McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 201. |
If a line AB parallel to both the horizontal plane and vertical plane then the line AB is |
| A. | parallel to profile plane |
| B. | lies on profile plane |
| C. | perpendicular to profile plane |
| D. | inclined to profile plane |
| Answer» C. perpendicular to profile plane | |
| Explanation: for any line if it is parallel to two perpendicular planes then the line will definitely perpendicular to other plane perpendicular to both the previous planes. and whether the line lies on the plane or not depends on conditions given but we can’t just imagine. | |
| 202. |
A line AB of length 20 cm is placed in 1st quadrant and parallel to profile plane and the end A and B are 15, 10 cm away from the horizontal plane respectively. The length of the line in the top view is cm. |
| A. | 11.18 |
| B. | 13.2 |
| C. | 17.32 |
| D. | 19.36 |
| Answer» D. 19.36 | |
| Explanation: the distance between the projectors drawn from a and b to horizontal plane gives the length of line in top view given the line parallel to profile plane. the difference in distances from a and b to horizontal plane is 5 (15-10). given length is | |
| 203. |
A line of length 15 cm is parallel to horizontal plane and makes an angle of 30 degrees with vertical plane. The length of line in top view is cm. |
| A. | 30 |
| B. | 15 |
| C. | 12.9 |
| D. | 7.5 |
| Answer» B. 15 | |
| Explanation: given the line is parallel to horizontal plane and makes an angle of 30 degrees with vertical plane. the top view gives the actual length of the line because the top view is always the projection of objects on horizontal plane to which the line is parallel. | |
| 204. |
A line AB of length 10 cm is placed in 2nd quadrant parallel to vertical plane and 5 cm away from the vertical plane and ends are 7 cm and 4 cm from horizontal plane. The top view and front view lines apart from each other. |
| A. | true |
| B. | false |
| C. | topic 2.10 projection of straight lines parallel to plane |
| Answer» B. false | |
| Explanation: accordingly the given distances and length if the projections are drawn the front view and top view intersect with each other as for 2nd quadrant the projections of a front view and top view overlaps. | |
| 205. |
A line AB of length 15 cm is placed in 4th quadrant and parallel to profile plane and the end A and B are 8, 6 cm away from the horizontal plane respectively. The length of the line in front view is cm. |
| A. | 14.8 |
| B. | 9 |
| C. | 7 |
| D. | 2 |
| Answer» D. 2 | |
| Explanation: the difference in distances from a and b to horizontal plane is 2 (8-6) cm. and this front view of line in orthographic projection is perpendicular to the reference line as the line in projection planes is parallel to profile plane. | |
| 206. |
A line AB of length 2 m is placed in 2nd quadrant and parallel to vertical plane and the end A and B are 0.5 m and 0.3 m away from the horizontal plane respectively. The length |
| A. | 1.98 |
| B. | 1.97 |
| C. | 1.936 |
| D. | 2 |
| Answer» A. 1.98 | |
| Explanation: the distance between the projectors drawn from a and b to horizontal plane gives the length of line in top view given the line parallel to vertical plane. the difference in distances from a and b to horizontal plane is 0.2 (0.5-0.3). given length is 2 m so required length is √(22-0.22 )= 1.98m. | |
| 207. |
A line of length 30 inches is parallel to profile plane and makes an angle of 60 degrees with vertical plane. The length of line in top view is inches. |
| A. | 30 |
| B. | 15 |
| C. | 25.9 |
| D. | 51.9 |
| Answer» C. 25.9 | |
| Explanation: given the line is parallel to profile plane and makes 60 degrees with vertical plane. there will be no need for distance from profile plane. the length of line from top view will be sin(60) x length of the line= sin(60) x 30 inches =25.9 inches. | |
| 208. |
The length of line parallel to one of the plane of projection planes will show same length if view of that line is drawn on to the plane. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: the length of line parallel to one of the plane of projection planes will show same length if view of that line is drawn on to the plane because the projections on the plane to that line are parallel to other planes. | |
| 209. |
A line parallel to horizontal plane and at a distance of 10 units to it and both the end of line are 6 units away from the vertical plane. Which of the following statement is false? |
