Diploma Electrical 5th Sem
Industrial Drive Questions Bank
UNIT-1:
- What is an electric drive system? (2023 March)
- Neatly draw the block diagram of an electric drive system. (2023 March)
- Point out some areas of application of electric drive. (2023 March)
- Why is the electric drive system preferred over the mechanical drive system? (2023 March)
- State advantages of squirrel cage induction motors over DC motors. (2023 March)
- Write a short note on duty cycles.
- Describe the load characteristics of DC shunt and Series motor.
- Describe the load characteristics of Three phase induction motor and Single phase induction motor..
- Name the braking methods of DC motors. Explain any one of them.
- Describe the methods of speed control of three phase induction motor and dc motor.
UNIT-2:
- Write short note on followings:
- DC servo motor. (2023 March)
- AC Servo motor
- Brushless DC motor (2023 March)
- Stepper Motor (2023 March)
- Hall sensors (2023 March)
UNIT-3:
- Explain working of following with relevant circuit diagram, waveform and expression
- Single phase Semi converter fed separately excited dc motor (2023 March)
- Single phase full converter fed separately excited dc motor (2023 March)
- Three phase Semi converter fed separately excited dc motor
- Three phase full converter fed separately excited dc motor
- Three phase dual converter fed separately excited dc motor
- Chopper Controlled DC Drives for dc series motor
UNIT-4:
- Describe the Slip Energy Recovery of an Induction Motor(Static Scherbius Drive).
- Describe the Rotor Resistance Control of an Induction Motor.
- Compare between AC drives and DC drives. (2023 March)
- Compare between static Kramer’s drive and static Scherbius drive of 3-phase induction motor. (2023 March)
- Describe the working VVVF with VSI and CSI.
- Explain the working of synchronous motor drive.
UNIT-5:
- Neatly sketch & label control circuit and power circuit of Automatic star-delta starter. (2023 March).(6)
- Neatly sketch & label control circuit and power circuit of reversing the direction of rotation of induction motor with Interlocking systems (2023 March).(6)
- State two limitation of star-delta starter.(2023 March)
- Neatly sketch & label control circuit and power circuit of Automatic Sequential control of motor and DOL starter.
- Draw and explain AC/DC motor drive using a Microcontroller block diagram.
- Draw and explain AC/DC motor drive using a Microprocessor block diagram.
- Explain the phase locked loop in dc motor speed control using block diagram.