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? 20 A 50 A None of these 0.20833333333333 20 A 50 A None of these 0.20833333333333 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The rms value of a sine waveform is: equal to 1.41 times the peak amplitude the time required to complete one full cycle None of these equal to 0.707 times the peak amplitude the number of cycles completed in one second equal to 1.41 times the peak amplitude the time required to complete one full cycle None of these equal to 0.707 times the peak amplitude the number of cycles completed in one second ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage? 30 V None of these 12 V 24 V 18 V 30 V None of these 12 V 24 V 18 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Most AC power is obtained from: generators batteries lightning None of these oscillators generators batteries lightning None of these oscillators ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm? 250 Ohm 70.7Ohm 99.3 Ohm None of these 60 Ohm 250 Ohm 70.7Ohm 99.3 Ohm None of these 60 Ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose a step-down transformer has a turns ration of 5:1. If the secondary current is 1A rms, what is the primary-current? 0.6 A 0.4 A None of these 0.3 A 0.2 A 0.6 A 0.4 A None of these 0.3 A 0.2 A ANSWER DOWNLOAD EXAMIANS APP
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