| A. | the line parallel to vertical plane |
| B. | the side view of line gives a point |
| C. | the length of line in front view is 10 units |
| D. | the length of line in top view is 6 units |
| Answer» D. the length of line in top view is 6 units | |
| Explanation: the line which is equidistance from a plane is said to be parallel to it. the line which is parallel to two perpendicular planes will be perpendicular to other perpendicular plane to the earlier planes. | |
| 210. |
A line AB of length 12 inches is perpendicular to profile plane at distance of 6 inches from vertical plane and 3 inches from horizontal plane. The distance from line to xy reference line in top view is inches. |
| A. | 6 |
| B. | 3 |
| C. | 12 |
| D. | 0 |
| Answer» A. 6 | |
| Explanation: given the line perpendicular to profile plane. top view gives the length of line and distance from the xy reference line which is the perpendicular distance from the | |
| 211. |
A line AB of length 3 m is perpendicular to vertical plane at distance of 2 m from profile plane and 0.5 m from horizontal plane. The distance from line to xy reference line in front view is m. |
| A. | 1.5 |
| B. | 0.5 |
| C. | 2 |
| D. | 3 |
| Answer» B. 0.5 | |
| Explanation: given the line perpendicular to vertical plane. front view shows as point and distance from the xy reference line and vertical reference line. the distance from horizontal plane is given in question as 0.5 m. | |
| 212. |
A line AB of length 24 cm is parallel to vertical plane and perpendicular to profile plane held at a distance of 5 cm away from horizontal plane and 6 cm away from the vertical plane. The distance from xy reference line to line AB is cm in top view. |
| A. | 6 |
| B. | 12 |
| C. | 5 |
| D. | 7.8 |
| Answer» A. 6 | |
| Explanation: asked for top view, which gives the distance from vertical plane and profile plane because the top view is parallel to horizontal plane. also given the line is perpendicular to profile plane. the distance from xy reference line to line ab will be 6 cm. | |
| 213. |
A line AB of length 24 cm is parallel to vertical plane and perpendicular to profile plane held at a distance of 5 cm away from horizontal plane and 6 cm away from the vertical plane. The distance from xy reference line to line AB is cm in front view. |
| A. | 6 |
| B. | 12 |
| C. | 5 |
| D. | 7.8 |
| Answer» C. 5 | |
| Explanation: asked for front view, which gives the distance from horizontal plane and profile plane because the front view is parallel to vertical plane. also given the line is perpendicular to profile plane. the distance from xy reference line to line ab will be 5 cm. | |
| 214. |
A line AB is on the vertical plane of projection planes, which view from the following gives the actual length of the line AB? |
| A. | front view |
| B. | top view |
| C. | side view |
| D. | isometric view |
| Answer» A. front view | |
| Explanation: any line that lie or parallel to any of plane in projection planes the true length will be found at view which drawn on to that plane that is here the line is in vertical plane so the view which fall on vertical plane gives the true length which is other than front view. | |
| 215. |
A line AB is on the horizontal plane inclined to a vertical plane at 45 degrees, which view from the following gives the actual length of the line AB? |
| A. | front view |
| B. | top view |
| C. | side view |
| D. | isometric view |
| Answer» B. top view | |
| Explanation: any line that lie or parallel to any of plane in projection planes the true length will be found at view which drawn on to that plane that is here the line is in | |
| 216. |
A line AB is on the profile plane inclined such that ends of line are 10, 12 cm away from horizontal plane, which view from the following gives the actual length of the line AB? |
| A. | front view |
| B. | top view |
| C. | side view |
| D. | isometric view |
| Answer» C. side view | |
| Explanation: any line that lie or parallel to any of plane in projection planes the true length will be found at view which drawn on to that plane that is here the line is in profile plane though it’s ends are at some distance the true length will be given at view which fall on profile plane which is side view. | |
| 217. |
