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Home ‣ Electrical Engineering ‣ Three-Phase Systems in Power Applications See What Others Are Saying!
  • Question

  • In a Y-connected source feeding a △-connected load,


  • Options
  • A. each phase of the load has one-third of the full line voltage across it
  • B. each phase of the load has two-thirds of the full line voltage across it
  • C. each phase of the load has the full line voltage across it
  • D. each phase of the load has a voltage across it equal to In a Y-connected source feeding a ?-connected load, each phase of the load has one-third of the full

  • Correct Answer
  • each phase of the load has the full line voltage across it 

    • More questions

    • 1. A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is

    • Options
    • A. 24 Ω
    • B. 2.4 Ω
    • C. 300 Ω
    • D. 3,000 Ω
      • Discuss
    • 2. A certain voltage source has the values VS = 30 V and RS = 6 Ω. The values for an equivalent current source are

    • Options
    • A. 5 A, 6 Ω
    • B. 30 A, 6 Ω
    • C. 5 A, 30 Ω
    • D. 30 A, 5 Ω
      • Discuss
    • 3. Find the current in R2 of the given circuit, using the superposition theorem.


    • Options
    • A. 16.7 mA
    • B. 33.3 mA
    • C. 50 mA
    • D. 16.6 mA
      • Discuss
    • 4. Find the Thevenin equivalent (VTH and RTH) between terminals A and B of the circuit given below.


    • Options
    • A. 4.16 V, 120 Ω
    • B. 41.6 V, 120 Ω
    • C. 4.16 V, 70 Ω
    • D. 41.67 V, 70 Ω
      • Discuss
    • 5. The turns ratio required to match an 80 Ω source to a 320 Ω load is

    • Options
    • A. 80
    • B. 20
    • C. 4
    • D. 2
      • Discuss
    • 6. Which of the following power factors results in less energy loss in an RL circuit?

    • Options
    • A. 1
    • B. 0.8
    • C. 0.4
    • D. 0.2
      • Discuss
    • 7. A 3.3 kΩ resistor dissipates 0.25 W. The current is

    • Options
    • A. 8.7 mA
    • B. 87 mA
    • C. 8.7 µA
    • D. 8.7 A
      • Discuss
    • 8. A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are

    • Options
    • A. 2 V, 4 V
    • B. 2 V, 2 V
    • C. 2 V, 6 V
    • D. 4 V, 6 V
      • Discuss
    • 9. What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 µWb/At × m?

    • Options
    • A. 1111 At/Wb
    • B. 111 At/Wb
    • C. 11 At/Wb
    • D. 1 At/Wb
      • Discuss
    • 10. A 0.00022 F capacitor equals how many microfarads?

    • Options
    • A. 22 µF
    • B. 220 µF
    • C. 2,200 µF
    • D. 22,200 µF
      • Discuss

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