Electronic Principles The current gain of a transistor is defined as the ratio of the collector current to the emitter current supply current None of these base current collector current emitter current supply current None of these base current collector current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which is the most widely used semiconductor? None of these All of these Germanium Copper Silicon None of these All of these Germanium Copper Silicon 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? 0.20833333333333 None of these 50 A 20 A 0.20833333333333 None of these 50 A 20 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following devices is most often used for measuring opposition to current flow in a circuit? Voltmeter Ammeter Wattmeter Ohmmeter None of these Voltmeter Ammeter Wattmeter Ohmmeter None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current is None of these An imbalance of electrical charges The flow of charged particles through a material The number of free electrons in an atom The force that causes electrons to flow None of these An imbalance of electrical charges The flow of charged particles through a material The number of free electrons in an atom The force that causes electrons to flow ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: 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 changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf None of these 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 changing the polarity of the current in the coil changes the polarity of the magnetic field around the core an increase in current through the coil causes no further increase in the mmf None of these ANSWER DOWNLOAD EXAMIANS APP
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