Surveying Questions and Answers – Plane Table Surveying Accessories

This set of Surveying Multiple Choice Questions & Answers (MCQs) focuses on “Plane Table Surveying Accessories”.

1. Which of the following does not belong to the instruments of plane table?
a) Spirit level
b) Plumb bob
c) Compass
d) Theodolite
View Answer

Answer: d
Explanation: Spirit level is used for levelling the table at the station point. Plumb bob is used to transfer the point in sheet to the ground. Compass is used to indicate the magnetic north. Theodolite is not used in this case as the entire process is done manually without any instrumental usage.

2. In plane table surveying, plotting and recording of values are done simultaneously.
a) True
b) False
View Answer

Answer: a
Explanation: Plane table surveying is a graphical method, in which the field observations and plotting process is done simultaneously. It involves making a map in the field while the ground can be seen by the topographer and without intermediate steps of recording in field notes.

3. What are the dimensions of Johnson table?
a) 60*45 cm
b) 45*60 cm
c) 40*60 cm
d) 45*65 cm
View Answer

Answer: b
Explanation: The Johnson board usually consists of 45*60 cm dimension, which is used while doing important field works which needs precise values.
advertisement
advertisement

4. For obtaining high precision values, which among the following is used?
a) Wooden table
b) Johnson table
c) Coast survey table
d) Traverse table
View Answer

Answer: c
Explanation: Coast survey table can be able to obtain more precise values than the remaining plane tables. Due to more accuracy in levelling, the ability of producing precise values increases.

5. Alidade is used for___________
a) Sighting
b) Levelling
c) Transferring point to ground
d) Drawing lines
View Answer

Answer: a
Explanation: The presence of eye vane of object vane allows the alidade to bisect the required points which are near by the station.
Sanfoundry Certification Contest of the Month is Live. 100+ Subjects. Participate Now!

6. Orientation of table involves which among the following?
a) Traversing
b) Fore sighting
c) Back sighting
d) Measuring bearings
View Answer

Answer: c
Explanation: Orientation by back sighting is a process that involves setting up of the plane table when there is no possibility over the station mark.

7. Orientation by trough compass is done for obtaining precise values.
a) True
b) False
View Answer

Answer: b
Explanation: Orientation by trough compass is low accurate method which is done when speed of the work is more important than obtaining accurate values. Orientation by means of back sighting involves in obtaining more precise values.
advertisement

8. Which of the following indicates the correct set of alidade?
a) Plain, reverse
b) Complex, telescopic
c) Plain, theodolite
d) Plain, telescopic
View Answer

Answer: d
Explanation: In general, two types of alidades are used. They include plain, telescopic alidades. Now-a-days telescopic alidade is fitted on the plane table which is making the work from complex to simple.

9. By plotting and recording values simultaneously, there is a possibility to occur more errors.
a) True
b) False
View Answer

Answer: a
Explanation: It might be possible to note the wrong value while processing simultaneously, but it is one of the most accurate methods which gives the best output.
advertisement

10. In which of the following cases, orientation by back sighting is used?
a) When approximate levelling is required
b) When second point is available for orientation
c) When it is not possible to set instrument over station mark
d) When speed is important than accuracy
View Answer

Answer: c
Explanation: Orientation by back sighting is used when it is not possible to set instruments over station mark and also for obtaining more precise and accurate values.

Sanfoundry Global Education & Learning Series – Surveying.

To practice all areas of Surveying, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

advertisement
advertisement
Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & discussions at Telegram SanfoundryClasses.