50+ Engineering Survey 2025 MCQs On Set-1 welcome to “Engineering Survey 2025 MCQ Set-1”! In this blog, we’ve curated 50+ thought-provoking multiple-choice questions covering essential topics in surveying. “Engineering Survey 2025 MCQ Set-1” These questions are designed to refresh your basics, challenge your thinking, and introduce you to practical insights in the field of engineering surveying. Let’s dive into the “Engineering Survey 2025 MCQ Set-1”! 1) Which type of survey equipment can be installed on inflatable craft like Zodiacs? A. Airborne Lidar systems B. Total stations C. Autonomous underwater vehicles D. Sidescan, single-beam, and multibeam equipment Answer D. Sidescan, single-beam, and multibeam equipment Explanation: Sidescan, single-beam, and multibeam sonar equipment are compact and portable enough for use on small, inflatable boats like Zodiacs. These systems are commonly used in hydrographic surveying for various water depth measurements. 2) What technology is primarily used in modern surveying for shallow-water areas? A. Total station (commonly used for land surveying) B. Lidar C. Multibeam sonar (used for deeper water surveys) D. Sidescan sonar (used for mapping the seafloor) Answer B. Lidar Explanation: Lidar (light detection and ranging) technology is used in airborne hydrography for shallow-water surveying. It provides accurate depth measurements and shoreline data, often integrated with other sensors for comprehensive surveys. Airborne lidar systems are efficient for covering large shallow water areas. 3) What is the main purpose of hydrographic surveys? A. To measure and describe features affecting maritime navigation B. To monitor weather patterns in coastal regions C. To map terrestrial features for land use planning D. To assess the quality of water for drinking purposes Answer A. To measure and describe features affecting maritime navigation Explanation: Hydrographic surveys measure and map underwater features crucial for safe navigation. This includes depths, shorelines, currents, and underwater obstructions. The data supports maritime safety and various marine activities. See Also: Top 15 Hydrologist Interview Questions and Answers 4) What are the major disciplines of oceanography mentioned in the text? A. Marine biology, ocean physics, and environmental science B. Marine geology, ocean chemistry, and underwater acoustics C. Hydrography, marine navigation, and ocean exploration D. Geological, biological, physical, and chemical oceanography Answer D. Geological, biological, physical, and chemical oceanography Explanation: The text explicitly lists geological, biological, physical, and chemical oceanography as the major disciplines. These branches study the Earth’s structure beneath the ocean, marine life, ocean currents and processes, and the ocean’s chemical composition, respectively. 5) Why is hydrographic surveying essential for maritime navigation? A. It assesses underwater features that impact navigation safety. B. It analyzes the chemical properties of seawater. C. It focuses solely on ocean current data. D. It mainly studies marine ecosystems and biology. Answer A. It assesses underwater features that impact navigation safety. Explanation: Safe navigation depends on knowing underwater depths, obstacles, and currents. Hydrographic surveys provide this crucial data, preventing accidents and ensuring efficient maritime operations. 6) How do modern hydrographic surveys enhance data collection? A. By exclusively utilizing surface vessels for data gathering. B. By restricting data collection to only shallow areas. C. By combining advanced sensors with specialized software. D. By depending entirely on outdated manual techniques. Answer C. By combining advanced sensors with specialized software. Explanation: Modern hydrographic surveys use advanced sensors (like multibeam sonar and AUVs) to collect high-resolution data. Specialized software processes this data, creating accurate maps of underwater features and improving navigational safety. 7) How should the surveyors correct for tidal effects during data processing? A. By modifying soundings according to tide data B. By adjusting the calibration of the LiDAR system C. By taking the average of all measurements D. By completely disregarding tidal information Answer A. By modifying soundings according to tide data Explanation: Tidal changes affect water depth measurements. Adjusting the soundings (depth measurements) using concurrent tide data ensures accurate water depths are reflected in the final navigation charts. This compensates for the fluctuating water level caused by tides. See Also: Top 15 Environmental Consultant Interview Questions and Answers 8) What advantage does crowd-sourced surveying offer over traditional methods? A. Higher data density leading to improved accuracy B. Lower cost of equipment and resources C. More precise individual measurements D. Faster data collection and processing times Answer A. Higher data density leading to improved accuracy Explanation: Crowd-sourced surveying uses many data points. While individual measurements may be less accurate, the high data density allows algorithms to produce more precise final results than traditional methods. This leads to improved accuracy in the final navigation charts. 9) What advantage does airborne lidar provide in shallow-water surveying? A. Reduced accuracy compared to traditional methods B. Limited depth measurement capabilities C. Rapid measurement of water depths up to 70m D. Increased reliance on visual inspections Answer C. Rapid measurement of water depths up to 70m Explanation: Airborne lidar rapidly measures shallow water depths, up to 70 meters. This is faster than traditional methods and allows for comprehensive shallow-water surveys. The dual-frequency laser system measures both surface and bottom reflections to determine depth. 10) How do CHARTS and BATS systems enhance traditional hydrographic surveys? A. By combining various airborne sensors for detailed data gathering B. By restricting data collection to surface-level observations C. By exclusively using manual measurement methods D. By depending only on ship-based echo soundings Answer A. By combining various airborne sensors for detailed data gathering Explanation: CHARTS and BATS systems integrate multiple airborne sensors (bathymetric lidar, topographic lidar, digital imagery). This allows for simultaneous data collection of water depths, shoreline features, and topography, providing a more comprehensive and detailed hydrographic survey than traditional methods. 11) What modern technology enhances traditional hydrographic surveying methods? A. Satellite imagery analysis B. LiDAR technology C. Thermal imaging cameras D. Geographical Information Systems (GIS) Answer B. LiDAR technology Explanation: LiDAR uses lasers to measure water depth and shoreline features, providing rapid, high-resolution data in shallow waters. This complements traditional methods like multibeam echo sounders, offering a more comprehensive survey. Airborne LiDAR is especially useful for large areas. 12) Why is hydrography important for maritime navigation? A. It determines land-based topography for urban planning. B. It provides weather forecasts for maritime activities. C. It measures physical features affecting navigation safety. D. It focuses solely on fish populations in the ocean. Answer C. It measures physical features affecting navigation safety. Explanation: Hydrography maps underwater features like depth, currents, and obstructions crucial for safe navigation. This data allows for safe passage, avoiding … Read more
