Electronic Principles Which one of the following principles best describes the basic operation of an electromagnet? Current is induced in a conductor that is moving through a magnetic field Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract None of these Like magnetic poles attract, while unlike poles repel Current is induced in a conductor that is moving through a magnetic field Current flowing through a conductor generates a magnetic field Like magnetic poles repel, while unlike poles attract None of these Like magnetic poles attract, while unlike poles repel ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Suppose the peak value of a sinusoidal voltage is 50 V. What is the rms value? 30.4 V 37.4 V None of these 38.74 V 35.4 V 30.4 V 37.4 V None of these 38.74 V 35.4 V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements applies to common, non-rechargeable flashlight batteries? Common flashlight batteries are primary wet-cell batteries None of these Common flashlight batteries are primary dry-cell batteries Common flashlight batteries are secondary dry-cell batteries Common flashlight batteries are secondary wet-cell batteries Common flashlight batteries are primary wet-cell batteries None of these Common flashlight batteries are primary dry-cell batteries Common flashlight batteries are secondary dry-cell batteries Common flashlight batteries are secondary wet-cell batteries ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: doubles the amount of total current cuts the total current by one-half None of these has no effect on the total circuit current thrice the amount of total current doubles the amount of total current cuts the total current by one-half None of these has no effect on the total circuit current thrice the amount of total current ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles What is the barrier potential of a silicon diode at room temperature? 1 V 2 m V per degree Celsius 0.3V None of these 0.7V 1 V 2 m V per degree Celsius 0.3V None of these 0.7V ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Most AC power is obtained from: None of these generators batteries lightning oscillators None of these generators batteries lightning oscillators ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS