Electronic Principles The current gain of a transistor is defined as the ratio of the collector current to the supply current None of these emitter current base current collector current supply current None of these emitter current base current collector current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following phrasers best describes flux density? The opposition to a build-up of magnetic fields None of these The force that maintains lines of force The concentration of lines of magnetic force The rate of change of the number of lines of magnetic force The opposition to a build-up of magnetic fields None of these The force that maintains lines of force The concentration of lines of magnetic force The rate of change of the number of lines of magnetic force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The direction of conventional current flow is: from neutral to positive from positive to negative from negative to positive from left to right None of these from neutral to positive from positive to negative from negative to positive from left to right None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The voltage across a 1N4001 is 0.93V when the current is 1A. What is the power dissipation of the diode for these values? 0.93 W 9.3 W 0.041666666666667 0.93 V None of these 0.93 W 9.3 W 0.041666666666667 0.93 V None of these 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? 7.8 mA 208 mA None of these 300 mA 200 mA 7.8 mA 208 mA None of these 300 mA 200 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The peak value of a sine waveform is: the maximum positive or negative value None of these the amplitude at 90% of the maximum value the amplitude at 70.7% of the maximum value the amplitude at 1.41 times the maximum value the maximum positive or negative value None of these the amplitude at 90% of the maximum value the amplitude at 70.7% of the maximum value the amplitude at 1.41 times the maximum value ANSWER DOWNLOAD EXAMIANS APP
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