Power Semiconductor Drives Imp Qusts – PSD Important Questions

Power Semiconductor Drives Imp Qusts Pdf file – PSD Important Questions

Please find the attached pdf file of Power Semiconductor Drives Important Questions Bank – PSD Imp Qusts

Link – PSD Question Bank

UNIT-I
CONTROL OF DC MOTORS BY SINGLE PHASE CONTROLLED CONVERTERS

1. What are the advantages of electrical drives
2. State essential parts of electrical drives. What are the function of a power modulator
3. Write a brief note on the motors employed in variable speed drives

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UNIT-II
CONTROL OF DC MOTORS BY THREE PHASE CONTROLLED CONVERTERS

1. A separately – excited dc motor is require to be controlled from a 3-phase source for operation in the first quadrant only. The most preferred converter would be
2. A 3-ϕ semi converter is connected to 400 v, 3- ϕ, 50Hz ac supply is delivering 20 A to dc motor. If the firing angle α = 30° , the power input to the motor is
3. A 3ϕ semi converter connected to 400 V, 3ϕ supply delivering 10A continuous current with firing angle α = 60° The r m s value of the line current is

UNIT-III
FOUR QUADRANT OPERATION OF DC DRIVES

1. What is 4-quadrant operation and explain with converters
2. What is a dual converter
3. What is braking

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UNIT-1V
CONTROL OF DC MOTORS BY CHOPPERS

1. What are the types of the DC chopper drives
2. What is motoring control in choppers
3. What is régénérative in choppers

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UNIT-V
CONTROL OF INDUCTION MOTOR OF STATOR SIDE

1. What are advantages of induction motor
2. What are the application of slip ring induction motor
3. Define rotor current frequency

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