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  • Question

  • The dynamic equalising circuit consists of a series combination of capacitor C and resistor RC across each thyristor. This resistance RC (along with parallel connected diode)


  • Options
  • A. limits charging current
  • B. limits discharging current
  • C. limits both charging and discharging currents
  • D. none of the above

  • Correct Answer
  • limits discharging current 

    Explanation
    Discharge current flows through Re .

    More questions

    • 1. Radar reciever has high sensitivity and low noise figure

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. A single phase electric heater uses phase controlled thyristors. The firing angle is 90°. The degree of heating is

    • Options
    • A. 25% of maximum
    • B. 50% of maximum
    • C. 75% of maximum
    • D. none of the above
      • Discuss
    • 3. A characteristic property of crystal is its periodicity of structure.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. The number of distinct Boolean expression of 4 variables is

    • Options
    • A. 16
    • B. 256
    • C. 1024
    • D. 65536
      • Discuss
    • 5. Assertion (A): A class C chopper can operate in first and second quadrants

      Reason (R): A class B chopper operates only in second quadrant.


    • Options
    • A. Both A and R are correct and R is correct explanation of A
    • B. Both A and R 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
    • 6. In a conductor the current flow is due to

    • Options
    • A. holes
    • B. electrons
    • C. ions
    • D. electrons and ions
      • Discuss
    • 7. Which of these commutation methods uses two leads?

    • Options
    • A. Class A
    • B. Class B
    • C. Class C
    • D. Class D
      • Discuss
    • 8. The ROC of sequence in the Z.T. of sequence x[n] = an ? [n] is

    • Options
    • A. z > a
    • B. z < a
    • C. |z| > a
    • D. |z| < a
      • Discuss
    • 9. By inserting a plate of dielectric between the plates of a parallel plate capacitor, the energy stored in the capacitor is increased five times. The dielectric constant of material is

    • Options
    • A.
    • B.
    • C. 5
    • D. 25
      • Discuss
    • 10. An RLC series circuit is underdamped. To make it overdamped, the value of R

    • Options
    • A. has to be increased
    • B. has to be decreased
    • C. has to be increased to infinity
    • D. has to be reduced to zero
      • Discuss

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