In a precision traverse, included angles are measured by setting the vernier
(A) To read zero exactly on back station
(B) To read 5° exactly on back station
(C) Somewhere near zero and reading both verniers on back station
(D) All the above
Description : In precision theodolite traverse if included angles are read twice and the mean reading accepted using both verniers having a least count of 30". Assuming the instrument to be in perfect adjustment, linear measurements correct to 6 mm per ... legs) (A) 50" n (B) 30" n (C) 60" n (D) None of these
Last Answer : (A) 50" n
Description : The included angles of a theodolite traverse, are generally measured (A) Clockwise from the forward station (B) Anti-clockwise from the back station (C) Anti-clockwise from the forward station (D) Clockwise from the back station
Last Answer : (D) Clockwise from the back station
Description : Accurate measurement of deflection angles with a transit not properly adjusted may be made by (A) Setting the Vernier A at zero at back station and then plunging the telescope (B) Setting the ... back sights one with the telescope normal and the other with telescope inverted (D) None of these
Last Answer : (C) Taking two back sights one with the telescope normal and the other with telescope inverted
Description : Which one of the following statements is correct? (A) When the axes of rotation of the graduated circle and the verniers are not coincident, the instrument possesses eccentricity (B) The mean of the ... Vernier may be used if the readings of two verniers differ by a constant (D) All the above
Last Answer : (D) All the above
Description : A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back sight on the preceding transit station taken and transit is rotated about its vertical axis. The vernier ... (C) Back bearing of the forward line (D) Equal to 360°-azimuth of the forward line
Last Answer : (A) Azimuth of the forward line
Description : The most reliable method of plotting a theodolite traverse, is (A) By consecutive co-ordinates of each station (B) By independent co-ordinates of each station (C) By plotting included angles and scaling off each traverse leg (D) By the tangent method of plotting
Last Answer : (B) By independent co-ordinates of each station
Description : The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the Vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto (A) 5" (B) 10" (C) 15" (D) 20"
Last Answer : (D) 20"
Description : If deflection angles are measured in a closed traverse, the difference between the sum of the right-hand and that of the left hand angles should be equal to (A) 0° (B) 90° (C) 180° (D) 360°
Last Answer : (D) 360°
Description : Angles to a given pivot station observed from a number of traverse stations when plotted, the lines to the pivot station intersect at a common point (A) Angular measurements are correct and ... plotting of traverse (D) Angular and linear measurements and also plotting of the traverse are correct
Last Answer : (D) Angular and linear measurements and also plotting of the traverse are correct
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 : An angle of deflection right, may be directly obtained by setting the instrument to read (A) Zero on back station (B) 180° on back station (C) 90° (D) 270° on back station
Last Answer : (A) Zero on back station
Description : Under ordinary conditions, the precision of a theodolite traverse is affected by (A) Systematic angular errors (B) Accidental linear errors (C) Systematic linear errors (D) Accidental angular errors
Last Answer : (C) Systematic linear errors
Description : The magnetic heading reference unit has a precision rate of: a. 1°/min b. 2°/min c. 5°/min d. 3°/min
Last Answer : b. 2°/min
Description : You have to observe an included angle with better accuracy than what is achievable by a vernier, you will prefer the method of (A) Repetition (B) Reiteration (C) Double observations (D) Exactness
Last Answer : (A) Repetition
Description : A traverse deflection angle is (A) Less than 90° (B) More than 90° but less than 180° (C) The difference between the included angle and 180° (D) The difference between 360° and the included angle
Last Answer : (C) The difference between the included angle and 180°
Description : The angle between the prolongation of the preceding line and the forward line of a traverse is called (A) Deflection angle (B) Included angle (C) Direct angle (D) None of the above
Last Answer : (A) Deflection angle
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 : 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 statements is incorrect? (A) Error due to refraction may not be completely eliminated by reciprocal levelling (B) Tilting levels are commonly used for precision work (C) The last reading of levelling is always a foresight (D) All of the above statements are incorrect
Last Answer : (D) All of the above statements are incorrect
Description : Which of the following statements about ethene, C2H4, is incorrect? (a) The H–C–H bond angles are approximately 109.5°. (b) There is a total of five sigma bonds. (c) The carbon atoms are sp2 hybridized. (d) The H–C–H bond angles are approximately 120°.
Last Answer : The H–C–H bond angles are approximately 109.5°.
Description : Which of following statements is false about propane? (a) all bond angles are 109.5° (b) each carbon is sp3 hybridized (c) the compound is combustible (d) the compound undergoes polymerization to give polypropylene.
Last Answer : the compound undergoes polymerization to give polypropylene.
Description : The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known (A) Balancing the sights (B) Balancing the departures (C) Balancing the latitudes (D) Balancing the traverse
Last Answer : (D) Balancing the traverse
Description : A ground station is operating to a geostationary satellite at a 5° angle of elevation. Calculate the round-trip time between ground station and satellite. A. 275 s B. 275 ms C. 137.5 s D. 137.5 ms
Last Answer : B. 275 ms
Description : With neat sketch, explain the included angle method of plotting compass traverse.
Last Answer : 1. Calculate all included angles of the traverse from observed bearings of the lines. e.g. <A, <B, <C, <D, <E 2. Check sum of included angles as equal to ( ... coincide with starting station (in case of closed traverse). If there is closing error, it needs to be corrected.
