Electronic Principles An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current? 34.4 mA None of these 68.4 mA 24.2 mA 28.4 mA 34.4 mA None of these 68.4 mA 24.2 mA 28.4 mA ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? Two - a negative terminal and a positive terminal Three - negative, positive and neutral terminals One - a negative terminal Four - two negative and two positive None of these Two - a negative terminal and a positive terminal Three - negative, positive and neutral terminals One - a negative terminal Four - two negative and two positive None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the number of turns of wire in an inductor: reduces the value of inductance by one-half multiplies the value of inductance by two None of these multiplies the value of inductance by four reduces the value of inductance by one-fourth reduces the value of inductance by one-half multiplies the value of inductance by two None of these multiplies the value of inductance by four reduces the value of inductance by one-fourth ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much current flows through a 0.02-H choke that is operating from a 12-V ac, 100-Hz source? 0.41666666666667 0.02 A 0.955 A 2.02 A None of these 0.41666666666667 0.02 A 0.955 A 2.02 A None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns? 1000 A 100 A 0.1 A None of these 0.41666666666667 1000 A 100 A 0.1 A None of these 0.41666666666667 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the turns ratio of a power transformer that shows 50 V at its secondary winding when you apply 150 V to its primary winding? 2 43891 3 None of these 43922 2 43891 3 None of these 43922 ANSWER DOWNLOAD EXAMIANS APP
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