Description : The survey instrument used for reconnaissance survey (a) Theodelite & Dumpty level (b) Prismatic compass & Aneriod barometer* (c) All the above (d) None of them
Last Answer : (b) Prismatic compass & Aneriod barometer*
Description : Which of the instruments is not used in Preliminary survey. (a) Theodelite (b) Tacheometer (c) Dumpy level (d) Plane table (e) None of them*
Last Answer : (e) None of them*
Description : A detailed project report of the proposed railway line is made after (a) Preliminary survey (b) Reconnaissance survey (c) Final location survey* (d) Traffic survey
Last Answer : (c) Final location survey*
Description : The purpose of reconnaissance survey (a) To determine technical fenibility of the line* (b) To assess whether such a line is required or not (c) To decide the final alignment of the railway line (d) None of the above
Last Answer : (a) To determine technical fenibility of the line*
Description : The project report of the reconnaissance survey should be accompanied by Index map area at a scale of 1 cm = ---- km. (a) 2.5 km* (b) 5.0 km (c) 10.0 km (d) 15.0 km (e) 20.0 km
Last Answer : (a) 2.5 km*
Description : The project report of the reconnaissance survey should be accompanied by a map of the area at a scale of 1 cm= --- km. (a) 2.5 km (b) 5.0 km (c) 10.0 km (d) 15.0 km (e) 20.0 km*
Last Answer : (e) 20.0 km*
Description : Investigation for important bridges may be carried out in which stage a) Technical feasibility study (reconnaissance survey) b) Techno-economic feasibility study (preliminary engineering survey) c) Detailed survey and project report stage (final location survey) d) All the above *
Last Answer : d) All the above
Description : Dumpy level is most suitable when (a) The instrument is to be shifted frequently (b) Fly leveling is being done over long distance (c) Many readings are to be taken from a single setting of the instrument* (d) All of the above
Last Answer : (c) Many readings are to be taken from a single setting of the instrument*
Description : Which of these instruments were not working in Dakota? a) Compass and Radio b) Speedometer and Barometer c) Microphone and Gear d) Lights and Engine
Last Answer : a) Compass and Radio
Description : Distance between two points is measured by (a) Pacing (b) Pedometer (c) Passometer (d) Chaining (e) All the above*
Last Answer : (e) All the above*
Description : Which liquid is used in an aneroid barometer? A. Mercury B. Alcohol C. Water D. None (Answer)
Last Answer : D. None (Answer)
Description : What pressure measuring device consists of a coiled hollow tube that tends to straighten out when the tube is subjected to an internal pressure? A. Aneroid B. Manometer C. Bourdon pressure gage D. Barometer
Last Answer : Bourdon pressure gage
Description : The instrument used to measure pressure (1) Anemometer (2) Aneroid Barometer (3) Hygrometer (4) Thermometer
Last Answer : Aneroid Barometer
Description : In chain surveying, perpendiculars to the chain line are set out by (A) A theodolite (B) A prismatic compass (C) A level (D) An optical square
Last Answer : (D) An optical square
Description : The zero of the graduated circle of a prismatic compass is located at (A) North end (B) East end (C) South end (D) West end
Last Answer : (C) South end
Description : Prismatic compass is considered more accurate than a surveyor's compass, because (A) It is provided with a better magnetic needle (B) It is provided with a sliding glass in the object vane ( ... whole circle bearings (D) It is provided with a prism to facilitate reading of its graduated circle
Last Answer : (D) It is provided with a prism to facilitate reading of its graduated circle
Description : In a perfect prismatic compass (A) Magnetic axis and geometric axis of the needle coincide (B) Ends of the needle and pivot are in same vertical and horizontal planes (C) Pivot is vertically over the centre of the graduated circle (D) All the above
Last Answer : (D) All the above
Description : Which one of the following statements is not correct ? (a) A surveyor's compass has two sight vanes (b) A prismatic compass has an object vane and an eye vane (c) A trough compass ... table (d) In a prismatic compass the graduations on the aluminimum disc rotate and the index remains stationary
Last Answer : (a) A surveyor’s compass has two sight vanes
Description : List any eight component parts of prismatic compass with their function in brief.
Last Answer : Component parts of compass with their function. Sr.No Component Function 1 Circular metal box To protect needle and pivot. 2 Steel pivot To carry magnetic ... prism to eye sight of observer 14 Magnetic needle To obtain the north direction.
