Engineering Graphics (BT-105) - Important Questions

Construct a forward reading vernier scale of R.F. 1:20000 to measure up to 6 km with least count 0.1 km. Mark distances of 3.95 km and 0.45 km on it.

A thread unwinds from a cylindrical drum of 60 mm diameter for one complete revolution. Draw the involute of the circle as the locus of the free end of the thread.

A line AB 100 mm long is inclined at 306 to HP and 456 to VP. Its end A is 15 mm above HP and 20 mm in front of VP. Draw its top and front view projections.

Define projection and explain the principle of projection. Differentiate between first angle and third angle projections with neat sketches.

Draw the projections of a triangular prism, base 35 mm side and axis 60 mm long, lying on one of its rectangular faces in HP with its axis parallel to VP.

Draw the floor plan of a single BHK house showing all details like windows, doors and other fixtures such as WC, bath, sink. Assume suitable dimensions.

A right regular square pyramid, base 35 mm side and height 50 mm, rests on HP with base edges equally inclined to VP. It is cut by a section plane perpendicular to VP and inclined to HP. Draw its projections and true shape of section.

A right cylinder of 40 mm diameter and 60 mm height is cut by a section plane inclined at 456 to HP and passing 20 mm from base along the axis. Draw the development of the lateral surface of the truncated cylinder.

A cube of 30 mm side is placed centrally on top of a cylindrical block of 60 mm diameter and 25 mm height. Draw the isometric projection of the arrangement.

Discuss the construction and use of an isometric scale. Explain isometric projection, isometric view and conventions with neat sketch.

Write about dialog boxes and windows in CAD software. Explain their role in drawing creation with examples.

Explain producing drawings by using various coordinate input entry methods to draw straight lines. Also explain various ways of drawing circles in CAD.

Explain the layering concept with examples. How is it implemented in CAD software for creating drawings?

How does CAD software support visualization and creation of complex 3D objects and compound solids? Explain with specific tools and features for solid, surface and wireframe models.

Write short notes on: (a) Introduction to Building Information Modelling (BIM) - objectives, levels and benefits (b) Demonstration of a simple team design project - role of CAD, documentation and geometric constraints.