Quiz  /  Impedance MCQ

  • 1. 
    What is the value of input impedance of a quarter-wave line 50 ohm and the load impedance of 20 ohms?

  • 50
  • 20
  • 1000
  • 125

  • 2. 
    The value of input impedance for a matched line will be equal to

  • Load impedance
  • Characteristic impedance
  • Output impedance
  • Zero

  • 3. 
    What is the ratio of  characteristic impedance to the input impedance if the ratio of load voltage to the input voltage is given as 5

  • ⅕
  • 5
  • 10
  • 25

  • 4. 
    The maximum impedance of a transmission line 50 ohm and the standing wave ratio of 2.5 is

  • 20
  • 125
  • 200
  • 75

  • 5. 
    What is the normally chosen value of the characteristic impedance of a transmission line?

  • 50
  • 75
  • 50 or 75
  • 100

  • 6. 
    What is the value of negative sequence impedance?

  • 1
  • Z
  • Same as positive sequence
  • infinity

  • 7. 
    The standing wave ratio is 4 for a transmission line of 75 ohms. What is the value of the minimum impedance?

  • 75
  • 300
  • 18.75
  • 150

  • 8. 
    A transmission line has a voltage of 24 V and a conduction current of 1.2 A. What will its receiving impedance?

  • 25.2
  • 22.8
  • 28.8
  • 20

  • 9. 
    What is the value of the characteristic impedance of a transmission line with impedance and admittance of 16 and 9?

  • 25
  • 1.33
  • 0.75
  • 7

  • 10. 
    The propagation constant of a transmission line with impedance and admittance of 9 and 16, respectively is

  • 25
  • 144
  • 12
  • 7
Report Question
warning
access_time
  Time