Electronic Principles Current and voltage are said to be in phase when: None of these they have the same amplitude and frequency All of these their waveforms cross through zero and reach positive and negative peaks at the same time their waveforms are both ac or both dc None of these they have the same amplitude and frequency All of these their waveforms cross through zero and reach positive and negative peaks at the same time their waveforms are both ac or both dc ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current is The number of free electrons in an atom An imbalance of electrical charges The force that causes electrons to flow The flow of charged particles through a material None of these The number of free electrons in an atom An imbalance of electrical charges The force that causes electrons to flow The flow of charged particles through a material None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the phase shift between total current and voltage in the circuit of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm 180 degree None of these 30 degree 45 degree 75 degree 180 degree None of these 30 degree 45 degree 75 degree ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A device that converts thermal energy to electrical energy is called a: solar cell None of these piezoelectric devices thermocouple chemical cell solar cell None of these piezoelectric devices thermocouple chemical cell ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is a negative ion? None of these An atom that contains more protons than neutrons An atom that contains more protons than electrons An atom that contains more electrons than neutrons An atom that contains more electrons than protons None of these An atom that contains more protons than neutrons An atom that contains more protons than electrons An atom that contains more electrons than neutrons An atom that contains more electrons than protons ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements best describes magnetic hysteresis? Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet None of these Hysteresis is the amount of magnetic flux that is not confined to the core material of an electromagnet Hysteresis is most apparent when the current through the coil of an electromagnet changes frequently Hysteresis is most apparent when the core material is saturated Hysteresis is most apparent when a steady amount of current is lowing through the coil of an electromagnet None of these ANSWER DOWNLOAD EXAMIANS APP
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