Cycloconverter Question & Answers October 27, 2022 By WatElectronics This article lists 50 Cycloconverter MCQs for engineering students. All the Cycloconverter Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of cycloconverter. The cyclo converters are used to control the speed of an alternating current machine such as cement mill drives, synchronous motors, ship propulsion, rolling mill drives, ore grinding mills, etc. The three phases to three phases, single phase to single phase, single phase to three phases, and DC link cycloconverter with parallel resonant circuits are the types of cyclo converters. The limitations of cyclo converters are a large number of thyristors are required, and the output frequency is limited to one-third of the input frequency. The advantages of cyclo converters are extremely attractive for large power, low-speed drives, and no intermediate DC state is required for AC-AC conversion. The disadvantages of cyclo converters are input power factor is poor, the control circuit is difficult, and more distortion at low frequencies is not possible. The blocking mode and circulating current mode are the modes of cycloconverter. An intergroup reactor is needed in circulating current mode. The midpoint configuration and bridge configuration come under a single-phase cycloconverter, and the circulating and non-circulating type comes under a three-phase cycloconverter. The speed control of alternating current motors, motion control of the alternating current motor, HVDT, aircraft power supply, mobile power supply, etc are the applications of cycloconverter. 1). What are the advantages of cycloconverters? Creates in any power factor Power transfer in either direction Both a and b None of the above None Hint 2). What is the standard form of IGR? Intergroup Reactor Interchange Reactor Internal Reactor None of the above None Hint 3). The modes of operation of dual converter are categorized into ___________________ types? Two Three Four Five None Hint 4). The step-down cycloconverters are categorized into ______________ types? One Two Three Four None Hint 5). What is the standard form of VSCF? Variable-Speed Constant Frequency Variable-Simple Constant Frequency Variable-Speed Control Frequency None of the above None Hint 6). In which one of the following, the AC filters are large? Cycloconverters Matrix converter Back-to-back VSC None of the above None Hint 7). The frequency response of cycloconverter is from _______________? DC capacitor Wind farm Both a and b None of the above None Hint 8). The weighted total harmonic distortion of standard cycloconverter in CCM operating mode is ___________________? 2.18 % 0.82 % 4.34 % 0.73 % None Hint 9). The figure shown below is a block diagram of __________________? Current source inverter Current source converter Cycloconverter None of the above None Hint 10). What are the disadvantages of cycloconverter? Power factor is low Power transfer in either direction Both a and b None of the above None Hint 11). The dual cycloconverters are categorized into ________________ types? Two Three Four Five None Hint 12). Which one of the following requires strong grid? Matrix converter Back-to-back VSC Cycloconverters None of the above None Hint 13). Which one of the following is a type of boost converter? Step-up chopper Stepdown chopper Step-up/down chopper None of the above None Hint 14). What is the standard form of CCM? Circulating Current Mode Circulating Control Mode Circulating Common Mode None of the above None Hint 15). The displacement power factor of standard cycloconverter is ______________ in CCM? 0.395 0.309 Both a and b None of the above None Hint 16). What is the standard form of SPMC? Single Phase Minimum Converter Single Phase Multiple Converter Single Phase Matrix Converter None of the above None Hint 17). The bridge type cycloconverter is a type of _____________________ converter? Low to high frequency High frequency High to low frequency None of the above None Hint 18). The figure shown below is a block diagram of __________________? Current source inverter Single phase cycloconverter Three phase cycloconverter None of the above None Hint 19). Which one of the following cycloconverter is also known as six pulse cycloconverter? 3ф-3ф half-wave cycloconverter 3ф-3ф bridge cycloconverter 1ф-1ф half-wave cycloconverter None of the above None Hint 20). The cycloconverter according to the mode of operations are categorized into _______________ types? Three Two Four Five None Hint Cycloconverter MCQ for Quiz 21). The weighted total harmonic distortion of hybrid cycloconverter in CCFM operating mode is ___________________? 