Electronic Principles An audio transformer has a turn ratio of 9, What is its impedance ratio? 9 6 81 85 None of these 9 6 81 85 None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What causes the depletion layer? Recombination Barrier potential None of these Doping Ions Recombination Barrier potential None of these Doping Ions 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 50 A 20 A 0.20833333333333 None of these 50 A 20 A 0.20833333333333 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? None of these Two - a negative terminal and a positive terminal One - a negative terminal Three - negative, positive and neutral terminals Four - two negative and two positive None of these Two - a negative terminal and a positive terminal One - a negative terminal Three - negative, positive and neutral terminals Four - two negative and two positive ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles At room temperature an intrinsic silicon crystal acts approximately like an insulator a battery a piece of copper wire None of these a conductor an insulator a battery a piece of copper wire None of these a conductor ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a capacitive circuit: multiplies the capacitive reactance by 6.28 cuts the capacitive reactance in half doubles the amount of a capacitive reactance has no effect on the capacitive reactance None of these multiplies the capacitive reactance by 6.28 cuts the capacitive reactance in half doubles the amount of a capacitive reactance has no effect on the capacitive reactance None of these ANSWER DOWNLOAD EXAMIANS APP
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