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Home ‣ Electronics and Communication Engineering ‣ Power Electronics See What Others Are Saying!
  • Question

  • In the basic series inverter circuit, the source supplies load


  • Options
  • A. only in positive half cycle
  • B. both in positive and negative half cycles
  • C. only in part of positive half cycle
  • D. in positive half cycle and part of negative half cycle

  • Correct Answer
  • only in positive half cycle 

    • More questions

    • 1. A disadvantage of microstrip line as the connections of compared to strip line is that former

    • Options
    • A. do not lend themselves to printed circuit
    • B. are more likely to radiate
    • C. are bulky
    • D. are more expensive and complex
      • Discuss
    • 2. A heterodyne frequency changer is called a

    • Options
    • A. Modulator
    • B. Mixer
    • C. Demodulator
    • D. Frequency translator
      • Discuss
    • 3. In a line with finite attenuation

    • Options
    • A. power transmission is least efficient when there are no standing waves on the line
    • B. power transmission is most efficient when there are no standing waves on line
    • C. Load power depends on phase constant
    • D. standing waves will always exist on the line
      • Discuss
    • 4. The circuit in the given figure is

    • Options
    • A. positive logic OR gate
    • B. negative logic OR gate
    • C. negative logic AND gate
    • D. positive logic AND gate
      • Discuss
    • 5. Match the following:

      List I List II
      A. Ternary 1. 0, 1, 3
      B. Quaternary 2. 0, 1, 2, 3, 4, 5, 6 7, 8, 9, A, B
      C. Quinary 3. 0, 1, 2, 3, 4
      D. Duodecimal 4. 0, 1, 2


    • Options
    • A. A-1, B-2, C-3, D-4
    • B. A-2, B-3, C-4, D-1
    • C. A-3, B-1, C-4, D-3
    • D. A-4, B-1, C-3, D-2
      • Discuss
    • 6. Assertion (A): Dielectric losses are proportional to tan ?.

      Reason (R): tan ? = where ?r' and ?r" denote the real and imaginary parts of ?r.


    • Options
    • A. Both A and R are true and R is correct explanation of A
    • B. Both A and R are true but R is not correct explanation of A
    • C. A is true but R is false
    • D. A is false but R is true
      • Discuss
    • 7. Match the following:

      List I List II
      A. Multiplexer 1. Sequential memory
      B. De-multiplexer 2. Converts decimal number to binary
      C. Shift register 3. Data selector
      D. Encoder 4. Routes single input to many outputs


    • Options
    • A. A-3, B-4, C-1, D-2
    • B. A-4, B-3, C-1, D-2
    • C. A-3, B-4, C-2, D-1
    • D. A-1, B-2, C-3, D-4
      • Discuss
    • 8. The width of a radio beam from a 1 m diameter parabolic antenna at 1 GHz is about

    • Options
    • A. 100°
    • B. 50°
    • C. 5°
    • D. 2°
      • Discuss
    • 9. If a line is open circuited Zin = Z0 tanh (gl).

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. A 'rat race' is a

    • Options
    • A. hybrid junction for microwaves
    • B. a microwave oscillator
    • C. a microwave amplifier
    • D. a microwave antenna
      • Discuss

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