Electronic Principles Which one of the following principles best describes the basic operation of a generator? Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field None of these Like magnetic poles attract; unlike poles repel Like magnetic poles repel; unlike poles attract Current flowing through a conductor generates a magnetic field Current is induced in a conductor that is moving through a magnetic field None of these Like magnetic poles attract; unlike poles repel Like magnetic poles repel; unlike poles attract ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Assuming 100% efficiency, what is the power being applied to the primary winding of the transformer described in the above question? 1000 W 100 W None of these 20 W 200 W 1000 W 100 W None of these 20 W 200 W ANSWER DOWNLOAD EXAMIANS APP
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? None of these 208 V 707 V 700 V 651 V None of these 208 V 707 V 700 V 651 V 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 reduces the value of inductance by one-fourth multiplies the value of inductance by four reduces the value of inductance by one-half multiplies the value of inductance by two None of these reduces the value of inductance by one-fourth multiplies the value of inductance by four ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A dielectric material is: a good conductor a good conductor of magnetic fields None of these a good insulator a poor conductor of electrostatic fields a good conductor a good conductor of magnetic fields None of these a good insulator a poor conductor of electrostatic fields ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A zener regulator has an input voltage from 15 to 20 V and a load current from 5 to 20 mA. If the zener voltage is 6.8 V, what value should the series resistor have? 410 Ohm 310 Ohm None of these 400 Ohm 550 Ohm 410 Ohm 310 Ohm None of these 400 Ohm 550 Ohm ANSWER DOWNLOAD EXAMIANS APP
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