Electronic Principles Suppose the peak value of a sinusoidal voltage is 50 V. What is the rms value? None of these 37.4 V 38.74 V 30.4 V 35.4 V None of these 37.4 V 38.74 V 30.4 V 35.4 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The core of an electromagnet is said to be in saturation when: None of these 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 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 None of these 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 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 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At cut off, the Q point is at lower end of the load line infinity None of these middle of the load line upper end of the load line lower end of the load line infinity None of these middle of the load line upper end of the load line ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current can flow through a normally open push button switch as long as: you are not pressing the button you are pressing the button its contact remain open None of these its contact remain open you are not pressing the button you are pressing the button its contact remain open None of these its contact remain open ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The primary impedance of a transformer is 60 ohm and the secondary impedance is 120 ohm. What is the impedance ratio? 180 0.5 None of these 4 0.25 180 0.5 None of these 4 0.25 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Inductive reactance is measured in units of: amperes per second henrys volts per second None of these Ohm amperes per second henrys volts per second None of these Ohm ANSWER DOWNLOAD EXAMIANS APP
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