Electronic Principles The transistor has a collector current of 2 mA. If the current gain is 135, what is the base current? 14.8 µA 10.3 µA 7.75 µA 7.8 µA None of these 14.8 µA 10.3 µA 7.75 µA 7.8 µA None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm? None of these 150 ohm 445 ohm 220 ohm 690 ohm None of these 150 ohm 445 ohm 220 ohm 690 ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the diameter of the coil in an inductor: multiplies the value of inductance by two None of these reduces the value of inductance by one-fourth reduces the value of inductance by one-half multiplies the value of inductance by four multiplies the value of inductance by two None of these reduces the value of inductance by one-fourth reduces the value of inductance by one-half multiplies the value of inductance by four 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 0.2 A 0.3 A 0.6 A 0.4 A None of these 0.2 A 0.3 A ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The value of a capacitor can be made larger by: increasing the frequency of the applied voltage None of these increasing the voltage applied to the plates decreasing the area of the plates increasing the area of the plates increasing the frequency of the applied voltage None of these increasing the voltage applied to the plates decreasing the area of the plates increasing the area of the plates ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is a negative ion? An atom that contains more electrons than neutrons An atom that contains more protons than neutrons An atom that contains more electrons than protons None of these An atom that contains more protons than electrons An atom that contains more electrons than neutrons An atom that contains more protons than neutrons An atom that contains more electrons than protons None of these An atom that contains more protons than electrons ANSWER DOWNLOAD EXAMIANS APP
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