Questions in: Engineering

Right Answer:
The natural resistance of the earth refers to its ability to conduct electrical current, which is influenced by soil composition, moisture content, and temperature. Wet soil has lower resistance compared to dry soil because water increases the soil's conductivity. Rain or snow can reduce the natural resistance of the earth by saturating the soil, allowing for better electrical conduction. Natural resistance is typically measured in ohms and varies widely depending on the specific conditions of the soil.

Right Answer:
Shop welds are generally stronger than field welds due to better control over the welding environment and conditions.

Right Answer:
Life is the condition that distinguishes living organisms from inorganic matter, characterized by growth, reproduction, functional activity, and continual change preceding death.

Right Answer:
To calculate the cable size for LT (Low Tension) and HT (High Tension) power cables, follow these steps:

1. **Determine Load Requirements**: Calculate the total load in kilowatts (kW) or kilovolt-amperes (kVA).

2. **Calculate Current**: Use the formula:
- For single-phase: ( I = frac{P}{V times text{PF}} )
- For three-phase: ( I = frac{P}{sqrt{3} times V times text{PF}} )
where ( I ) is current in amperes, ( P ) is power in watts, ( V ) is voltage, and PF is power factor.

3. **Select Cable Type**: Choose the type of cable (e.g., PVC, XLPE) based on application and environment.

4. **Consider Voltage Drop**: Calculate voltage drop using:
-

Right Answer:
HYSD bar stands for High Yield Strength Deformed bar, which is a type of steel reinforcement bar used in construction that has a high yield strength and surface deformations to improve bonding with concrete.

Right Answer:
Examples of Newtonian fluids include water and air. Examples of non-Newtonian fluids include ketchup and cornstarch mixed with water (oobleck).

Right Answer:
Negative 24VDC is used in a proximeter to ensure proper operation and signal integrity, as it helps to reduce noise and interference in the sensing circuit, providing a stable reference for the sensor's output.

Right Answer:
The academic facilities of my chosen college/university include well-equipped laboratories, modern classrooms, a comprehensive library, access to research centers, and online learning resources.

Right Answer:
Success means achieving your goals and fulfilling your potential, whether in personal life, career, or any other area you value.

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We use 3 1/2 core cables in power transmission to carry three phases of electrical power and one additional core for the neutral or earth connection, ensuring balanced load and safety in the system.

Right Answer:
Supernatural power refers to abilities or forces that are beyond the natural laws of the universe, often attributed to divine beings, magic, or otherworldly entities.

Right Answer:
The Coriolis principle for a mass flowmeter states that when a fluid flows through a vibrating tube, the Coriolis effect causes a phase shift in the vibration proportional to the mass flow rate of the fluid. This phase shift is measured to determine the mass flow rate accurately.

Right Answer:
Google is a multinational technology company that specializes in Internet-related services and products, including search engines, online advertising, cloud computing, software, and hardware. It is best known for its search engine, which allows users to find information on the web quickly and efficiently. Google also offers services like Gmail, Google Maps, Google Drive, and the Android operating system.

Right Answer:
The "n" in "n/mm²" stands for "newton," which is a unit of force. So, "n/mm²" refers to the strength of concrete measured in newtons per square millimeter.

Right Answer:
I chose this firm because of its strong reputation in the industry, commitment to innovation, and opportunities for professional growth that align with my career goals.

Right Answer:
Onsite projects are those where the work is done at the client's location, while offshore projects are conducted at a different location, often in another country, typically to take advantage of cost savings or specialized skills.