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  • Question

  • The coefficient of coupling between two coils is 0.45. The first coil has an inductance of 75 mH and the second coil has an inductance of 105 mH. What is the mutual inductance between the coils?


  • Options
  • A. 3.54 mH
  • B. 7.88 mH
  • C. 39.9 mH
  • D. 189.3 mH

  • Correct Answer
  • 39.9 mH 

    • More questions

    • 1. 

      In the given circuit, what will the voltage be across R3 25 µs after the switch is moved to position 2?


    • Options
    • A. 2.88 V
    • B. 5.9 V
    • C. 8.34 V
    • D. 14 V
      • Discuss
    • 2. 

      The reflected resistance is ___ as seen by the source in the given circu.


    • Options
    • A. 150 Ω
    • B. 300 Ω
    • C. 600 Ω
    • D. 2.4 kΩ
      • Discuss
    • 3. The unit designator for resistance value is the:

    • Options
    • A. ampere
    • B. ohm
    • C. volt
    • D. watt
      • Discuss
    • 4. A(n) ___ has a conductive channel only when it is biased properly.

    • Options
    • A. p-channel JFET
    • B. n-channel D-MOSFET
    • C. p-channel D-MOSFET
    • D. n-channel E-MOSFET
      • Discuss
    • 5. The difference between analog voltage represented by two adjacent digital codes, or the analog step size, is the:

    • Options
    • A. quantization
    • B. accuracy
    • C. resolution
    • D. monotonicity
      • Discuss
    • 6. A "U" shaped, opposite-polarity material built near a JFET-channel center is called the:

    • Options
    • A. gate
    • B. block
    • C. drain
    • D. heat sink
      • Discuss
    • 7. Which test equipment best allows a comparison between input and output signals?

    • Options
    • A. an oscilloscope
    • B. a logic probe
    • C. a spectrum analyzer
    • D. a multitrace oscilloscope
      • Discuss
    • 8. When multiplying in binary the decimal values 13 × 11, what is the third partial product?

    • Options
    • A. 100000
    • B. 100001
    • C. 0000
    • D. 1011
      • Discuss
    • 9. A voltage-follower op-amp has the output connected directly to the inverting input.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. 

      The average value of the output voltage from the circuit in the given circuit equals ___.


    • Options
    • A. 5.48 V
    • B. 2.74 V
    • C. 0 V
    • D. 6.37 V
      • Discuss

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