Description : The matrix representation for scaling in homogeneous coordinates is a.P’=S*P b.P’=R*P c.P’=dx+dy d.P’=S*S
Last Answer : a.P’=S*P
Description : A straight line segment is translated by applying the transformation equation a.P’=P+T b.Dx and Dy c.P’=P+P d.Only c
Last Answer : a.P’=P+T
Description : The two-dimensional translation equation in the matrix form is a.P’=P+T b.P’=P-T c.P’=P*T d.P’=P
Description : To generate a rotation , we must specify a.Rotation angle θ b.Distances dx and dy c.Rotation distance d.All of the mentioned
Last Answer : a.Rotation angle θ
Description : The objects transformed using the equation P’=S*P should be a.Scaled b.Repositioned c.Both a and b d.Neither a nor b
Last Answer : c.Both a and b
Description : In 2D-translation, a point (x, y) can move to the new position (x’, y’) by usingthe equation a.x’=x+dx and y’=y+dx b.x’=x+dx and y’=y+dy c.X’=x+dy and Y’=y+dx d.X’=x-dx and y’=y-dy
Last Answer : b.x’=x+dx and y’=y+dy
Description : The translation distances (dx, dy) is called as a.Translation vector b.Shift vector c.Both a and b d.Neither a nor b
Description : A two dimensional rotation is applied to an object by a.Repositioning it along with straight line path b.Repositioning it along with circular path c.Only b d.Any of the mentioned
Last Answer : c.Only b
Description : General pivot point rotation can be expressed as a.T(zr,yr).R(θ).T(-zr,-yr) = R(xr,yr,θ) b.T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ) c.T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ) d.T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ)
Last Answer : b.T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ)
Description : Rotation is simply---------object w.r.t origin or centre point. a.Turn b.Shift c.Compression d.Drag element
Last Answer : a.Turn
Description : Which co-ordinates allow common vector operations such as translation, rotation,scaling and perspective projection to be represented as a matrix by which the vector is multiplied? a.vector co-ordinates b.3D co-ordinates c.affine co-ordinates d.homogenous co-ordinates
Last Answer : d.homogenous co-ordinates
Description : Match the following: NC code DefinitionP. M05 1. Absolute coordinate system Q. G01 2. Dwell R. G04 3. Spindle stop S. G09 4. Linear interpolation a.P-2, Q-3, R-4, S-1 b.P-3, Q-4, R-1, S-2 c.P-3, Q-4, R-2, S-1 d.P-4, Q-3, R-2, S-1
Last Answer : c.P-3, Q-4, R-2, S-1
Description : The applications of the Finite Element Method in two-dimensional analyses are . a.stretching of plates b.gravity of dams c.axisymmetric shells d.all of the above
Last Answer : c.axisymmetric shells
Description : From the following, which type of element is not two dimensional? a.Tetrahedron b.Quadrilateral c.Parallelogram d.Rectangle
Last Answer : a.Tetrahedron
Description : Which of the following uses a number of two-dimensional profiles for generating athree-dimensional object? a.Tweaking b.Lofting c.Filleting d.none of the above
Last Answer : b.Lofting
Description : We translate a two-dimensional point by adding a.Translation distances b.Translation difference c.X and Y d.Only a
Last Answer : d.Only a
Description : Which of the following RP technologies uses molten material as the starting material? a.Three-Dimensional Printing b.Fused-Deposition Modeling c.Stereolithography d.Selective Laser Sintering
Last Answer : c.Stereolithography
Description : Example for one – Dimensional element is . a.triangular element b.brick element c.truss element d.axisymmetric element
Last Answer : c.truss element
Description : In the following three-dimensional modelling techniques. Which do not requiremuch computer time and memory? a.Surface modelling b.Solid modelling c.Wireframe modelling d.All of the above
Last Answer : c.Wireframe modelling
Description : In Coordinates, a points in n-dimensional space is represent by(n+1) coordinates. a.Scaling b.Homogeneous c.Inverse transformation d.3D Transformation
Last Answer : b.Homogeneous
Description : In truss analysis, the reactions can be found by using the equation . a.R=KQ+F b.R=KQ-F c.R=K+QF d.R=K-QF
Last Answer : b.R=KQ-F
Description : Coordinate of â- ABCD is WCS are: lowermost corner A(2,2) & diagonal corner are C(8,6). W.r.t MCS. The coordinates of origin of WCS system are (5,4). If the axes of WCS are at 600 in CCW w.r.t. the axes of MCS. Find new ... in MCS. a.(4.268, 6.732) b.(5.268, 6.732) c.(4.268, 4.732) d.(6.268, 4.732)
Last Answer : a.(4.268, 6.732)
Description : If two pure reflections about a line passing through the origin are appliedsuccessively the result is a.Pure rotation b.Quarter rotation c.Half rotation d.True reflection
Last Answer : a.Pure rotation
Description : B rotational axis is rotation about Axis. a.X b.Y c.Z d.C
Last Answer : a.X
Description : In CNC Program M03 is refer to…… a.Spindle ON in Clockwise rotation b.Spindle ON in Counter Clockwise rotation c.Spindle OFF in Clockwise rotation d.Spindle OFF in Counter Clockwise rotation
Last Answer : a.Spindle ON in Clockwise rotation
Description : Rotation of spindle is designated by one of the following axis: a.a-axis b.b-axis c.c-axis d.none of the mentioned
Last Answer : d.none of the mentioned
Description : Rotation about Z-axis is called…………. a.a-axis b.b-axis c.c-axis d.none of the mentioned
Last Answer : c.c-axis
Description : Which of the following is true for the stiffness matrix (K)? a.K is a banded matrix b.K is un-symmetric c.K is an un-banded matrix d.none of the above
Last Answer : a.K is a banded matrix
Description : If the body is in a state of equilibrium then the energy is minimum. This statement isconsidered in . a.inverse matrix method b.weighted residual method c.Galerkin’s principle d.the minimum potential energy principle
Last Answer : d.the minimum potential energy principle
Description : Which of the following is not a method for calculation of the stiffness matrix? a.The minimum potential energy principle b.Galerkin's principle c.Weighted residual method d.Inverse matrix method
Last Answer : d.Inverse matrix method
Description : The determinant of an element stiffness matrix is always a.3 b.2 c.1 d.