Description : Explain the temporary adjustments of prismatic compass.
Last Answer : Temporary Adjustments of Prismatic Compass 1. Fixing the compass to the tripod The compass is fixed on a tripod by rotating screw head of tripod stand. 2. Centering the compass The prismatic compass ... prism is moved using focusing stud so that readings on graduated ring will be seen clearly.
Description : Why zero is marked at south end on a graduated circle of prismatic compass?
Last Answer : As bearing of any line is measured with respective north direction, while observing north direction, reading should be 00 0'. Therefore when object vane is bisecting north direction, at the same ... get bearings with respective north direction always, zero is marked at south end of magnetic needle.
Description : State temporary adjustments of prismatic compass
Last Answer : a) Setting the prismatic compass over prefixed survey station b) Centering the compass over nail point of station using plumb bob c) Leveling of compass in horizontal plane using level tube d) Focusing of prism by raising and lowering the focussing stud
Description : Write the functions of the following components of prismatic compass i) Prism, ii) Lifting pin, iii) Prism cap, iv) Agate cap
Last Answer : i) Prism: Reading printed on horizontal face of compass ring can be read from vertical position ii) Lifting pin: When the instrument not in use the sight vane passes against the lifting pin which lift ... piece of hard glass provided on top of pivoted point, to reduce wear and tear of the point
Description : State any eight component parts with its functions of prismatic compass.
Last Answer : Component parts of prismatic compass are as follows. 1. Break pin - It is used to stop the oscillations of aluminum ring. 2. Lifting pin - It lifts the magnetic needle when sight vane is folded. ... and sighting vane when the compass is not in use to protect the compass from dirt, dust etc.
Description : State the meaning of local attraction and state its effect on prismatic compass and how it taken care of.
Last Answer : Local attraction: It is the deviation or deflection of magnetic needle from its normal position under influence of external magnetic forces is called as local attraction. Effect on prismatic compass: ... compass. 3) If local attraction still persists, it is corrected by mathematical calculation.
Description : Draw a neat sketch of prismatic compass and label its component parts
Last Answer : Sketch of prismatic compass and label its component parts
Description : Draw labeled sketch of prismatic compass.
Last Answer : Sketch of prismatic compass :
Description : State the function of reflecting mirror in prismatic compass.
Last Answer : Function of reflecting mirror is to get image of an object located above or below the instrument level while bisection.
Description : The first stage of deciding the alignment of a hill road, is (A) Reconnaissance (B) Detailed survey (C) Trace-out (D) Preliminary survey
Last Answer : Answer: Option A
Description : Reconnaissance is best done with the help of (A) Aerial photographic survey (B) Cadastral surveys (C) Topographical surveys (D) Triangulation surveys
Description : The instrument used for accurate centering in plane table survey is (A) Spirit level (B) Alidade (C) Plumbing fork (D) Trough compass
Last Answer : (C) Plumbing fork
Description : Survey of the major projects is done by (a) Chief Engineer (b) Chief Administrative Officer (CAO) construction* (c) Divisional Railway Manager (d) Railway Board
Last Answer : (b) Chief Administrative Officer (CAO) construction*
Description : Traffic survey is done to find out (a) The most promising route for the railway in the area (b) The possible traffic the railway line will carry (c) Standard of railway line to be followed (d) All the above*
Last Answer : d) All the above*
Description : The project report of final location survey gives tabulated statement of the following (a) Curve abstract (b) Gradient abstract (c) Bridge abstract (d) Important bridges (e) Station machinery (f) Stations and stations sites (g) All the above*
Last Answer : g) All the above*
Description : While doing final location survey, the centre line is fully marked with pegs at --- metre distance (a) 10m (b) 20m* (c) 30m (d) 50m
Last Answer : (b) 20m*
Description : Which of the following survey are required to be done before the construction of new railway line. (a) Traffic survey (b) Reconnaessarice survey (c) Preliminary survey (d) Final location survey (e) All the above
Last Answer : e) All the above
Description : Susy is traveling by ship from south of the equator to the north. She has a nice little cabin with a bathroom, but no window. Sally has no compass nor other instruments. Just the general luggage one ... with anyone, Susy will be able to tell when the ship has crossed the equator. How? -Riddles
Last Answer : Susy can fill the sink and watch it drain. When the water reverses direction when going down the drain, she will know they have crossed the equator.
