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Questions and Answers
What is the primary function of the intermediate circuit in a variable speed drive?
What is the primary function of the intermediate circuit in a variable speed drive?
- To control the speed and torque of the alternating current motor
- To reduce power supply problems in the facility
- To smooth the uneven, rippled output of the rectifier to near a pure DC output (correct)
- To convert the fixed AC voltage and frequency input into a variable frequency output
What is the advantage of using a variable speed drive in an alternating current motor?
What is the advantage of using a variable speed drive in an alternating current motor?
- It improves process control and reduces energy consumption (correct)
- It decreases the motor's heating and stress
- It reduces the energy efficiency of the motor
- It increases the power supply problems in the facility
What type of motor is commonly used with a variable speed drive?
What type of motor is commonly used with a variable speed drive?
- Single-phase induction motor
- DC motor
- Three-phase induction motor (correct)
- Stepper motor
What is the benefit of using a soft start feature in a variable speed drive?
What is the benefit of using a soft start feature in a variable speed drive?
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What is the purpose of the rectifier or converter in a variable speed drive?
What is the purpose of the rectifier or converter in a variable speed drive?
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