A line PQ lie in both the vertical plane and profile plane the front and side views of that line coincides at vertical reference line. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: given a line present in both the planes but it is known that two perpendicular planes meet at a line which is reference line so the given line might present on that line that coincides with that line so the views also get coincide at that line. | |
| 218. |
If a line RS lie on both vertical and horizontal plane then which of the following two views coincides to give a line again? |
| A. | front, top |
| B. | top, side |
| C. | side, isometric |
| D. | isometric, front |
| Answer» A. front, top | |
| Explanation: isometric view is that the three | |
| 219. |
If a line LM lies on profile plane and horizontal plane then which of the following two views coincides to give a line again? |
| A. | front, top |
| B. | top, side |
| C. | side, isometric |
| D. | isometric, front |
| Answer» B. top, side | |
| Explanation: given the line lm is present in both the profile and horizontal planes which are perpendicular so the line will be at reference line formed between them also the line will coincide with the view of top and side. | |
| 220. |
If a line AB lies on horizontal plane and vertical plane then which of the following view gives a point? |
| A. | side view |
| B. | top view |
| C. | front view |
| D. | isometric view |
| Answer» A. side view | |
| Explanation: given the line ab is present in both the vertical and horizontal planes which are perpendicular so the line will be at xy reference line formed between them which is perpendicular to profile plane so the side view gives the point. | |
| 221. |
A line of length 55 mm lies on profile plane whose ends are at a distance of 15 mm and 20 mm to horizontal plane. What is the length in top view? |
| A. | 54.77 mm |
| B. | 5 mm |
| C. | 0 mm |
| D. | 35 mm |
| Answer» A. 54.77 mm | |
| Explanation: given the line is of length 55 | |
| 222. |
A line of length 35 mm lies on vertical plane whose ends are at a distance of 15 mm and 10 mm to profile plane. What is the length in top view? |
| A. | 0 mm |
| B. | 35 mm |
| C. | 5 mm |
| D. | 34.64 mm |
| Answer» C. 5 mm | |
| Explanation: given the line is of length 35 mm present on vertical plane and ends are at 15 and 10 mm away from a profile plane. as we imagine the projection planes we can get the top view and distance relation as given here. 15-10 =5 mm. | |
| 223. |
A line of length 12 cm lies on profile plane whose ends are at a distance of 4 cm and 5 cm to vertical plane. What is the length in top view? |
| A. | 5 cm |
| B. | 12 cm |
| C. | 1 cm |
| D. | 11.9 cm |
| Answer» C. 1 cm | |
| Explanation: given the line is of length 12 cm present on profile plane and ends are at 4 cm and 5 cm away from vertical plane. as we imagine the projection planes we can get the top view and distance relation as given here. 5-4 =1 cm. | |
| 224. |
A line of length 10 inches lies on profile plane whose ends are at a distance of 5 inches and 3 inches to vertical plane. What is the length in front view? |
| A. | 9.79 |
| B. | 2 |
| C. | 10 |
| D. | 0 |
| Answer» A. 9.79 | |
| Explanation: given the line is of length 10 inches present on profile plane and ends are at 5 and 3 inches away from vertical plane. as we imagine the projection planes we can get the front view and distance relation as given here. √(102-22 ) = 9.79 inches. | |
| 225. |
A line of length 20 cm lies on profile plane whose ends are at a distance of 5 cm and 7 cm to horizontal plane. What is the length in top view? |
| A. | 7 |
| B. | 14.8 |
| C. | 15 |
| D. | 2 |
| Answer» B. 14.8 | |
| Explanation: given the line is of length 20 cm present on profile plane and ends are at 5 and 7 cm away from horizontal plane at right angles. as we imagine the projection planes we can get the top view and distance relation as given here. √(202-(7-5)2 )= 14.8 cm. | |
| 226. |
A line of length 15 dm lies on vertical plane whose ends are at a distance of 5 dm and 7 dm to horizontal plane. What is the length in side view? |
| A. | 7 |
| B. | 14.8 |
| C. | 15 |
| D. | 2 |
| Answer» D. 2 | |
| Explanation: given the line is of length 15 dm present on vertical plane and ends are at 5 and 7 dm away from horizontal plane at right angles. as we imagine the projection planes we can get the side view and distance relation as given here. 7-5 =2 dm. | |
| 227. |