Description : List any four methods of plotting a compass traverse survey & explain any one in brief. Also state the meaning of adjustment of closing error of traverse.
Last Answer : Methods of plotting compass traverse are: 1. By parallel meridian through each station. 2. By included angle. 3. By paper protractor. 4. By rectangular co-ordinates. 5. ... . 5. Finally join new points to get corrected traverse ABCDEA after graphical adjustment of closing error.
Description : State any four sources of errors in compass survey
Last Answer : Following are the sources of errors in compass survey1. Instrumental survey- a. Needle may not be perfectly straight and might not be balanced properly over the station. b. Graduations of the rings ... substances near the station. b. Magnetic field may vary on account of some natural causes.
Description : Describe in brief errors in compass survey.
Last Answer : Errors in Compass Surveying. The errors are classified as: 1. Instrumental errors. 2. Personal or Observational errors. 3. Errors due to External Influences (Natural errors etc.). (1 ... in magnetic declination. (iii) Local attraction due to proximity of electric lines, steel structures etc.
Description : State the principle of compass survey.
Last Answer : The principle of compass survey is traversing, which involves a series of connected survey lines (may be open or closed) whose lengths and bearing are measured by linear and angular measuring instruments.
Description : A dumpy level was set up at the midpoint between two pegs A and B, 50 m apart and the staff readings at and were 1.22 and 1.06. With the level set up at , the readings at and were 1.55 and ... upwards (B) 0.04 m inclined downwards (C) 0.04 m inclined upward (D) None of these
Last Answer : (B) 0.04 m inclined downwards
Description : A dumpy level was set up at mid-point between pegs A and B, 80 m apart and the staff readings were 1.32 and 1.56. When the level was set up at a point 10 m from A on BA produced, the staff readings obtained at A ... this set up at S should be (A) 1.435 (B) 1.345 (C) 1.425 (D) None of these
Last Answer : (B) 1.345
Description : Dumpy level is most suitable when (A) The instrument is to be shifted frequently (B) Fly levelling is being done over long distance (C) Many readings are to be taken from a single setting of the instrument (D) All of the above
Last Answer : (C) Many readings are to be taken from a single setting of the instrument
Description : A dumpy level is set up with its eye-piece vertically over a peg . The height from the top of peg to the centre of the eye-piece is 1.540 m and the reading on peg is 0.705 m. The level is then setup over . The height ... in level between and is (A) 2.900 m (B) 3.030 m (C) 0.770 m (D) 0.785 m
Last Answer : (C) 0.770 m
Description : Which one of the following statements is not correc t? (a) Parallax error is eliminated when there is no change in the staff reading when eye is moved up and down (b) The objective lens is ... (d) The eyepiece need not be adjusted after the first set up when the same surveyor is taking readings
Last Answer : (b) The objective lens is to be focused towards a white or bright background for clear visibility of cross-hairs
Description : State the adjustment of dumpy level on field.
Last Answer : Adjustment of dumpy level on field: I. Setting up the level. i. The level fixed on tripod. ii. The legs of tripod stand are well spread so that the level will remain stable on tripod. ... screw till the image is distinct and clear. The cross hair on the diaphragm should also be seen clearly.
Description : Explain temporary adjustment of dumpy level.
Last Answer : Temporary adjustment of dumpy level: I. Setting up the level. i. The level fixed on tripod. ii. The legs of tripod stand are well spread so that the level will remain stable on tripod. ... screw till the image is distinct and clear. The cross hair on the diaphragm should also be seen clearly.
Description : State the fundamental axes and mention their relationship for a dumpy level.
Last Answer : Fundamental axis of dumpy level are as follows; i) The vertical axis ii) The axis of bubble tube iii) The line of collimation iv) The axis of the telescope Relationship between ... iii) Axis of telescope and line of collimation should coincide when dumpy level is correctly leveled.
Description : Draw a sketch and explain how to find height of chajja or slab using dumpy level.
Last Answer : Explanation : 1. First the back sight reading is taken on floor level whose RL is known to us; from which RL of instrument axis can be find out by adding RL of BM and BS reading. 2. Now ... staff reading. 4. Finally height of chajja is calculated as RL of slab bottom - RL of floor top.