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  • Question
  • In figure, thyristor Th is in off state. When thyristor is turned on, the peak thyristor current can be
    In figure, thyristor Th is in off state. When thyristor is turned on, the peak thyristor current can


  • Options
  • A. 5 A
  • B. 10 A
  • C. 15 A
  • D. 20 A

  • Correct Answer
  • 15 A 


  • More questions

    • 1. The total number of leads in reverse conducting thyristor is

    • Options
    • A. 2
    • B. 3
    • C. 1
    • D. 4
    • Discuss
    • 2. Even at room temperature, an intrinsic semiconductor has some holes. These holes are due to

    • Options
    • A. electron
    • B. doping
    • C. thermal energy
    • D. free electrons
    • Discuss
    • 3. Assertion (A): Inter-digitated geometry is widely used for microwave transistors.

      Reason (R): Tuning at input and output of transistor uses MOS chip capacitors.


    • Options
    • A. Both A and R are correct and R is correct explanation of A
    • B. Both A and R are correct but R is not correct explanation of A
    • C. A is correct but R is wrong
    • D. A is wrong but R is correct
    • Discuss
    • 4. A waveguide twist is used to change the plane of polarization.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. Rochelle salt is a ferroelectric material.

    • Options
    • A. True
    • B. False
    • Discuss
    • 6. A line has Z0 = 300 ? 0° ?. If ZL = 150 ? 0° ?, reflection coefficient is

    • Options
    • A. 0.5
    • B. 0.3333
    • C. -0.3333
    • D. -0.5
    • Discuss
    • 7. The number of valence electrons in trivalent impurity is

    • Options
    • A. 5
    • B. 4
    • C. 3
    • D. 1
    • Discuss
    • 8. In a single phase full wave ac regulator using two thyristors only, the gate circuits of the two thyristors

    • Options
    • A. must be isolated
    • B. may or may not be isolated
    • C. should be preferably, isolated
    • D. should not be isolated
    • Discuss
    • 9. In a ripple counter,

    • Options
    • A. whenever a flip flop sets to 1, the next higher FF toggles
    • B. whenever a flip flop sets to 0, the next higher FF remains unchanged
    • C. whenever a flip flop sets to 1, the next higher FF faces race condition
    • D. whenever a flip flop sets to 0, the next higher FF faces race condition
    • Discuss
    • 10. Maximum efficiency of class B power amplifier is 50%.

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


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