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  • Question
  • Current chopping leads to


  • Options
  • A. over voltage
  • B. over current
  • C. both over voltage and over current
  • D. either over voltage or over current

  • Correct Answer
  • over voltage 

    Explanation
    e = L Current chopping leads to over voltage over current both over voltage and over current either over v. In current chopping Current chopping leads to over voltage over current both over voltage and over current either over v is high. Hence e is high.

    More questions

    • 1. 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
    • 2. 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
    • 3. Maximum efficiency of class B power amplifier is 50%.

    • Options
    • A. True
    • B. False
    • Discuss
    • 4. Which of the following commutation methods is the overall circuit under damped?

    • Options
    • A. Class A
    • B. Class B
    • C. Class C
    • D. Both class A and Class B
    • Discuss
    • 5. The primary constants of a transmission line are

    • Options
    • A. R and L
    • B. R, L and C
    • C. R and C
    • D. R, L, G and C
    • Discuss
    • 6. For the strip line in the given figure the capacitance per unit length =

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 7. In which mode of circular waveguide does the attenuation continuously decrease as frequency is increased?

    • Options
    • A. TE01
    • B. TE11
    • C. TE05
    • D. TE21
    • Discuss
    • 8. The beam of a radar should be

    • Options
    • A. very narrow
    • B. very wide
    • C. neither too narrow nor very wide
    • D. either (b) or (c)
    • Discuss
    • 9. If temperature is increased, the temperature coefficient of a metal

    • Options
    • A. increases
    • B. decreases
    • C. may increase or decrease
    • D. remains constant
    • Discuss
    • 10. In an homogeneous dielectric subjected to an electric field E, the dipole moment per unit volume is ?0(?r - 1) E.

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


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