Single Phase Semi-Converters-2 MCQ

Test your knowledge with important Single Phase Semi-Converters-2 MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Single Phase Semi-Converters-2 MCQs on Bissoy. Bissoy App

• For the same triggering angle and ratings
  ক

  a semi-converter operates at lower output voltage than a full converter

  খ

  a semi-converter operates at higher output voltage than a full converter

  গ

  a semi-converter has lower values of input p.f as compared to a full converter

  ঘ

  a semi-converter has more THD as compared to a full converter
• A single-phase semi-converter circuit is supplying power to a motor load. The average value of load voltage is 176.72 V and the rms value is 219.3 V. Find the VRF (voltage ripple factor).
  ক

  0

  খ

  0.735

  গ

  0.569

  ঘ

  2.48
• A single-phase semi-converter is connected to a 230 V source and is feeding a load R = 10 Ω in series with a large inductance that makes the load current ripple free. For α = 45°, find the rectification efficiency. The RMS value of output voltage is 219.3 V
  ক

  96.54 %

  খ

  75.25 %

  গ

  89.45 %

  ঘ

  80.58 %
• A single-phase semi-converter is connected to a 230 V source and is feeding a load R = 10 Ω in series with a large inductance that makes the load current ripple free. Find the average output current for α = 45°.
  ক

  14 A

  খ

  17 A

  গ

  10 A

  ঘ

  0 A
• In any AC-DC circuit, the freewheeling action
  ক

  improves the power handling capabilities

  খ

  increases the THD

  গ

  improves CDF

  ঘ

  all of the mentioned
• For the circuit shown below, T1 and T2 (from top T1 and T2) are both fired at an angle α. Then from ωt = π to ωt = π+α
  ক

  None of the devices conduct

  খ

  T1 and one diode will conduct

  গ

  T2 and one diode will conduct

  ঘ

  Both the diodes will conduct
• In the below given circuit, from ωt = π to α+π and continuous load current configuration
  ক

  T1 and T2 conduct

  খ

  T2 and D1 conduct

  গ

  T1 and D2 conduct

  ঘ

  T1 and D1 conduct
• A single-phase asymmetrical semi-converter employs
  ক

  one SCR and one diode in each leg

  খ

  two SCRs in one leg and two diodes in the other

  গ

  two SCRs in both the legs

  ঘ

  two diodes in both the legs
• A single-phase symmetrical semi-converter employs
  ক

  one SCR and one diode in each leg

  খ

  two SCRs and two diodes in each leg

  গ

  two SCRs in each leg

  ঘ

  two diodes in each leg