A line of length 15 cm is on vertical plane makes an angle of 50 degrees with horizontal plane. What is the length of line in side view? |
| A. | 0 cm |
| B. | 11.49 cm |
| C. | 9.6 cm |
| D. | 15 cm |
| Answer» B. 11.49 cm | |
| Explanation: given the line of 15 cm length is present on the vertical plane and making an angle of 50 degrees with horizontal plane so side view’s length will be 15 x sin (50) = | |
| 228. |
49 cm and front view will be 15 x sin (90- 50). |
| A. | 1.29 m |
| B. | 4.82 m |
| C. | 2.41 m |
| D. | 5 m |
| Answer» A. 1.29 m | |
| Explanation: given the line of 5 m length is present on the horizontal plane and making an angle of 50 degrees with profile plane so side view’s length will be 5 m x cos (75)=1.29 m and in front view, it will be 5 x sin (75). | |
| 229. |
A line of length 15 cm touching the vertical plane and perpendicular to it held at a distance of 20 cm away from horizontal plane and 5 cm away from the profile plane. Which of the following is false? |
| A. | front view will be point |
| B. | the line is parallel to horizontal and profile plane |
| C. | the length of the line in side view is 15 cm |
| D. | one end of line is on the horizontal plane |
| Answer» D. one end of line is on the horizontal plane | |
| Explanation: as with knowledge of views we can say the views from different sides and next if a line is perpendicular to one plane of projection planes it will parallel to other planes. given one end is on vertical plane so | |
| 230. |
A line of length 15 cm touching the vertical plane and perpendicular to it at a distance of 20 cm away from horizontal plane and 5 cm away from the profile plane. Which view gives the distance from line to profile plane is 5 cm? |
| A. | front view |
| B. | left side view |
| C. | top view |
| D. | right side view |
| Answer» C. top view | |
| Explanation: given a line of length 15 cm touching the vertical plane and perpendicular to it at a distance of 20 cm away from the horizontal plane and 5 cm away from the profile plane. so the view gives the distance from line to profile plane is 5 cm is top view. | |
| 231. |
A line of length 7 m touching the vertical plane and perpendicular to it at a distance of 2 m away from horizontal plane and 5 m away from the profile plane. Which view gives the distance from line to horizontal plane is 2 m? |
| A. | front view |
| B. | left side view |
| C. | top view |
| D. | right side view |
| Answer» B. left side view | |
| Explanation: given a line of length 7 m touching the vertical plane and perpendicular to it at a distance of 2 m away from horizontal plane and 5 m away from the profile plane. | |
| 232. |
A line is perpendicular to profile plane, the perpendicular distance from 1st end of the line to vertical plane is 20 cm and perpendicular distance of 2nd end of line to horizontal plane is 10 cm. What is the distance from 1st end of line to vertical plane? |
| A. | 15 cm |
| B. | 20 cm |
| C. | 10 cm |
| D. | can’t say |
| Answer» B. 20 cm | |
| Explanation: as the projection of planes are mutual perpendicular plane if a line is perpendicular to one of the planes then it would be parallel to rest of the planes that is both ends will be equidistant from plane. | |
| 233. |
A line is perpendicular to horizontal plane, the perpendicular distance from the line to vertical plane is 8 inches and perpendicular distance from the line to profile plane is 5 inches. What is the distance from the line to vertical reference line if it is viewed from front view? |
| A. | 8 inches |
| B. | 5 inches |
| C. | 3 inches |
| D. | 0 inches |
| Answer» B. 5 inches | |
| Explanation: given a line is perpendicular to horizontal plane, the perpendicular distance from the line to vertical plane is 8 inches and perpendicular distance from the line to profile plane is 5 inches. so the distance from the line to vertical reference line if it is viewed from front view is 5 inches. | |
| 234. |
A line is perpendicular to profile plane, the perpendicular distance from the line to vertical plane is 10 cm and perpendicular distance from the line to horizontal plane is 5 cm. What is the distance from the line to vertical reference line if it is viewed from a side view? |
| A. | 10 cm |
| B. | 5 cm |
| C. | 7.5 cm |
| D. | 0 cm |
| Answer» B. 5 cm | |
| Explanation: given the line is perpendicular to profile plane, the perpendicular distance from the line to vertical plane is 10 cm and | |
