Electronic Principles A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage? 700 V 208 V 651 V None of these 707 V 700 V 208 V 651 V None of these 707 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The total impedance of a parallel RLC circuit: is maximum at the resonant frequency always increases as the applied frequency increases None of these is equal to the sum of the values of resistance, inductive reactance and capacitive reactance always decreases as the applied frequency increases is maximum at the resonant frequency always increases as the applied frequency increases None of these is equal to the sum of the values of resistance, inductive reactance and capacitive reactance always decreases as the applied frequency increases ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles If a load resistance is 1 kW, a stiff voltage source has a resistance of At least 10 Ohm less than 10 Ohm More than 100 k Ohm Less than 100 k Ohm None of these At least 10 Ohm less than 10 Ohm More than 100 k Ohm Less than 100 k Ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The peak value of a sine waveform is: the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value the amplitude at 1.41 times the maximum value None of these the maximum positive or negative value the amplitude at 70.7% of the maximum value the amplitude at 90% of the maximum value the amplitude at 1.41 times the maximum value None of these the maximum positive or negative value ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs? I = P/E P = I2R P = E2/R P = IE None of these I = P/E P = I2R P = E2/R P = IE None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 0.02 micro F capacitor that is operating from a 12-V ac, 100-Hz source? 0.995 mA 157 raA 0.151 mA None of these 2.02 A 0.995 mA 157 raA 0.151 mA None of these 2.02 A ANSWER DOWNLOAD EXAMIANS APP
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