Electronic Principles The rotating coil of wire in an electric motor is called the: armature loop commutator None of these brush armature loop commutator None of these brush ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the smallest number of polarities required for current flow? None of these Four - two negative and two positive Three - negative, positive and neutral terminals One - a negative terminal Two - a negative terminal and a positive terminal None of these Four - two negative and two positive Three - negative, positive and neutral terminals One - a negative terminal Two - a negative terminal and a positive terminal 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
Electronic Principles What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with an inductor that has a reactance of 200 W? 224 ohm 89.3 ohm 77.7 ohm 88.8 ohm None of these 224 ohm 89.3 ohm 77.7 ohm 88.8 ohm None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Reducing the amount of current through an inductor: has no effect on the inductance 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 has no effect on the inductance 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 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A battery is a device composed of one or more: chemical cells piezoeletric cells None of these solar cells voltage generators chemical cells piezoeletric cells None of these solar cells voltage generators ANSWER DOWNLOAD EXAMIANS APP
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