Electronic Principles Current and voltage are said to be in phase when: 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 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 ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles How much power is being dissipated by a 1000 W resistance that has 25 V applied to it? 0.625 W 80 W 325 kW 0.24 W None of these 0.625 W 80 W 325 kW 0.24 W None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs? P = E2/R P = IE I = P/E None of these P = I2R P = E2/R P = IE I = P/E None of these P = I2R ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles The equivalent of 1 megohms is: one-millionth of an ohm 1 k ohm 100,000 ohm one million ohms None of these one-millionth of an ohm 1 k ohm 100,000 ohm one million ohms None of these ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles Which one of the following statements is true for resistance in a parallel circuit? The total resistance is equal to the sum of the individual resistances in a parallel circuit. None of these The total resistance in a parallel circuit is equal to the average value of the individual resistances The total resistance of a parallel circuit is always less than the value of the smallest resistance The total resistance of a parallel circuit is equal to the total voltage The total resistance is equal to the sum of the individual resistances in a parallel circuit. None of these The total resistance in a parallel circuit is equal to the average value of the individual resistances The total resistance of a parallel circuit is always less than the value of the smallest resistance The total resistance of a parallel circuit is equal to the total voltage ANSWER DOWNLOAD EXAMIANS APP
Electronic Principles A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns? 0.1 A 1000 A 0.41666666666667 None of these 100 A 0.1 A 1000 A 0.41666666666667 None of these 100 A ANSWER DOWNLOAD EXAMIANS APP
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