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Questions in engineering

[Jawaban] Pushing on a wrench helps to avoid sudden loosening that may cause hand injury. A. True B. False

[Jawaban] Which is not one of the three broad categories of the Electrical field? A. Residential B. Industrial C. Service D. Commercial

[Jawaban] Which of the following organizations are identified as sponsors in developing the NEC and NFPA 70E? Select all that apply, then select Submit. A. International Brotherhood of Electrical Workers (IBEW) B. International Electrotechnical Commission (IEC) C. National Electrical Manufacturers Association (NEMA) D. National Fire Protection Association (NFPA)

[Jawaban] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Jawaban] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Jawaban] Which is not one of the three broad categories of the Electrical field? A. Residential B. Industrial C. Service D. Commercial

[Jawaban] Cathodic protection records must be kept for: A. 6 months B. 1 year C. 7 years D. The life of the pipeline

[Jawaban] Which of the following is an example of a flammable material commonly found on a construction site? A. Concrete bags B. Wood shavings C. Nails D. Steel studs

[Jawaban] Which is not a phase involved in residential wiring? A. Testing B. Trim Out C. Rough In D. Install

[Jawaban] SECTION A 1a. What is Ohm's Law? State the mathematical expression and define each variable. b. Explain the difference between analog and digital signals. Give examples of each. 2a. Define a resistor. How does it affect an electrical circuit? b. Describe the function of a capacitor in an electronic circuit. 3a. What is the role of a diode? Provide examples of its applications. b. Explain how a transistor works. What are its different types and uses? 4a. Define integrated circuit (IC). How does it differ from discrete components? b. What is a voltage divider circuit? Provide an example of its use. 5a. Describe the concepts of alternating current (AC) and direct current (DC). b. What is a logic gate? List the basic types and their truth tables. 6a. Explain the operation of an operational amplifier (op-amp). Where is it commonly used? b. Define frequency, wavelength, and amplitude in the context of electromagnetic waves. 7a. What is a flip-flop in digital electronics? Describe its types and applications. b. Define the term bit and byte. How are they related to digital data storage? 8a. Describe the difference between synchronous and asynchronous communication. b. Explain the working principle of a light-emitting diode (LED). What are its advantages? 9a. What is a sensor? Provide examples of sensors used in electronic devices. b. Define the terms 'input impedance' and 'output impedance' in relation to electronic circuits. 10a. Describe the process of modulation and demodulation in communication systems. b. Explain the concept of multiplexing and its significance in data transmission