McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 451. |
The value of the ratio of isometric length to true length is |
| A. | 0.141 |
| B. | 0.372 |
| C. | 0.815 |
| D. | 0.642 |
| Answer» C. 0.815 | |
| Explanation: if we represent a cube in isometric view the diagonal of upper face of cube is equal to the true length of the diagonal. from it by drawing an actual square around it and then calculating it gives (1/cos 30)/ (1/cos 45) =isometric /true =0.815. | |
| 452. |
The length in isometric drawing of line is 20 cm. What is the true length of it? |
| A. | 24.53 cm |
| B. | 15.46 cm |
| C. | 19.31 cm |
| D. | 23.09 cm |
| Answer» A. 24.53 cm | |
| Explanation: the ratio of isometric length to true length is 0.815 so here it is given isometric length of 20 cm. 0.815 = 20 cm / true length => true length = 20 cm /0.815 = | |
| 453. |
The true length of edge of cube is 15 cm what will be the isometric length? |
| A. | 17.78 cm |
| B. | 14.48 cm |
| C. | 12.99 cm |
| D. | 12.22 cm |
| Answer» D. 12.22 cm | |
| Explanation: the ratio of isometric length to true length is 0.815 so here it is given true length of 15 cm. 0.815 = isometric length / 15 cm => isometric length = 15 cm x 0.815 = | |
| 454. |
The lines parallel to isometric axes are called lines. |
| A. | parallel |
| B. | auxiliary |
| C. | isometric |
| D. | oblique |
| Answer» C. isometric | |
| Explanation: the angle between the isometric axes is 120 degrees if any line is parallel to it then those are called isometric lines. auxiliary lines may make any angle with horizontal and oblique is not related here. | |
| 455. |
The planes parallel to any of the two isometric lines are called planes. |
| A. | parallel |
| B. | auxiliary |
| C. | isometric |
| D. | oblique |
| Answer» C. isometric | |
| Explanation: the planes on which the faces of cube lie if it is placed in isometric view can be consider as the isometric planes which are parallel to two axes of isometric view which are x, y, z axes of isometric view. | |
| 456. |
Isometric view of cube is drawn the angle between the edge of cube and horizontal will be |
| A. | 15 degrees |
| B. | 120 degrees |
| C. | 45 degrees |
| D. | 30 degrees |
| Answer» D. 30 degrees | |
| Explanation: isometric view of cube is drawn the angle between the edge of cube and horizontal will be 30 degrees because as the angle between the base and axis lower to will be 90 degrees the angle between the axes is 120 degrees. 120-90 = 60 degrees. | |
| 457. |
Isometric view of cube is drawn the angle between the edge of cube and vertical will be |
| A. | 15 degrees |
| B. | 120 degrees |
| C. | 60 degrees |
| D. | 30 degrees |
| Answer» C. 60 degrees | |
| Explanation: isometric view of cube is drawn the angle between the edge of cube and vertical will be 60 degrees because the angle between the edge and horizontal is 30 and so angle between vertical and horizontal is 90. | |
| 458. |
The true length of line is 40 cm and isometric view of it is drawn the length would decrease to |
| A. | 28.28 cm |
| B. | 32.6 cm |
| C. | 34.6 c |
| D. | 38.63 cm |
| Answer» B. 32.6 cm | |
| Explanation: the ratio of isometric length to true length is 0.815 so here it is given true length of 40 cm. 0.815 = isometric length / 40 cm => isometric length = 40 cm x 0.815 = | |
| 459. |
The true length of the line is 30 cm and isometric view is drawn. How much length is reduced? |
| A. | 24.45 cm |
| B. | 25.98 cm |
| C. | 4.01 cm |
| D. | 5.55 cm |
| Answer» D. 5.55 cm | |
| Explanation: the ratio of isometric length to true length is 0.815 so here it is given true length of 30 cm. 0.815 = isometric length / 30 cm => isometric length = 30 cm x 0.815 = 24.45 cm. 30 cm – 24.45 cm =5.55 cm. | |
| 460. |
The objects we see in nature will be in Isometric view. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: the objects we watch in our surrounds are not isometric view they are perspective view. isometric view is imaginary view in which lines of sight are perpendicular to picture plane and are parallel to each other. | |
| 461. |
Isometric view of cube is drawn the angle between the adjacent edges is |
| A. | 90 degrees, 120 degrees |
| B. | 60 degrees, 120 degrees |
| C. | 120 degrees, 120 degrees |
| D. | 90 degrees, 30 degrees |
| Answer» B. 60 degrees, 120 degrees | |
| Explanation: given is a cube in which the adjacent angle are all equal and equal to 90 degrees and if isometric view is drawn then it show front faces with angles bet between them as 120 degrees and if take angles between the back and front faces we get the 60 degrees. | |
| 462. |
Isometric view of cube is drawn and faces of cube are seen as |
| A. | square |
| B. | rectangle |
| C. | rhombus |
| D. | parallelogram |
| Answer» C. rhombus | |
| Explanation: it is given isometric view of cube is drawn and it shows regular hexagon in which any of the faces represent rhombus which have diagonals cutting each other at 90 degrees any other adjacent edges have angles between them as 60 and 120 degrees. | |
| 463. |
If an isometric projection is drawn with true measurements but not with isometric scale then the drawings are called |
| A. | none of the mentioned |
| B. | isometric view |
| C. | isometric perception |
| D. | orthographic view |
| Answer» B. isometric view | |
|
Explanation: Due to the ease of construction and the advantage of measuring the dimensions directly from the drawing, it has become a general practice to use the true scale instead of the isometric scale. |
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| 464. |
