Home » Electrical Engineering Basic Online Test » 40 TOP ELECTRICAL ENGINEERING Basic Online Test – Multiple Choice Questions and Answers 40 TOP ELECTRICAL ENGINEERING Basic Online Test – Multiple Choice Questions and Answers Posted on March 29, 2017March 30, 2017 by engineer6 Comments 1. If a load is purely inductive and the reactive power is 12 VAR, the apparent power is 0 VA 6 VA 8 VA 12 VA 2. In a parallel RL circuit, there are 3 A rms in the resistive branch and 3 A rms in the inductive branch. The total rms current is 42.4 A 6 A 424 A 4.24 A 3. In a balanced three-phase load, each phase has one-third of total power two-thirds of total power an equal amount of power none of these 4. Polyphase generators produce simultaneous multiple sinusoidal voltages that are separated by certain constant frequencies certain constant phase angles certain constant currents certain constant voltages 5. To increase the current in a series RL circuit, the frequency should be decreased should be increased should be constant cannot be determined without values 6. With an RL integrator, at the instant of the rising pulse edge, all the input voltage is across the inductor 63 percent of the input voltage is across the resistor all the input voltage is across the resistor 63 percent of the input voltage is across the inductor 7. Referring to Problem 3, the total copper cross section must handle 2.66 A 26.6 mA 1.33 A 266 mA 8. When the frequency is decreased, the impedance of a parallel RL circuit increases remains constant is not a factor decreases 9. The most common type of ac motor is the single-phase induction motor two-phase induction motor three-phase induction motor two-phase squirrel-cage motor 10. Which of the following power factors results in less energy loss in an RL circuit? 0.2 2 0.4 0.8 Loading … Question 1 of 10

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