66. Hair dryer is a common device in people’s daily life. How much power does it most likely take from a 110 volt outlet？
(A) 10K Watt
(B) 0.5K Watt
(C) 5.0 Watt
(D) 0.5 Watt

67. The following figure is a Light-Emitting Diode (LED), and it will lit if (A) Va＜Vb (B) Va＝Vb (C) Va＞Vb (D) never

68. Arduino is an open-source hardware and software company, project, and user community that designs and manufactures single-board microcontrollers and microcontroller kits for building digital devices. Arduino board designs use a variety of microprocessors and controllers. The boards are equipped with sets of digital and analog input/output (I/O) pins that may be interfaced to various expansion boards or breadboards and other circuits. Arduino gains its popularity in school because it (A) is easier to be implemented (B) is computationally powerful than personal computer is (C) provides precise computational data (D) is the standard in industry

69. No system is perfect in the world. Whenever there is a change in a system, energy is transferred and some of that energy is dissipated. Dissipation is a term that is often used to describe ways in which energy is wasted. Any energy that is not transferred to useful energy is said to be wasted because it is lost to the surroundings. Electrical cables warming up are a good example of this. It is not useful to have warm wires as energy is dissipated to the surrounding air. According to the above example, which of the following type of energy is most likely to be the type of energy which is dissipated into? (A) unclear energy (B) electromagnetic energy (C) thermal energy (D) kinetic energy

70. Which of the following mathematical relationship between Watt and Joule is correct？ (A) Watt＝Joule× Force (B) Watt＝Joule÷Force (C) Watt＝Joule÷Time (D) Watt＝Joule÷Time

71. Checking the color code of a resistor can help us determine (A) the length of its appearance (B) the diameter of its appearance (C) the length and diameter of its appearance (D) its conductance

72. Conducting electric circuit analysis does not need the theory or principle of (A) Kirchhoff's current law (B) Kirchhoff's voltage law (C) Ohm’s law (D) Law of levers

73. The elements of sensors and controllers in electromechanics are important elements and applied to human daily life to prompt the quality of living. Which of the following application does not use both of the elements？ (A) automatic door in the convenient store (B) vending machine (C) elevator with safety control (D) fire alarm in a household

74. Ohm’s law describe the relationship among (A) Conductance, Voltage, and Current (B) Voltage, Current, and Capacitance (C) Current, voltage, and Reluctance (D) Capacitance, Current, and Resistance

75. Please find the best answer for this question. In the electrical circuit, the resistance of a resistor can be measured or read by (A) multimeter (B) Wheatstone bridge (C) resistor color code (D) all of the above

76. In the diagram, the resistance of the light bulb is 2 ohm and the resistor is 2 ohm. If the voltage source is 8 voltage, what is the current in the voltage source？ (A) 2A (B) 1A (C) 4A (D) 8A

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