Electronic Principles Which one of the following devices is most often used for measuring electrical potential difference? Ammeter None of these Voltmeter Ohmmeter Wattmeter Ammeter None of these Voltmeter Ohmmeter Wattmeter ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: 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 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: their waveforms cross through zero and reach positive and negative peaks at the same time All of these None of these their waveforms are both ac or both dc they have the same amplitude and frequency their waveforms cross through zero and reach positive and negative peaks at the same time All of these None of these their waveforms are both ac or both dc they have the same amplitude and frequency ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A typical light switch in your home is a: momentary push button switch toggle switch knife switch rotary switch None of these momentary push button switch toggle switch knife switch rotary switch None of these 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? None of these 0.20833333333333 20 A 50 A None of these 0.20833333333333 20 A 50 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At cut off, the Q point is at middle of the load line None of these upper end of the load line lower end of the load line infinity middle of the load line None of these upper end of the load line lower end of the load line infinity ANSWER DOWNLOAD EXAMIANS APP
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