facts 2.2. Aerodynamic effect 2.2.1. Define of aerodynamic drag force 2.2.2. Other aerodynamic contributes 2.2.3. Effective of frontal area and coefficient of drag 2.3. Rolling resistance 2.3.1. Definition of rolling resistance 2.3.2. Combined analysis of aerodynamic drag and rolling resistance 2.3.3. Maximum power that can be transferred by the tires to the road 2.4. Transmission efficiency analysis 2.4.1. Structures about the transmission system available 2.4.2. Efficiency
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conducting then it has: (a) High resistance (b) Low resistance (c) Medium resistance (d) Zero resistance Answer: a 2. The region in which there are no free charge carriers in a semiconductor diode is called: (a) Anode region (b) Cathode region (c) Depletion region (d)None of the above Answer: c 3. When a diode is in its conducting state: (a) Current flows from cathode to anode (b) Current flows from anode to cathode (c) Current flows back and forth (d) No current flows Answer: b 4. Zener
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determined 5. a) b) c) d) 6. The unit of current is the: a) ampere (A) b) volt (V) 7. Which of the following is NOT true for a series circuit a) There is more than one path for electrons to flow b) The current is the same throughout the circuit c) The voltage drops from load to load d) The resistance increases as more loads are added 8. If 5A of current flows through a load which experiences a 10V drop in potential difference, what is the resistance of the load? a) 0.5 Ω b) 2Ω c) 50
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plant. V=IR P=IV P=I2R Where V represents Voltage drop, I represents Current, R represents Resistance, & P represents Power lost. This intro tells me that I will be using a plant voltage of 120V to solve the first cases. I can see that I’ll be predicting various voltage drops across a completed circuit, from a power plant to a house. Exercise 5A, Case 2 If nothing is hooked up in the house: 1.) What is the current through the supply wire? To solve this I go back to my equation, deciding
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BATTERY SAFETY AND OHMS LAW Battery Safety Basics- Do not overcharge or over-discharge. When the charger indicates that the batteries have been fully charged, you can remove them from the charger. Leaving batteries in a charger all night long or longer can cause them to be overcharged, which can result in battery failure (depending on the charger). Charging your battery over 4.25 volts can shorten its life-cycle and going over 4.5 volts can cause it to burst. Cease using your charger if this
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Highly-Efficient Battery Chargers with ParallelLoaded Resonant Converters Ying-Chun Chuang e-mail:chuang@mail.ksu.edu.tw Yu-Lung Ke e-mail:yulungke@ms25.hinet.net Shun-Yi Chang e-mail:nickelayu@hotmail.com Department of Electrical Engineering, Kun Shan University, Tainan Hsien 71003, Taiwan, R.O.C. Abstract—The well established advantages of resonant converters for battery chargers, including fast response, low switching losses, easy of the control scheme, simplicity of circuit configuration
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graph? 1 V A. B. log P against log V C. P against log V D. 2. P against log P against V The power P dissipated in a resistor of resistance R in which there is a current I is given by P = I2 R The uncertainty in the value of resistance of a particular resistor is !10% and the uncertainty in the value of the current in the resistor is !3%. The best estimate for the uncertainty of the power dissipated is A. B. !9%. C. !16%. D. 3. !6%. ±19%. When
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Chapter 25 – Current, Resistance and Electromotive Force - Current - Resistivity - Resistance - Electromotive Force and Circuits Current Electric current: charges in motion from one region to another. Electric circuit: conducting path that forms a closed loop in which charges move. In these circuits, energy is conveyed from one place to another. Electrostatics: E = 0 within a conductor _ Current (I) = 0, but not all charges are at rest, free electrons can move (v ~ 106 m/s). Electrons
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Project Design Problem Statement * The purpose of this project is to make a resistor from a pencil. I would like or want to figure out how electricity is trapped or contained to form the energy in a circuit to make electrical appliances work. In my experiment: I will create my own resistor out of pencils, along with my own circuit board to see the effects a circuit has on energy. *What a resistor does is slows down the flow of electricity through devices, which now days many devices
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Links * Goals of this Lab * Prelab * Lab Experiments Goals of this Lab * Wind a toroidal inductor. * Measure the inductance and the resistance of an inductor. * Use an inductor to step up the voltage of a battery. * Build a circuit for lighting up white LEDs from a 1 Volt battery. This lab is a group activity. The current group assignments are given here. One lab report per group needs to be turned in on D2L. The responsibilites for the successful completion of the lab
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