EE8552 - Power Electronics - Unit-3 Two marks

Subject Name: Power Electronics

Subject Code: EE8552

B.E. EEE/Mechatronics Dept - semester 05

Anna University Regulation 2017 B.E. EEE/Mechatronics Dept 5th semester EE8552(Power Electronics) 2 marks for 3rd unit is provided below. EE8552 all units 2 marks, Power Electronics all units notes & syllabus are listed down for students to utilize it for scoring maximum marks with our study materials.

1.What are the control strategies of chopper ? (or) What are the methods of controlling the output voltage of a chopper ?

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2.Mention the disadvantages of FM scheme used in choppers. (or) What is the disadvantage of frequency modulated chopper ?

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3.What are the advantages and disadvantages of buck/boost regulator ?

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4.Define the term duty cycle of DC choppers. (or) Define the term duty cycle in DC-DC converters.

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5.What is meant by time ratio control in dc-dc converters ? (or) What is meant by pulse width modulation control in dc chopper ? (or) What is time ratio control in chopper ?

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6.What is meant by buck regulator ?

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7.What is a DC chopper ?

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8.Write any two salient features of CUK converter.

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9.What is cuk converter.

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10.What is meant by SMPS ? Mention its two advantages.

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11.What are the advantages of ZVS when compared to ZCS ?

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12.What is the principle of current limit control for chopper ?

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13.What are advantages of SMPS over phase controlled rectifiers?

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14.Give the uses of resonant switching. (or) What are the advantages of resonant switching converter ?

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15.Make a comparison between PWM and FM.

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16.Mention any two advantages of chopper fed DC drives.

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17.Brief up the working of four quadrant DC chopper.

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18.What is constant frequency control of chopper ?

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19.What is the need for resonant converter ?

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20.What are the advantages and disadvantages of Cuk converter?

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21.Distinguish between time ratio control and current limit control employed in DC chopper.

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22.What is meant by PWM control in DC chopper ?

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23.What is meant by resonant converter ?

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24.What is the effect of load inductance on the load current waveforms in the case of DC chopper ?

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25.What are the advantages and disadvantages of a resonant pulse chopper ?

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26.What are the classifications of dc to dc converters depending upon the directions of current and voltage ?

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27.Give the applications of SMPS.

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28.Write applications of DC chopper.

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