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Listening Quiz: Bù Công Suất Phản Kháng Cho Tải Động Cơ Lớn – Medium Level
Th7 21, 2024
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bởi
Anna Phạm
trong
Tiếng Anh dành cho Kỹ sư điện (English for Electrical Engineer)
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1.
What is the main topic of the conversation?
How to replace a motor with a smaller one
How to compensate reactive power for a large motor load
How to reduce electricity rates by changing suppliers
How to repair a damaged motor
Explanation:
Paul and Mia discuss checking reactive power requirements and using capacitors to compensate for a large motor load.
2.
According to Paul, what do capacitors do in this situation?
Measure the motor’s voltage
Stop the motor from overheating instantly
Increase the motor’s speed
Balance the reactive power
Explanation:
Paul says, ‘We use capacitors to balance the reactive power.’
3.
What may happen if reactive power is not compensated?
The motor will automatically fix itself
The motor will produce no power at all
The motor may run hotter and use more energy
The motor will become silent
Explanation:
Paul states that if they do not compensate it, ‘The motor may run hotter and use more energy.’
4.
How can the needed capacitor size be calculated?
By measuring the motor’s reactive power demand
By comparing it to the size of the building
By asking the electricity supplier for a estimate
By checking the color of the motor casing
Explanation:
Paul says they can calculate the capacitor size ‘by measuring the motor’s reactive power demand.’
5.
What does Paul believe about reactive power compensation?
It should be avoided because it always wastes energy
It is only useful for small motors
It is important because it improves motor life and efficiency
It is unnecessary because it only adds cost
Explanation:
Paul says compensation saves more energy later and is very important; Mia adds that it improves motor life and efficiency.
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