Description : A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant ... inclined to the horizontal at an angle of (A) 7° (B) 10° (C) 12° (D) 17
Last Answer : (C) 12°
Description : State the different point to be considered in selection of survey station for a closed traverse
Last Answer : 1) Main survey stations should be inter visible. 2) The main survey lines should form well-conditioned triangles. 3) Each triangle or portion of skeleton must be provided with sufficient check lines. ... ) Survey line must be as few as possible so that the frame work can be plotted conveniently.
Description : Pick up the correct statement from the following: (A) An observation or the resulting reading with the level on a levelling staff is called sight (B) A back sight is the first sight taken after setting up ... position (C) The first sight on each change point is a fore sight (D) All the above
Description : The first reading from a level station is (A) Foresight (B) Intermediate sight (C) Back-sight (D) Any sight
Last Answer : (C) Back-sight
Description : Stereoscopic-zoom microscopes and precision drill presses are normally associated with what type of repair station?
Last Answer : Microminiature repair station.
Description : What was Pierre Vernier's job ?
Last Answer : Pierre Vernier was a mathematician by profession.
Description : What is Vernier's constant ?
Last Answer : How much smaller a fraction of the vernier scale is than the smallest fraction of the main scale - its quantity is called the vernier constant.
Description : In setting up a plane table at any station (A) Levelling is done first (B) Centering is done first (C) Both levelling and centering are done simultaneously (D) Orientation is done first
Last Answer : (C) Both levelling and centering are done simultaneously
Description : Prior to taking a resistance reading with a volt-ohm-milliammeter, the 'zero' setting must be adjusted. After clipping the two leads together, you find the adjustment knob will not return the pointer ... range setting B. weak batteries C. a faulty zero ohms knob D. a faulty meter movement
Last Answer : Answer: B
Description : Cross-staff is used for (A) Setting out right angles (B) Measuring contour gradient (C) Taking levels (D) Measuring distances
Last Answer : (A) Setting out right angles
Description : Pick up the correct statement from the following: (A) Box sextant is used for the measurement of horizontal angles (B) Cross staff is used for setting out right angles (C) Gradiometer is used for setting out any required gradient (D) All the above
Description : A clinometer is used for (A) Measuring angle of slope (B) Correcting line of collimation (C) Setting out right angles (D) Defining natural features
Last Answer : (A) Measuring angle of slope
Description : Setting out of Lemniscate transition curves, is done with (A) Perpendicular offsets (B) Radial offsets (C) Deflection angles (D) Polar deflection angles
Last Answer : Answer: Option D
Description : The least count of a Vernier scale is (A) Sum of the smallest divisions of main and Vernier scales (B) Value of one division of the primary scale divided by total number of divisions ... division of Vernier scale divided by total number of divisions of primary scale (D) None of these
Last Answer : (B) Value of one division of the primary scale divided by total number of divisions of Vernier scale
Description : In case of a direct vernier scale (A) Graduations increase in opposite direction in which graduations of the main scale increase (B) Smallest division is longer than smallest division of the main scale ... in the same direction in which graduations of the main scale increase (D) None of these
Last Answer : C) Graduations increase in the same direction in which graduations of the main scale increase
Description : If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as (A) Direct vernier (B) Double vernier (C) Retrograde vernier (D) Simple vernier
Last Answer : (C) Retrograde vernier
Description : A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale reading is 5 mm and zero of circular
Last Answer : A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale ... (C) 0.053 cm (D) 0.529 cm
Description : Pointer of an analog ohmmeter reading close to zero, indicates the resistor being measured is: A. overheated B. shorted C. open D. reversed
Last Answer : Pointer of an analog ohmmeter reading close to zero, indicates the resistor being measured is: shorted
Description : For a closed traverse the omitted measurements may be calculated (A) Length of one side only (B) Bearing of one side only (C) Both length and bearing of one side (D) All the above
Description : For locating a distant object visible from two transit stations, the method usually preferred to, is (A) Angles and distances from transit stations (B) Angles from two transit stations ... from two transit stations (D) Angle from one transit station and distance from the other
Last Answer : (B) Angles from two transit stations
Description : The horizontal angles from the boat between A and B and B and C, the stations on the shore are 1 2. The distances AB = L1 and BC = L2 2 at C between the boat and station B between A and C at B). (A) 1 2) = (L2 1/L1 2) = K (B) t 2 = 360° - 1 2 (C) 2 = sin /(K + ) (D) All the above
Description : If a cohesive soil specimen is subjected to a vertical compressive load, the inclination of the cracks to the horizontal is (A) 90° (B) 45° (C) 22.5° (D) 0
Last Answer : (B) 45°
Description : The angle of internal friction of clays, is usually (A) 0° to 5° (B) 5° to 20° (C) 20° to 30° (D) 30° to 45
Last Answer : Answer: Option B
Description : Pick up the correct statement from the following: (A) The minimum frequency of light for which no electrons are emitted, is called threshold frequency (B) Polarising angle of glass is 57.5° (C) At the polarising angle, the reflected and refracted rays are orthogonal (D) All the above
Description : Minimum radius of a simple circular curve deflecting through 5°, is (A) 1618.9 m (B) 1816.9 m (C) 1718.9 m (D) 1817.9 m
Last Answer : Answer: Option C