Description : An angle of 45° with a chain line may be set out with (A) Optical square (B) Open cross staff (C) French cross staff (D) Prismatic square
Last Answer : (C) French cross staff
Description : Prolongation of chain line across an obstruction in chain surveying, is done by (A) Making angular measurements (B) Drawing perpendiculars with a chain (C) Solution of triangles (D) All the above
Last Answer : (B) Drawing perpendiculars with a chain
Description : Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following (A) Chain surveying (B) Compass surveying (C) Plan table surveying (D) Tacheometric surveying
Last Answer : (C) Plan table surveying
Description : The method generally preferred to for contouring an undulating area, is (A) Chain surveying (B) Plane table surveying (C) Tacheometrical surveying (D) Compass surveying
Last Answer : (C) Tacheometrical surveying
Description : To avoid large centering error with very short legs, observations are generally made (A) To chain pins (B) By using optical system for centering the theodolite (C) To a target fixed on theodolite tripod on which theodolite may be fitted easily (D) All the above
Last Answer : (C) To a target fixed on theodolite tripod on which theodolite may be fitted easily
Description : The type of surveying which requires least office work is (A) Tachometry (B) Trigonometrical levelling (C) Plane table surveying (D) Theodolite surveying
Last Answer : (C) Plane table surveying
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 Reconnaissance survey. (a) Prismatic compass (b) Dumpy level * (c) Aneroid Barometer (d) Pedometer
Last Answer : (b) Dumpy level *
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 : The laying of sewers is done with A. Magnetic compass B. Theodolite C. Level D. Clinometer
Last Answer : ANS: C
Description : Mention different sources of errors in theodolite surveying.
Last Answer : Sources of errors in theodolite surveying:- i) Instrumental errors1) Non adjustment of plate bubble. 2) Line of collimation not being perpendicular to horizontal axis. 3) Line of collimation ... causes error due to irregular refraction. 2) High winds cause vibration in instrument.
Description : For taking offsets with an optical square on the right hand side of the chain line, it is held (A) By right hand upside down (B) By left hand upright (C) By right hand upright (D) By left hand upside down
Last Answer : (B) By left hand upright
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 : Enlist different errors in compass surveying.
Last Answer : Various errors in compass surveying are classified asi) Instrumental errors. ii) Personal errors or observational errors iii) Errors caused due to external errors (natural errors) i) ... magnetic declination. c) Local attraction due to proximity of magnetic substances or magnetic field.
Description : Cross hairs in surveying telescopes, are fitted (A) In the objective glass (B) At the centre of the telescope (C) At the optical centre of the eye piece (D) In front of the eye piece
Last Answer : (D) In front of the eye piece
Description : In a theodolite the line passing through the intersection of the horizontal and vertical cross hairs and the optical centre of the object glass and its continuation, is known as (a) Horizontal axis (b) Vertical axis (c) Line of collination (d) Line of sight (e) Either of c or d above*
Last Answer : e) Either of c or d above*
Description : Check lines (or proof lines) in Chain Surveying, are essentially required (A) To plot the chain lines (B) To plot the offsets (C) To indicate the accuracy of the survey work (D) To increase the out-turn
Last Answer : (C) To indicate the accuracy of the survey work
Description : In chain surveying tie lines are primarily provided (A) To check the accuracy of the survey (B) To take offsets for detail survey (C) To avoid long offsets from chain lines (D) To increase the number of chain lines
Last Answer : (C) To avoid long offsets from chain lines
Description : The accuracy of measurement in chain surveying, does not depend upon (A) Length of the offset (B) Scale of the plotting (C) Importance of the features (D) General layout of the chain lines
Last Answer : (D) General layout of the chain lines
Description : The additional lines which are measured to show the correctness of the chain surveying are called: (A) Check clines (B) Proof lines (C) Tie lines (D) All of these
Last Answer : (D) All of these