If an isometric drawing is made use of isometric scale then the drawings are called |
| A. | isometric projection |
| B. | isometric view |
| C. | isometric perception |
| D. | orthographic view |
| Answer» A. isometric projection | |
| Explanation: to avoid confusion, the view drawn with the true scale is called isometric drawing or isometric view, while that drawn with the use of isometric scale is called isometric projection. | |
| 465. |
Front view of the square is given and has to draw its isometric view which angle the base has to make with horizontal? |
| A. | 90 degrees |
| B. | 15 degrees |
| C. | 30 degrees |
| D. | 60 degrees |
| Answer» C. 30 degrees | |
| Explanation: while drawing the isometric view of any figure made of lines the base always makes 30 degrees with horizontal and so in square and another parallel line also | |
| 466. |
Front view of the square is given and has to draw its isometric view which angle the vertical edge has to make with horizontal? |
| A. | 90 degrees |
| B. | 15 degrees |
| C. | 30 degrees |
| D. | 60 degrees |
| Answer» A. 90 degrees | |
| Explanation: in isometric view vertical lines exist and make 90 degrees with the horizontal so if the front view of a square is given and drawn to isometric view the angle between the vertical edge and horizontal is 90 degrees. | |
| 467. |
Top view of a square is given and has to draw its isometric view which angle the base has to make with horizontal? |
| A. | 90 degrees |
| B. | 15 degrees |
| C. | 30 degrees |
| D. | 60 degrees |
| Answer» C. 30 degrees | |
| Explanation: while drawing the isometric view of any figure made of lines the base always makes 30 degrees with horizontal and so in square and another parallel line also makes 30 degrees with horizontal and other sides will be perpendicular to horizontal. | |
| 468. |
Top view of a square is given and has to draw its isometric view which angle the vertical edge has to make with horizontal? |
| A. | 90 degrees |
| B. | 15 degrees |
| C. | 30 degrees |
| D. | 60 degrees |
| Answer» C. 30 degrees | |
| Explanation: in isometric view vertical lines exist and make 90 degrees with the horizontal so if the top view of a square is given and drawn to isometric view the angle between the vertical edge and horizontal is 90 degrees. | |
| 469. |
Front view of triangle is given and isometric view is to be drawn which of the following is correct procedure in drawing isometric view. |
| A. | turning the triangle such that base is making 30 degrees with horizontal |
| B. | by increasing or decreasing angles at required proportions |
| C. | drawing parallel to isometric axes |
| D. | drawing rectangle with base and height of triangle and the drawing rectangle parallel to isometric axes and pointing triangle in it |
| Answer» D. drawing rectangle with base and height of triangle and the drawing rectangle parallel to isometric axes and pointing triangle in it | |
| Explanation: the surface of the triangle is vertical and the base is horizontal so base will | |
| 470. |
Isometric view of equilateral triangle will be |
| A. | equilateral triangle |
| B. | scalene triangle |
| C. | isosceles triangle |
| D. | right angled triangle |
| Answer» B. scalene triangle | |
| Explanation: whatever the polygon when we are drawing it in isometric views the base will make 30 degrees and other sides will tend to show up like we are watching from some particular point as in perspective view in 1 dimension. | |
| 471. |
When a square is drawn to an isometric view it will give rectangle. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: whatever the polygon when we are drawing it in isometric views the base will make 30 degrees and other sides will tend to show up like we are watching from some particular point as in perspective view in 1 dimension. | |
| 472. |
When a rectangle is drawn to an isometric view it will give parallelogram. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: whatever the polygon when we are drawing it in isometric views the base will make 30 degrees and other sides will tend to show up like we are watching from some particular point as in perspective view in 1 dimension. | |
| 473. |
Isometric view of right angled triangle will be |
| A. | equilateral triangle |
| B. | scalene triangle |
| C. | isosceles triangle |
| D. | right angled triangle |
| Answer» B. scalene triangle | |
| Explanation: whatever the quadrilateral when we are drawing it in isometric views the base will make 30 degrees and other sides will tend to show up like we are watching from some particular point as in perspective view in 1 dimension. | |
| 474. |
Isometric view of rhombus will become |
| A. | parallelogram |
| B. | rhombus |
| C. | rectangle |
| D. | square |
| Answer» A. parallelogram | |
| Explanation: whatever the quadrilateral when we are drawing it in isometric views the base will make 30 degrees and other sides will tend to show up like we are watching from some particular point as in perspective view in 1 dimension. | |
| 475. |
Isometric view of rectangle will become |
| A. | parallelogram |
| B. | rhombus |
| C. | rectangle |
| D. | square |
| Answer» A. parallelogram | |
| Explanation: whatever the quadrilateral when we are drawing it in isometric views the base will make 30 degrees and other sides will tend to show up like we are watching from some particular point as in perspective view in 1 dimension. | |
| 476. |
Front view of circle is given and isometric view is to be drawn which of the following is correct procedure in drawing isometric view? |
| A. | turning the circle such that line on diameter is making 30 degrees with horizontal |
