" Transformers and Circuits: 1- For the single-phase circuit with a pure resistive load, the maximum instantaneous power

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Transformers And Circuits 1 For The Single Phase Circuit With A Pure Resistive Load The Maximum Instantaneous Power 1 (141.69 KiB) Viewed 38 times

" Transformers and Circuits: 1- For the single-phase circuit with a pure resistive load, the maximum instantaneous power is a. double the average active power b. half of the average active power c. 0.707 of the average power b. none of the above 2- How long does it take to go from a zero voltage to the next consecutive zero voltage on a 50 Hz power line? a. 10 ms D. 5 ms c. 2.5 ms d. none of the above 3- The power factor has a direct relation with d. the active power taken by the load b. the reactive power taken by the load c. the instantaneous power taken by the load d. none of the above 4- The star connection of a balanced three-phase load has a. balanced three phase currents if the three phase voltages are equal and shifted by 120⁰ b. balanced three phase currents if the three phase voltages are unequal and not shifted by 120⁰ c. unbalanced three-phase currents if the three phase voltages are equal and shifted by 120⁰ d. none of the above 5- For delta connection of a balanced load, the total power can be measured by a. two-wattmeter method U. Tour-wattmeter method c. five-wattmeter only d. none of the above