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Questions in engineering

[Done] 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

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

[Done] 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

[Done] Which electrical field does not typically use conduit? A. Industrial B. Residential C. Commercial

[Done] Scaffolds and scaffold components must be inspected for visible defects by a competent person: A. Before each work shift B. After any occurrence which could affect a scaffold's structural integrity C. At least every 30 days D. Both A and B

[Done] Which type of fastening tool has a self-contained power source? A. Hand tool B. Electric tool C. Pneumatic tool D. Battery powered tool

[Done] Which fire class do electrical equipment and items carrying current belong to? A. Class A B. Class B C. Class C D. Class D E. Class K

[Done] Which type of equipment uses a DC power supply for impressed cathodic protection systems? A. Rectifier B. Engine generator C. Turbine generator D. Thermoelectric generator

[Done] Select the best answer for the question. 8. Components of a commercial fan coil unit include a A. compressor, condenser, metering device, and evaporator. B. fan, compressor, and condenser. C. fan and electric strip heaters. D. fan, water coil, filter, fresh air supply, and control system.

[Done] How far apart should fuel gas and oxygen be stored? A. 5 feet B. 10 feet C. 15 feet D. 20 feet