Last Answer : d.0
Description : For 1-D bar elements if the structure is having 3 nodes then the stiffness matrix formed ishaving an order of a.2*2 b.3*3 c.4*4 d.6*6
Last Answer : b.3*3
Description : Stiffness matrix depends on a.material b.geometry c.both material and geometry d.none of the above
Last Answer : c.both material and geometry
Description : How many minimum numbers of zeros are there in ‘3 x 3’ triangular matrix? a.4 b.3 c.5 d.6
Last Answer : b.3
Description : Transpose of a column matrix is a.Zero matrix b.Identity matrix c.Row matrix d.Diagonal matrix
Last Answer : c.Row matrix
Description : Which transformation distorts the shape of an object such that the transformed shapeappears as if the object were composed of internal layers that had been caused to slide over each other? a.Rotation b.Scaling up c.Scaling down d.Shearing
Last Answer : d.Shearing
Description : If a ‘3 x 3’ matrix shears in Y direction, how many elements of it are ‘0’? a.2 b.3 c.6 d.5
Last Answer : d.5
Description : If a ‘3 x 3’ matrix shears in X direction, how many elements of it are ‘1’? a.2 b.3 c.6 d.5
Description : What is the determinant of the pure reflection matrix? a.1 b.0 c.-1 d.2
Last Answer : c.-1
Description : Reflection is a special case of rotation. a.TRUE b.FALSE c. d.
Last Answer : b.FALSE
Description : If the scaling factors values Sx and Sy are assigned to unequal values then a.Uniform rotation is produced b.Uniform scaling is produced c.Differential scaling is produced d.Scaling cannot be done
Last Answer : c.Differential scaling is produced
Description : If the scaling factors values sx and sy are assigned to the same value then……… a.Uniform rotation is produced b.Uniform scaling is produced c.Scaling cannot be done d.Scaling can be done or cannot be done
Last Answer : b.Uniform scaling is produced
Description : The transformation that is used to alter the size of an object is a.Scaling b.Rotation c.Translation d.Reflection
Last Answer : a.Scaling
Description : From the following, which one will require 4 matrices to multiply to get the final position? a.Rotation about the origin b.Rotation about an arbitrary Point c.Rotation about an arbitrary line d.Scaling about the origin
Last Answer : b.Rotation about an arbitrary Point
Description : Positive values for the rotation angle θ defines a.Counter clockwise rotations about the end points b.Counter clockwise translation about the pivot point c.Counter clockwise rotations about the pivot point d.Negative direction
Last Answer : c.Counter clockwise rotations about the pivot point
Description : The rotation axis that is perpendicular to the xy plane and passes through the pivot pointis known as a.Rotation b.Translation c.Scaling d.Shearing
Last Answer : a.Rotation
Description : The basic geometric transformations are a.Translation b.Rotation c.Scaling d.All of the mentioned
Last Answer : d.All of the mentioned
Description : -------is a rigid body transformation that moves objects without deformation. a.Rotation b.Scaling c.Translation d.All of the mentioned
Last Answer : c.Translation
Description : We can combine the multiplicative and translational terms for 2D into a singlematrix representation by expanding a.2 x 2 matrix into 4x4 matrix b.2 x 2 matrix into 3 x 3 c.3 x 3 matrix into 2 x 2 d.Only c
Last Answer : b.2 x 2 matrix into 3 x 3
Description : What is the use of homogeneous coordinates and matrix representation? a.To treat all 3 transformations in a consistent way b.To scale c.To rotate d.To shear the object
Last Answer : a.To treat all 3 transformations in a consistent way