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    MCQs: The disadvantages of scherbius system used for speed controlling in 3 phase induction motor is - (A) It cannot be used for slip ring induction motors - (B) It cannot be used for squirrel cage induction motors

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    The disadvantages of scherbius system used for speed controlling in 3 phase induction motor is

    A. It cannot be used for slip ring induction motors

    B. It cannot be used for squirrel cage induction motors

    C. It can be used for large induction motors

    D. None of these

    Answer & Explanation

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    The disadvantages of scherbius system used for speed controlling in 3 phase induction motor is

    MCQs: The disadvantages of scherbius system used for speed controlling in 3 phase induction motor is - Electrical Engineering Questions - Electrical Machines Test Questions

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    Q.  The disadvantages of scherbius system used for speed controlling in 3 phase induction motor isa. It cannot be used for slip ring induction motorsb. It cannot be used for squirrel cage induction motorsc. It can be used for large induction motorsd. None of these

    See Answer

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    20 What are the advantages and disadvantages of Static Scherbius scheme of speed

    20 What are the advantages and disadvantages of Static Scherbius scheme of speed from EE 1205 at Indian Institute of Technology, Chennai

    KINGS COLLEGE OF ENGINEERING DEPARTMENT OF MECHANICAL...

    DOC PREVIEW Pages 8 Total views 100+

    Indian Institute of Technology, Chennai

    EE 1205 bibimohanan 05/26/2015

    20. What are the advantages and disadvantages of Static Scherbiusscheme of speed control?21. Write the speed equation of an induction motor.22. What is VVVF control?PART-B1. Draw the power circuit arrangement of three phase variable frequencyinverter for the speed control of three phase induction motor and explain itsworking.(16)2. Explain the V/f control method of AC drive with neat sketches.(16)3. Discuss the speed control of AC motors by using three phase ACVoltage regulators.(16)4. Explain the speed control schemes of phase wound induction motors.(16)5. Explain the concatenation operation of three phase induction motors.Hence derive the speed experienced for the cascaded set.(16)6. Explain in detail about Slip power recovery scheme.(16)7. Explain the different methods of speed control used in three phaseinduction motors.(16)8. Explain the working of following methods with neat circuit diagram.i) Kramer system ii) Scherbius system(16)9. Explain in detail rotor resistance method of speed control of a slip ringinduction motor.(16)10. (i) Explain the operation of Pole changing method of speed control.(8)(ii) Explain the pole amplitude modulation method.(8)11. Explain the static Kramer method and static scherbius method of speedcontrol of three phase induction motor.(16)12. Explain in detail about the various methods of solid state speed controltechniques by using inverters.(16)13. Explain the solid state stator voltage control technique for the speedcontrol of three phase induction motor.(16)14. Explain the various methods of speed control of a three phase inductionmotor when fed through semiconductor devices.(16)

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