanical energy Chemical energy None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of. the following phrases most accurately describes the nature of a pulsating dc voltage? The voltage remains at one polarity but changes value periodically The voltage causes current to flow in two directions at the same time The voltage remains at one polarity and at a steady level The voltage reverses polarity periodically None of these The voltage remains at one polarity but changes value periodically The voltage causes current to flow in two directions at the same time The voltage remains at one polarity and at a steady level The voltage reverses polarity periodically None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In an intrinsic semiconductor, the number of free electrons Is greater than the number of holes Equals the number of holes Impossible to say Is less than the number of holes None of these Is greater than the number of holes Equals the number of holes Impossible to say Is less than the number of holes None of these ANSWER DOWNLOAD EXAMIANS APP
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