When A Point Is Above HP And Behind VP It Is In?

When a plane is perpendicular to both HP and VP its traces will be?

Explanation: When a plane is perpendicular to both the reference planes, its traces are perpendicular to xy reference line and intersect at xy reference line even when the planes are inclined with both reference planes the traces intersect at xy line..

What is another name for orthographic projection?

Orthographic projection (sometimes referred to as orthogonal projection, used to be called analemma) is a means of representing three-dimensional objects in two dimensions.

What is projection of a point?

The projection of a point is its shadow on the paper sheet. The shadow of a point on the paper sheet is this point itself (idempotency). … The projection parallel to a direction D, onto a plane or parallel projection: The image of a point P is the intersection with the plane of the line parallel to D passing through P.

What is first angle projection?

First-angle projection: In this type of projection, the object is imagined to be in the first quadrant. Because the observer normally looks from the right side of the quadrant to obtain the front view, the objects will come in between the observer and the plane of projection.

What is the difference between 1st and 3rd angle projection?

In third-angle projection, the view of a component is drawn next to where the view was taken. In first-angle projection, the view is drawn on the other end of the component, at the opposite end from where the view was taken.

When a point is above HP its front view is?

1. When a point lies in the first quadrant, it will be above H.P. and in front of V.P. 2. When the point lies in the second quadrant, it will be above H.P. and behind V.P.

Where is HP and VP in engineering drawing?

Front View (FV): The projection on the VP is called the Front View (FV) or Vertical Projection or front elevation or Elevation. HP: The plane which is Horizontal and perpendicular to VP is Horizontal Plane. Top View (TV): The projection on the HP is called the Top View (TV) or Horizontal Projection or Plan.

Which line is used for visible outlines?

A visible line, or object line is a thick continuous line, used to outline the visible edges or contours of an object.

What three sides make an orthographic projection?

Orthographic drawings are also known as multiviews. The most commonly used views are top, front, and right side.

What are the two main types of projection?

The most common types are the perspective and orthographic projections.

When a point is above HP and behind VP The point is resting in which quadrant?

Explanation: The position of reference planes will be similar to quadrants in x, y plane co-ordinate system. As the 2nd quadrant lies above the x-axis and behind the y-axis here also the 2nd quadrant is above H.P, behind V.P.

How many types of projection are there?

Axonometric projection is further subdivided into three categories: isometric projection, dimetric projection, and trimetric projection, depending on the exact angle at which the view deviates from the orthogonal.

When the axis of solid is perpendicular to HP?

Explanation: When the axis of solid is perpendicular to H.P it is indirectly saying that the base is parallel to the horizontal plane so the projection on to it gives true shape of the base and then we can project and find the other dimensions. 4.

When a plane is parallel to VP and perpendicular to HP and PP always first?

Whereas if a plane is parallel to h.p and perpendicular to v.p, then pp is always back view (BV) first.

When the drawings are drawn smaller than the actual size of object then scale is known as?

Explanation: The representative fraction 1:3 indicates that the dimension of the drawing is one-third of the actual object. Since the drawing is smaller than the actual object, this type of scale is called a reducing scale.

Which grade of pencil is used for drawing arrowheads?

Explanation: Arrowheads resembles the extent of dimensions. It should be sharply defined and uniform throughout the drawing. Generally, 3 mm in length is used. For such precision small diameter pencils are used, hence 2H is used as arrowheads.

In which projection is projection lines are meet at one point?

A vanishing point is a point on the image plane of a perspective drawing where the two-dimensional perspective projections (or drawings) of mutually parallel lines in three-dimensional space appear to converge.

What is Isorthographic projection?

Orthographic projection, common method of representing three-dimensional objects, usually by three two-dimensional drawings in each of which the object is viewed along parallel lines that are perpendicular to the plane of the drawing. …