| B. | by increasing or decreasing angles between two perpendicular line on diameter at required proportions |
| C. | drawing line in diameter parallel to isometric axes |
| D. | enclosing circle in a square and aligning square to isometric axes and pointing four points on circle touching the square and joining by smooth curve. |
| Answer» D. enclosing circle in a square and aligning square to isometric axes and pointing four points on circle touching the square and joining by smooth curve. | |
| Explanation: circle will be circle even if we rotate it in angle with that plane. so to represent circle in isometric view it should be enclosed in a square and then aligning square | |
| 477. |
When an object has its one or more faces parallel to the picture plane, its perspective is called perspective also called one point perspective. |
| A. | parallel |
| B. | oblique |
| C. | vanishing |
| D. | angular |
| Answer» A. parallel | |
| Explanation: when an object has its one or more faces parallel to the picture plane, its perspective is called parallel perspective also called one point perspective as the edges converge to a single vanishing point of the parallel faces. | |
| 478. |
Vanishing points for all horizontal lines are inclined at 45 degrees to the picture plane are given special name of points. |
| A. | vanishing |
| B. | far |
| C. | distance |
| D. | distant |
| Answer» C. distance | |
| Explanation: vanishing points for all horizontal lines are inclined at 45 degrees to the picture plane are given special name of distance points on account of their definite positions. they are equidistant from the center of vision. | |
| 479. |
Which are equidistant from the center of vision? |
| A. | station point |
| B. | ground point |
| C. | distance point |
| D. | vanishing point |
| Answer» C. distance point | |
| Explanation: the distance points are equidistant from the center of vision the distance of each from the centre of vision being equal to the distance of the station point from the picture plane the perspectives of all horizontal lines inclined at 45 degrees to the picture plane converge to a distance points on the horizon line. | |
| 480. |
The perspectives of all horizontal lines inclined at degrees to the picture plane converge to a distance points on the horizon line. |
| A. | 30 |
| B. | 45 |
| C. | 60 |
| D. | 90 |
| Answer» B. 45 | |
| Explanation: the distance points are | |
| 481. |
The perspectives of all horizontal lines inclined at 45 degrees to the picture plane converge to a points on the horizon line. |
| A. | vanishing |
| B. | far |
| C. | distance |
| D. | distant |
| Answer» C. distance | |
| Explanation: the distance points are equidistant from the center of vision the distance of each from the centre of vision being equal to the distance of the station point from the picture plane the perspectives of all horizontal lines inclined at 45 degrees to the picture plane converge to a distance points on the horizon line. | |
| 482. |
The perspectives of all horizontal lines inclined at 45 degrees to the picture plane converge to a distance points on the |
| A. | ground line |
| B. | perpendicular axis |
| C. | horizon line |
| D. | center of vision |
| Answer» C. horizon line | |
| Explanation: the distance points are | |
| 483. |
The measuring line or the line of heights is the trace or the line of intersection with the picture plane, of the plane containing the point or points whose heights are to be determined. |
| A. | ground plane |
| B. | picture plane |
| C. | vertical plane |
| D. | central plane |
| Answer» C. vertical plane | |
| Explanation: the measuring line or the line of heights is the trace or the line of intersection with the picture plane, of the vertical plane containing the point or points whose heights are to be determined. | |
| 484. |
The perspective view of a circle in any type of typical position be |
| A. | circle |
| B. | ellipse |
| C. | oval |
| D. | lemniscate |
| Answer» B. ellipse | |
| Explanation: the station point in anywhere from the picture plane if a circle is placed in any angle with the ground plane in the maximum possible critical position the perspective of the circle will always be an ellipse. | |
| 485. |
The perspectives of concentric circles are not concentric |
| A. | circles |
| B. | ellipses |
| C. | spheres |
| D. | ellipsoids |
| Answer» B. ellipses | |
| Explanation: perspectives of concentric circles are not concentric ellipses. though the both circles give ellipses but inner ellipse might be closer to one of side of outer ellipse and also might be closer to only one side of outer ellipse. | |
| 486. |
Curve of any shape can be drawn in perspective by enclosing it in a |
| A. | rectangle |
| B. | cube |
| C. | cylinder |
| D. | square |
| Answer» A. rectangle | |
| Explanation: curve of any shape can be drawn in perspective by enclosing it in a | |
| 487. |
The perspective will remain same even if the station point changes. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: the position of the station point is of great important. upon its position, the general appearance of the perspective depends. hence, it should be so located as to view the object in the best manner. | |
| 488. |
The position of picture plane relative to the object is independent of a size of perspective view. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: the perspective will show the object reduced in size when it is placed behind the picture plane. if the object is | |
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