Electronic Principles The core of an electromagnet is said to be in saturation when: None of these 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 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 None of these 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 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 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A typical light switch in your home is a: momentary push button switch toggle switch None of these rotary switch knife switch momentary push button switch toggle switch None of these rotary switch knife switch ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements best describes magnetic hysteresis? None of these Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet None of these Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following is a statement of KirchhofFs voltage law? None of these The algebraic sum of voltages entering and leaving a point is equal to zero The algebraic sum of voltages in a loop is equal to zero The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it The total voltage in a parallel circuit is less than the value of the smallest voltage None of these The algebraic sum of voltages entering and leaving a point is equal to zero The algebraic sum of voltages in a loop is equal to zero The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it The total voltage in a parallel circuit is less than the value of the smallest voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Molecule is None of these The smallest particle of a substance that retains the properties of that substance A atom that flows whenever there is an imbalance of electrical charges between two points A atom that has an excessive number of electrons in its outer orbit A atom that has a shortage of electrons in its outer orbit None of these The smallest particle of a substance that retains the properties of that substance A atom that flows whenever there is an imbalance of electrical charges between two points A atom that has an excessive number of electrons in its outer orbit A atom that has a shortage of electrons in its outer orbit ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What kind of device is a diode? Bilateral Nonlinear Linear Unipolar None of these Bilateral Nonlinear Linear Unipolar None of these ANSWER DOWNLOAD EXAMIANS APP
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