Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 9 81 None of these 6 85 9 81 None of these 6 85 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? 50 A 0.20833333333333 None of these 20 A 50 A 0.20833333333333 None of these 20 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 550 Ohm 400 Ohm 410 Ohm None of these 310 Ohm 550 Ohm 400 Ohm 410 Ohm None of these 310 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rms value of a sine waveform is: None of these the number of cycles completed in one second the time required to complete one full cycle equal to 0.707 times the peak amplitude equal to 1.41 times the peak amplitude None of these the number of cycles completed in one second the time required to complete one full cycle equal to 0.707 times the peak amplitude equal to 1.41 times the peak amplitude ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The knee voltage of a diode is approximately equal to the Forward voltage None of these Breakdown voltage Barrier potential Applied voltage Forward voltage None of these Breakdown voltage Barrier potential Applied voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following properties of a magnetic circuit can be directly compared to voltage in an electrical circuit? Reluctance None of these Flux density Magnetomotive force Number of lines of force Reluctance None of these Flux density Magnetomotive force Number of lines of force ANSWER DOWNLOAD EXAMIANS APP
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