| 235. |
A line of 12 cm length is perpendicular to profile plane and the least distance from this line to profile plane is 6 cm. This is at a distance of 4 cm from the vertical plane and 5 cm from the horizontal plane. What is distance from the point on line far away from the profile plane to profile plane? |
| A. | 12 cm |
| B. | 9 cm |
| C. | 18 cm |
| D. | 6 cm |
| Answer» C. 18 cm | |
| Explanation: given a line of 12 cm length is perpendicular to profile plane and the least distance from this line to profile plane is 6 cm. this is at a distance of 4 cm from vertical plane and 5 cm from the horizontal plane. so the distance from the point on line far away from the profile plane to profile plane is 18 cm. | |
| 236. |
A line can’t be perpendicular to two perpendicular planes at the same time. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: plane is collection of infinite lines the lines present in it will parallel to all the other lines in it. perpendicular plane is such that the lines present in it will perpendicular to all the lines present in perpendicular plane. so a line perpendicular to one plane will can’t be perpendicular to perpendicular plane. | |
| 237. |
A line of 12 cm length is perpendicular to profile plane and the least distance from this line to profile plane is 6 cm. This is at a distance of 4 cm from vertical plane and 5 cm from the horizontal plane. What is distance from the line to xy reference line in top view? |
| A. | 6 cm |
| B. | 4 cm |
| C. | 5 cm |
| D. | 0 cm |
| Answer» B. 4 cm | |
| Explanation: given a line of 12 cm length is perpendicular to profile plane and the least distance from this line to profile plane is 6 cm. this is at a distance of 4 cm from vertical plane and 5 cm from the horizontal plane. so the distance from the line to xy reference line in top view is 4 cm. | |
| 238. |
A line of 12 cm length is perpendicular to profile plane and the least distance from this line to profile plane is 6 cm. This is at a distance of 4 cm from vertical plane and 5 cm from the horizontal plane. What is the distance from the line to xy reference line in front view? |
| A. | 0 cm |
| B. | 6 cm |
| C. | 4 cm |
| D. | 5 cm |
| Answer» D. 5 cm | |
| Explanation: given a line of 12 cm length is perpendicular to a profile plane and the least distance from this line to profile plane is 6 cm. this is at a distance of 4 cm from vertical plane and 5 cm from the horizontal plane. so the distance from the line to xy reference line in front view is 5 cm. | |
| 239. |
A line is in vertical plane and perpendicular to horizontal plane at a distance of 10 cm from horizontal plane and 5 cm from profile plane. What is the distance from vertical reference line to line? |
| A. | 10 cm |
| B. | 0 cm |
| C. | 5 cm |
| D. | 7.5 cm |
| Answer» C. 5 cm | |
| Explanation: given the line is in vertical plane and perpendicular to a horizontal plane | |
| 240. |
A line is in vertical plane and perpendicular to horizontal plane at a distance of 10 cm from horizontal and 5 cm from profile plane. What is the distance from xy reference line to line in top view? |
| A. | 10 cm |
| B. | 5 cm |
| C. | 6 cm |
| D. | 0 cm |
| Answer» D. 0 cm | |
| Explanation: top view gives the distance from object to xy reference line and object to reference line between the profile plane and horizontal plane. but here the line is placed vertical to horizontal plane so the view will be point and also the line is in vertical plane to distance will be zero. | |
| 241. |
If a line is perpendicular to one of the projection planes and lies on other two planes then the line will lies on reference line accordingly. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: if a line is perpendicular to one of the projection planes and lies on other two planes then the line will lies on reference line accordingly. as any line lies on two planes it will definitely passes through the reference line and so which is perpendicular to other plane. | |
| 242. |
A line of length 5 inches parallel to horizontal plane and inclined to vertical plane with an angle of 35 degrees. What is the length in side view? |
| A. | 7.28 inches |
| B. | 2.86 inches |
| C. | 4.09 inches |
| D. | 5 inches |
| Answer» B. 2.86 inches | |
| Explanation: here accordingly the conditions given that line is parallel to horizontal plane and inclined to vertical plane at 35 degrees the side view’s length is the sine of actual length. 5 inches x sin (35) = 2.86 inches. | |
