电气工程与自动化专业英语
- ISBN:9787111311652
- 装帧:一般胶版纸
- 册数:暂无
- 重量:暂无
- 开本:16开
- 页数:207页
- 出版时间:2010-08-01
- 条形码:9787111311652 ; 978-7-111-31165-2
本书特色
《电气工程与自动化专业英语》是普通高等教育“十二五”电气信息类规划教材之一。
内容简介
本书分为电气工程基础、控制理论与技术、电机与电器设备、电力系统4大部分,共20章。为便于学生对文章的正确理解,每章后均补充了必要的专业英语词汇、短语及句子注释。本书涵盖了电气工程与自动化专业的主要专业基础理论内容,注重从实际应用出发培养学生的专业英语阅读和写作能力。 本书既可作为高等院校电气工程与自动化及相关专业高年级学生的专业英语教材,也可作为从事电气信息类各专业工程技术人员的参考用书。
目录
节选
《电气工程与自动化专业英语》分为电气工程基础、控制理论与技术、电机与电器设备、电力系统4大部分,共20章。为便于学生对文章的正确理解,每章后均补充了必要的专业英语词汇、短语及句子注释。《电气工程与自动化专业英语》涵盖了电气工程与自动化专业的主要专业基础理论内容,注重从实际应用出发培养学生的专业英语阅读和写作能力。《电气工程与自动化专业英语》既可作为高等院校电气工程与自动化及相关专业高年级学生的专业英语教材,也可作为从事电气信息类各专业工程技术人员的参考用书。
相关资料
插图:2. Electronic CircuitsCurrent flow takes place in electronic circuits. A circuit is a path for electric current flow. Electric current flows only when it has a complete, or closed-circuit, path. There must be a source of electrical energy to cause current to flow along a closed path. 4 The electrical energy is converted into more useful energy, for example, the light energy.Electric current cannot flow if a circuit is open. An open circuit does not provide a complete path for current flow. Free electrons of the conductor would no longer move from one atom to another. An example of an open circuit is a "burned-out" light bulb. Actually, the filament (the part that produces light) has become open. The open filament of a light bulb stops current flow from the source of electrical energy. This causes the bulb to stop burning, or producing light.Another common circuit term is a short circuit. A short circuit, which can be very harmful, occurs when a conductor connects directly across the terminals of an electrical energy source. For safety purposes, a short circuit should never happen because short circuits cause too much current to flow from the source. If a wire is placed across a battery, a short circuit occurs. The battery would probably be destroyed and the wire could get hot or possibly melt due to the short circuit.1.3.2 VoltageWater pressure is needed to force water along a pipe. Similarly, electrical pressure is needed to force current along a conductor. If a motor is rated at 220 V, it requires 220 V of electrical pressure applied to the motor to force the proper amount of current through it. More pressure would increase the current flow and less pressure would not force enough current to flow. The motor would not operate properly with too high or too low voltage. An electrical energy source such as a battery or generator produces current flow through a circuit. As voltage is increased, the a- mount of current in the circuit is also increased. Voltage is also called electromotive force (EMF).
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