Electronic Principles A device that converts mechanical pressure to electrical energy is called a: piezoelectric device solar cell None of these nicad cell photodiode piezoelectric device solar cell None of these nicad cell photodiode 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 One - a negative terminal Three - negative, positive and neutral terminals None of these Four - two negative and two positive Two - a negative terminal and a positive terminal One - a negative terminal Three - negative, positive and neutral terminals None of these Four - two negative and two positive ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Doubling the operating frequency of a purely capacitive circuit: thrice the amount of total current None of these cuts the total current by one-half doubles the amount of total current has no effect on the total circuit current thrice the amount of total current None of these cuts the total current by one-half doubles the amount of total current has no effect on the total circuit current 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? 88.8 ohm None of these 89.3 ohm 77.7 ohm 224 ohm 88.8 ohm None of these 89.3 ohm 77.7 ohm 224 ohm ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Current and voltage are said to be in phase when: All of these they have the same amplitude and frequency their waveforms cross through zero and reach positive and negative peaks at the same time None of these their waveforms are both ac or both dc All of these they have the same amplitude and frequency their waveforms cross through zero and reach positive and negative peaks at the same time None of these their waveforms are both ac or both dc ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The period of a waveform is: None of these the time required to complete one full cycle equal to 0.707 times the peak amplitude the time required for the voltage to rise from 10% to 90% of the peak amplitude the number of cycles completed in one second None of these the time required to complete one full cycle equal to 0.707 times the peak amplitude the time required for the voltage to rise from 10% to 90% of the peak amplitude the number of cycles completed in one second ANSWER DOWNLOAD EXAMIANS APP
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