| 243. |
A line of length 5 dm is parallel to vertical plane and inclined to horizontal plane with an angle of 65 degrees. What is the length in side view? |
| A. | 2.11 dm |
| B. | 4.53 dm |
| C. | 5 dm |
| D. | 0 dm |
| Answer» B. 4.53 dm | |
| Explanation: here accordingly the conditions given that line is parallel to vertical plane and inclined to horizontal plane at 55 degrees the top view’s length is the cosine of actual length. 5 dm x sin (65) = 4.53 dm. | |
| 244. |
A line of length 15 cm is parallel to horizontal plane and 10 cm away from it and making an angle of 45 degrees with profile plane. The distance from line to xy reference line in front view will be |
| A. | 15 cm |
| B. | 10 cm |
| C. | 7.07 cm |
| D. | 10.06 cm |
| Answer» B. 10 cm | |
| Explanation: given line is of any length but we are asked distance from line to xy reference line in front view which is the distance from the line to horizontal plane even if the line may inclined to other planes. | |
| 245. |
A line of length 15 cm is parallel to horizontal plane and vertical plane and 10 cm away from vertical plane. The distance from line to vertical reference line in side view will be |
| A. | 10 cm |
| B. | 15 cm |
| C. | 0 cm |
| D. | 10.06 cm |
| Answer» A. 10 cm | |
| Explanation: given line is of any length but given it is parallel to horizontal plane and vertical plane and 10 cm away from the vertical plane so as the side view gives the distance from horizontal plane and vertical plane here the distance is 10 cm. | |
| 246. |
A line of length 12 inches is parallel to vertical plane and 5 inches away from it and ends of it is 3, 4 inches away from the profile plane. The length of line in top view will be |
| A. | 1 inch |
| B. | 3 inches |
| C. | 7 inches |
| D. | 5 inches |
| Answer» A. 1 inch | |
| Explanation: the line which is parallel to vertical has ends which are 3, 4 inches from profile plane and asked for top view so the difference between the distances of ends to profile plane gives the length in top view 4- 3=1 inches. | |
| 247. |
A line of length 12 inches is parallel to vertical plane and 5 inches away from it and ends of it is 3, 4 inches away from the profile plane. The length of line in top view will be |
| A. | 11.61 inches |
| B. | 11.31 inches |
| C. | 11.95 inches |
| D. | 30.37 inches |
| Answer» C. 11.95 inches | |
| Explanation: given a line of length 12 inches | |
| 248. |
A line of length 12 inches is parallel to vertical plane and 5 inches away from it and making an angle of 5 degrees with profile plane. The distance from line to xy reference line in top view will be inches. |
| A. | 5 inches |
| B. | 12 inches |
| C. | 4.9 inches |
| D. | 0.43 inches |
| Answer» A. 5 inches | |
| Explanation: given line is of any length but we are asked to find the distance from line to xy reference line in top view which is the distance from the line to vertical plane even if the line may inclined to other planes. | |
| 249. |
A line of length 10 cm at first lied on the horizontal plane parallel to vertical plane and then keeping one of its ends fixed turned 30 degrees with respect to vertical plane and then turned 45 degrees with respect to horizontal plane. What is the length of line in top view? |
| A. | 5 cm |
| B. | 7.07 cm |
| C. | 3.53 cm |
| D. | 10 cm |
| Answer» B. 7.07 cm | |
| Explanation: first imagine the line in horizontal plane parallel to vertical plane as here we are asked to find the top view’s length even if the line is rotated within the | |
| 250. |
A line of length 10 cm at first lied on the horizontal plane parallel to vertical plane and then keeping one of its ends fixed turned 30 degrees with respect to vertical plane and then turned 45 degrees with respect to horizontal plane. What is the length of line in front view? |
| A. | 8.66 cm |
| B. | 7.07 cm |
| C. | 3.53 cm |
| D. | 6.12 cm |
| Answer» A. 8.66 cm | |
| Explanation: first imagine the line in horizontal plane parallel to vertical plane as here we are asked to find the front view’s length even if the line is rotated with respect to horizontal plane the line length will not change and then rotated with respect to the vertical plane which is calculated as follows 10 x cos (30) =8.66 cm. | |
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