SSC JE Civil Preliminary Exam in January 2018 | Practice test Day – 54 Welcome to your SSC JE Civil 2018 Objective Exam Practice test Day - 54 Take an exciting test in SSC JE Civil Preliminary Exam in January 2018. You have only 20 mins to complete the test (25 Questions) Wish you all the best!!! Name Email 1) In reciprocal levelling, the error which is not completely eliminated, is due to A. earth's curvature B. non-adjustment of line of collimation C. refraction D. non-adjustment of the bubble tube.2) The Random errors tend to accumulate proportionally to A. numbers of operations involved B. reciprocal of operations involved C. square root of the number of operation involved D. cube root of the number of operation involved.3) 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"4) The curve composed of two arcs of different radii having their centres on the opposite side of the curve, is known A. a simple curve B. a compound curve C. a reverse curve D. a vertical curve.5) 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 C. its graduations are in whole circle bearings D. it is provided with a prism to facilitate reading of its graduated circle6) The 'point of curve' of a simple circular curve, is A. point of tangency B. point of commencement C. point of intersection D. mid-point of the curve7) Diurnal variation of magnetic declination is A. greater at equator than nearer the poles B. less at equator than nearer the poles C. less in summer than in winter D. same at all latitudes and during different months.8) Simpson's rule for calculating areas states that the area enclosed by a curvilinear figure divided into an even number of strips of equal width, is equal to A. half the width of a strip, multiplied by the sum of two extreme offsets, twice the sum of remaining odd offsets, and thrice the sum of the even offsets B. one third the width of a strip, multiplied by the sum of two extreme offsets, twice the sum of remaining odd offsets and four times the sum of the even offsets C. one third the width of a strip, multiplied by the sum of two extreme offsets, four times the sum of the remaining odd offsets, and twice the sum of the even offsets D. one sixth the width of a strip, multiplied by the sum of the two extreme offsets, twice the sum of remaining odd offsets and four times the sum of the even offsets E. none of these9) 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.10) Which one of the following procedures for getting accurate orientation is the most distinctive feature of the art of plane tabling A. radiation B. intersection C. traversing D. resection.11) The longitudinal section of the surface of bubble tube is A. straight B. circular C. parabolic D. elliptic.12) 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 of vernier scale C. value of one division of vernier scale divided by total number of divisions of primary scale D. none of these.13) Removal of parallax, may be achieved by focussing A. the objective B. the eye-piece C. the objective and the eye-piece D. none of these.14) A clinometer is used for A. measuring angle of slope B. correcting line of collimation C. setting out right angles D. defining natural features.15) The true meridian of a place is the line in which earth's surface is intersected by a plane through A. east and west points B. zenith and nadir points C. north and south geographical poles D. north and south magnetic poles.16) Imaginary line passing through points having equal magnetic declination is termed as A. isogon B. agonic line C. isoclinic line D. none of these.17) In a constant level tube, size of the bubble remains constant because upper wall is A. of relatively larger radius B. of relatively smaller radius C. flat D. convex downwards.18) In tacheometrical observations, vertical staff holding is generally preferred to normal staffing, due to A. ease of reduction of observations B. facility of holding C. minimum effect of careless holding on the result D. none of these.19) The 'fix' of a plane table from three known points, is good, if A. middle station is nearest B. middle station is farthest C. either the right or left station is nearest D. none of these.20) Back bearing of a line is equal to A. Fore bearing ± 90° B. Fore bearing ± 180° C. Fore bearing ± 360° D. Fore bearing ± 270°21) 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 trummion axis is horizontal C. the line of collimation is perpendicular to vertical axis D. none of the above22) The direction of steepest slope on a contour, is A. along the contour B. at an angle of 45° to the contour C. at right angles to the contour D. none of these.23) 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.24) The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescope's A. resolving power B. brightness C. field of view D. magnification.25) The construction of optical square is based, on the principle of optical A. reflection B. refraction C. double refraction D. double reflection.