Description : The distances AC and BC are measured from two fixed points A and B whose distance AB is known. The point C is plotted by intersection. This method is generally adopted in (A) Chain surveying (B) Traverse method of surveys (C) Triangulation (D) None of these
Last Answer : (A) Chain surveying
Description : In chain surveying field work is limited to (A) Linear measurements only (B) Angular measurements only (C) Both linear and angular measurements (D) All the above
Last Answer : (A) Linear measurements only
Description : Chain surveying is well adopted for (A) Small areas in open ground (B) Small areas with crowded details (C) Large areas with simple details (D) Large areas with difficult details
Last Answer : (A) Small areas in open ground
Description : Consider the following pre-conditions for correct use of a theodolite: 1. The vertical axis need not be perpendicular to the plane of the plate level bubble. 2. The line of sight must be perpendicular to the horizontal axis. 3. The axis of ... ? (a) 1, 2, 3 & 4 (b) 2 only (c) 3 only (d) 1 & 4 only
Last Answer : (b) 2 only
Description : The main principle of surveying is to work (A) From part to the whole (B) From whole to the part (C) From higher level to the lower level (D) From lower level to higher level
Last Answer : (B) From whole to the part
Description : Explain principle of chain surveying
Last Answer : 1) Principle of chain surveying is triangulation 2) Triangulation consists of frame work of triangles. The whole area is divided into network of triangles. 3) A triangle is the only simple plane ... to be adopted depends upon the shape & configuration of the ground & the natural obstacles.
Description : State any four precautions to be taken while selecting stations for chain surveying.
Last Answer : Following are the precautions to be taken while selecting station for chain surveying. 1) As far as possible the survey work should be based upon the basic principle of surveying i.e. working from whole to ... level ground. 9) The survey lines should run as far as possible nearer to object.
Description : A theodolite is said to be in perfect adjustment if (A) Rotation axis is vertical to the transit axis (B) Transit axis is perpendicular to line of collimation (C) Line of collimation sweeps out a vertical plane while the telescope is elevated or depressed (D) All the above
Description : While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates (A) The rotation axis is vertical (B) The trunnion ... (C) The line of collimation is perpendicular to vertical axis (D) None of the above
Last Answer : (A) The rotation axis is vertical
Description : Pick up the correct statement from the following: (A) To locate a gross error in bearing that may exist in controlled theodolite traverse, we may plot the traverse from each end. The traverse station having ... the same as that of the leg in which the gross error consists (D) All the above
Description : Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations? (A) Measuring angle and distance from one transit station (B) ... at one station and distance from other (D) Measuring distance from two points on traverse line
Last Answer : (B) Measuring angles to the point from at least two stations
Description : The limiting length of an offset does not depend upon (A) Accuracy of the work (B) Method of setting out perpendiculars (C) Scale of plotting (D) Indefinite features to be surveyed
Last Answer : (D) Indefinite features to be surveyed
Description : Draw a line segment QR = 5 cm. Construct perpendiculars at point Q and R to it. -Maths 9th
Last Answer : 1.Draw a line segment QR = 5 cm. 2.With Q as centre, construct an angle of 90° and let this line through Q is QX. 3. With R as centre, construct an angle of 90° and let this line through R is RY. Yes, the perpendicular lines QX and- RY are parallel.
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 : Explain Procedure for chain and compass traversing.
Last Answer : Chain and compass traversing : 1) Reconnaissance of the area to be surveyed is done. 2) Traverse stations are fixed. 3) The F.B and B.B of the traverse are measured by prismatic compass and ... occur when the traverse is plotted. 6) This error is adjusted graphically by using Bowditch Rule'.
Description : The carryover factor in a prismatic member whose far end is fixed is (A) 0 (B) 1/2 (C) 3/4 (D) 1
Last Answer : (B) 1/2
Description : The three moments equation is applicable only when (A) The beam is prismatic (B) There is no settlement of supports (C) There is no discontinuity such as hinges within the span (D) The spans are equal
Last Answer : (C) There is no discontinuity such as hinges within the span