2.18 % 0.82 % 4.34 % 0.73 % None Hint 22). The high-power drives categorized into _____________ types? One Two Three Four None Hint 23). The three phases to single phase cycloconverters are categorized into ___________________ types? One Two Three Four None Hint 24). Which one of the following cycloconverter is also known as 18-thyristor cycloconverter? 3ф-3ф half-wave cycloconverter 1ф-3ф half-wave cycloconverter 1ф-1ф half-wave cycloconverter None of the above None Hint 25). The single phase to three phase cycloconverters is categorized into __________________ types? Three Two Four Five None Hint 26). What is the standard form of SPIMD? Single Phase Induction Motor Drives Single Phase Internal Motor Drives Single Phase Inductor Motor Drives None of the above None Hint 27). In which one of the following cycloconverter the DC link capacitor is not used? Non-conventional Conventional Both a and b None of the above None Hint Read more about Capacitors 28). The figure shown below is a circuit diagram of __________________? Three pulse cycloconverter Six pulse cycloconverter Twelve pulse cycloconverter None of the above None Hint 29). What is the standard form of NPCC? Neutral-Point-Clamped Controller Neutral-Point-Control Converter Neutral-Point-Clamped Converter None of the above None Hint 30). The mid-point configuration comes under ________________ phase cycloconverter? Single Three Both a and b None of the above None Hint 31). Which one of the following is a type of buck-boost converter? Step-up chopper Stepdown chopper Step-up/down chopper None of the above None Hint 32). The weighted total harmonic distortion of standard cycloconverter in CCFM operating mode is ___________________? 2.18 % 0.82 % 4.34 % 0.73 % None Hint 33). The displacement power factor of hybrid cycloconverter is ______________ in CCFM? 0.395 0.309 0.490 0.502 None Hint 34). In ________________ cycloconverters, the output frequency is less than supply frequency? Step-up Step-down Both a and b None of the above None Hint 35). In which one of the following cycloconverter, the performance is poor? Non-conventional Conventional Both a and b None of the above None Hint 36). What is the standard form of CSI? Controller Source Inverter Current Source Inductor Current Source Immolator None of the above None Hint 37). The mid-point cycloconverter is a type of _____________________ converter? Low to high frequency High frequency High to low frequency None of the above None Hint 38). The back-to-back connected converters categorized into __________________ types? One Two Three Four None Hint 39). The figure shown below is a waveform of __________________? Three pulse cycloconverter Blocked mode cycloconverter Twelve pulse cycloconverter None of the above None Hint 40). What are the applications of cycloconverter? Cement mill drives Synchronous motor Ship propulsion All of the above None Hint Cycloconverter MCQ for Exams 41). Which one of the following is a type of buck converter? Step-up chopper Stepdown chopper Step-up/down chopper None of the above None Hint 42). The weighted total harmonic distortion of hybrid cycloconverter in CCM operating mode is ___________________? 2.18 % 0.82 % 4.34 % 0.73 % None Hint 43). The displacement power factor of hybrid cycloconverter is ______________ in CCM? 0.395 0.309 0.490 0.502 None Hint 44). What is the standard form of CSC? Controller Source Converter Current Source Converter Current Source Controller None of the above None Hint 45). The cycloconverters are categorized into _____________ types? Three Two Four Five None Hint 46). The figure shown below is a waveform of __________________? Circulating current cycloconverter Blocked mode cycloconverter Twelve pulse cycloconverter None of the above None Hint 47). In which one of the following cycloconverter, the efficiency is low? Non-conventional Conventional Both a and b None of the above None Hint 48). In ________________ cycloconverters the output frequency is less than supply frequency? Step-up Step-down Both a and b None of the above None Hint 49). The displacement power factor of standard cycloconverter is ______________ in CCFM? 0.395 0.309 0.490 0.502 None Hint 50). What is the standard form of CCFM? Circulating Current Free Mode Circulating Control Free Mode Circulating Common Free Mode None of the above None Hint Please fill in the comment box below. Time's up
