Electronic Principles What form of energy is used for creating static electricity? Solar energy None of these Light energy Chemical energy Mechanical energy Solar energy None of these Light energy Chemical energy Mechanical energy ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs? P = E2/R P = IE P = I2R None of these I = P/E P = E2/R P = IE P = I2R None of these I = P/E ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature 0oC Decreases Increases None of these Stays the same 0oC Decreases Increases None of these Stays the same ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A real voltage source has A large internal resistance A small internal resistance Infinite internal resistance None of these Zero internal resistance A large internal resistance A small internal resistance Infinite internal resistance None of these Zero internal resistance 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? Magnetomotive force None of these Flux density Reluctance Number of lines of force Magnetomotive force None of these Flux density Reluctance Number of lines of force ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf changing the polarity of the current in the coil changes the polarity of the magnetic field around the core the core is permitted to move freely within the coil None of these frequent changes in the direction of current through the coil causes heating effects in the core material an increase in current through the coil causes no further increase in the mmf changing the polarity of the current in the coil changes the polarity of the magnetic field around the core the core is permitted to move freely within the coil None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS