Diploma civil engineering drawing 2 question papers

Diploma in Civil Engineering Drawing 2 is a crucial subject that focuses on technical drawing and design principles. It involves practical and theoretical aspects, where students are expected to learn how to create accurate and precise engineering drawings. These drawings are essential for building and construction projects. By mastering this subject, students gain valuable skills required for their careers in civil engineering. This article provides a comprehensive set of questions and answers to help students prepare for their exams and understand key concepts in civil engineering drawing.

Question: What is the importance of scale in civil engineering drawings?

Answer:
Scale in civil engineering drawings ensures that the drawings are proportionate and represent the actual size of the objects. It allows engineers, architects, and builders to work with accurate measurements in real-life construction projects.

Question: What is the difference between first-angle projection and third-angle projection?

Answer:
First-angle projection is a method where the object is placed between the observer and the plane of projection. In third-angle projection, the object is placed behind the plane of projection, making the two types of projections appear differently in diagrams.

Question: Define orthographic projection.

Answer:
Orthographic projection is a method of representing a three-dimensional object in two dimensions using multiple views, typically top, front, and side views, to show all parts of the object accurately.

Question: What are the different types of lines used in engineering drawing?

Answer:
The main types of lines used in engineering drawings are continuous, dashed, chain, hidden, center, and dimension lines, each serving specific purposes like representing edges, hidden features, or measurement points.

Question: How is a dimension represented in a drawing?

Answer:
Dimensions are represented using numerical values along with arrows and extension lines to indicate the size or distance between different parts of the drawing. These help in understanding the exact measurements for construction.

Question: What is the role of section views in engineering drawings?

Answer:
Section views are used to show the internal features of a component or structure by cutting through it. This method helps in visualizing areas that are not visible in the standard external views.

Question: Explain the term “tolerances” in engineering drawings.

Answer:
Tolerances define the acceptable limits of variation for a part’s dimensions. They ensure that manufactured parts fit together correctly, even with slight variations, to maintain functionality.

Question: What is the difference between isometric drawing and axonometric drawing?

Answer:
Isometric drawing represents a 3D object on a 2D plane, where all three axes are equally scaled. Axonometric projection also shows a 3D object but the scales of the axes may vary depending on the angle.

Question: What is a title block in an engineering drawing?

Answer:
A title block is a section of the drawing that contains essential information, such as the project name, the name of the drafter, scale used, date of creation, and revision history.

Question: How do you represent a hole in an engineering drawing?

Answer:
A hole is typically represented as a circle in the relevant view of the drawing, with its diameter and depth specified. The position is marked with centerlines for accurate location.

Question: Describe the purpose of the center line in technical drawings.

Answer:
The center line is used to indicate symmetry or the center of circular or cylindrical features in a drawing. It is usually drawn with alternating long and short dashes.

Question: What are the main types of projections used in civil engineering drawing?

Answer:
The main types of projections used are orthographic projection, isometric projection, and perspective projection. Each serves to represent the 3D object in a clear, understandable 2D format.

Question: How do you dimension an inclined surface in engineering drawing?

Answer:
To dimension an inclined surface, the angle of inclination is measured relative to the horizontal or vertical axis, and appropriate dimensions are shown based on the projection method used.

Question: What is a sectional view and why is it important in civil engineering drawings?

Answer:
A sectional view is a representation of a part of the drawing that is cut along a plane to show internal features. It is crucial for revealing complex internal details that are otherwise not visible.

Question: What is the role of a plan view in civil engineering drawings?

Answer:
A plan view is a bird’s-eye view or top view of a building or structure. It helps in understanding the layout and spatial arrangement of different components in a design.

Question: What is the purpose of a reference line in technical drawings?

Answer:
A reference line in technical drawings serves as a baseline from which measurements and dimensions are taken. It provides consistency and accuracy in the positioning of elements.

Question: How is a curve represented in civil engineering drawings?

Answer:
Curves in civil engineering drawings are represented by smooth, continuous lines. Depending on the curvature, different methods, such as tangential lines or arcs, can be used for accurate representation.

Question: What are the different types of views used in technical drawings?

Answer:
The common types of views are the front view, top view, side view, sectional view, and auxiliary view. These provide different perspectives to fully describe an object or structure.

Question: How is a hidden detail shown in an engineering drawing?

Answer:
Hidden details are shown using dashed lines to represent edges or features that are not visible from the current viewpoint but are essential for understanding the full design.

Question: What is the significance of using various symbols in civil engineering drawings?

Answer:
Symbols in civil engineering drawings help represent standard components, such as electrical, plumbing, or structural elements, in a simplified manner. They ensure consistency and clarity across the drawings.

Question: What are the main purposes of using a sectioning technique in drawings?

Answer:
Sectioning is used to show the internal features of an object by cutting through it. This helps in visualizing details that would be hidden in a standard view, offering a better understanding of the design.

Question: Explain the importance of clarity in civil engineering drawings.

Answer:
Clarity in civil engineering drawings ensures that the design is understood correctly by all stakeholders, from architects to construction workers, minimizing errors and ensuring the accurate execution of the project.

Question: What are auxiliary views in civil engineering drawings?

Answer:
Auxiliary views are additional views used to show details of an object that cannot be fully captured in standard views, typically to represent inclined or oblique surfaces accurately.

Question: Why is it important to follow standard conventions in engineering drawing?

Answer:
Following standard conventions ensures that drawings are universally understandable, reducing the risk of misinterpretation and ensuring that designs are correctly implemented in construction projects.

Mastering the concepts of civil engineering drawing is essential for students pursuing a career in construction and design. By practicing these questions and answers, students can enhance their understanding and improve their chances of success in exams.