Electronic Principles The transistor has a collector current of 10 mA and a base current of 40 mA. What is the current gain of the transistor? 300 µA None of these 250 µA 0.25 µA 350 µA 300 µA None of these 250 µA 0.25 µA 350 µA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract Like magnetic poles attract, while unlike poles repel Current is induced in a conductor that is moving through a magnetic field None of these Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract Like magnetic poles attract, while unlike poles repel Current is induced in a conductor that is moving through a magnetic field None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The number of free electrons and holes in intrinsic semiconductor increases when the temperature Decreases None of these 0oC Increases Stays the same Decreases None of these 0oC Increases Stays the same ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts thermal energy to electrical energy is called a: solar cell chemical cell None of these piezoelectric devices thermocouple solar cell chemical cell None of these piezoelectric devices thermocouple ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles In a step-down transformer, which is larger? Secondary voltage Impossible to say None of these Neither Primary voltage Secondary voltage Impossible to say None of these Neither Primary voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts mechanical pressure to electrical energy is called a: solar cell None of these nicad cell piezoelectric device photodiode solar cell None of these nicad cell piezoelectric device photodiode ANSWER DOWNLOAD EXAMIANS APP
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