71- Laxmi Nagar (South), Niwaru Road, Jhotwara, Jaipur ,India. Phone: Mob. : /

Transcription

1 71- Laxmi Nagar (South), Niwaru Road, Jhotwara, Jaipur ,India. Phone: Mob. : / Limiting values of poisson s ratio are (a) -1 and 0.5 (b) -1 and -0.5 (c) 1 and -0.5 (d) 0 and Proof resilience is the maximum energy stored at: (a) Limit of proportionality (b) Elastic limit (c) plastic limit (d) None of these 3. The specimen in a charpy impact test is supported as a (a) Cantilever beam (b) Simply supported beam (c) Fixed beam (d) Continuous beam 4. The limit of poisson s ratio is (a) 0.25 (b) 0.15 (c) 0.50 (d) The property of a material by which it can be drawn into smaller section by application of tension is called (a) Plasticity (b) Ductility (c) Elasticity (d) Malleability 6. Every material obeys hook s laws within its (a) Elastic limit (b) Plastic limits (c) Limit of proportionality (d) None of the above 7. If a uniform bar is supported at one in a vertical end by a load equal to the weight of the bar, the strain energy as compared to that due to self weight will be (a) same (b) Half (c) Twice (d) Thrice 8. The % of elongation of the piece under tension indicates its (a) Brittleness (b) Malleability (c) Stiffness (d) Ductility 9. A square block is subjected to a state of simple shear the liner strain of the diagonal shall be equal to (a) Two times the shear strain (b) The shear strain (c) Half the shear strain (d) One fourth the shear strain 10. The relation between Young s modulus (E) and modulus of rigidity (N) is given as (a) E= 3N(1+µ) (b) E=2N(1+µ) (c) E=2N(2+µ) (d) E=3N(1-2µ) 11. If p is the tensile stress in rectangular bar of length L width b and thickness 'd ' the volumetric strain is given as (a) P(1+2µ)/e (b) PL(1-2µ)/bd (c) P(1-2µ) (d) P(1-2µ)E 12. The relation between Young s modulus (E) and modulus of rigidity (N) is given as (a) E=2N(1+1/m) (b) E = 2N(1-1/m) (c) E=2N/(1+1/m) (d) E=1/2n(1+1/m) 13. The relation between E(modulus of elasticity) and N (Shear modulus) is given by (a) E=N(1-2µ) (b) E=2N(1+µ) (c) E=3n(1-2µ) (d) None of the above 14. The ratio between stress and strain is called as (a) Modulus of elasticity (b) Modulus of rigidity (c) Bulk modulus (d) None of the above 15. If the cantilever beam carries a uniformly distributed load then shape of bending moment diagram is (a) Linear (b) Quadratic parabola (c) Cubic parabola (d) Triangle 16. Free body diagram is an

2 (a) isolated joint with only body force acting on it (b) isolated joint with internal force acting on it (c) isolated joint with all the forces internal as well as external acting on it (d) None of these 17. For the same span and loading condition the maximum bending moment in a fixed beam compared to a simple supported one shall be (a) Higher (b) lower (c) The same (d) Nothing can be said 18. The rate of change of shear force is equal to (a) Bending (b) Curvature (c) Deflection (d) intensity of loading 19. Simply supported beam having a span of 3 m and carrying a uniformly distributed load of 10kN/m has a shear force at mid span of (a) 15kN (b) 20kN (c) 7.5kN (d) Zero 20. A cantilever of span L has a load p acting at the free end The bending moment at the free end will be (a) 0 (b) PL (c) -PL (d) PL/2 21. The bending moment (M) is constant over a length of a segment (L) of a beam the shearing force will also be a constant over this length and is given by (a) M/L (b) M/2L (c) M/4L (d) None of the above 22. Consider the following statement A simplysupported beam is subjected to a couple somewhere in the span. it would produce (1) A rectangular SF diagram (2) Parabolic (3) Both +ve and ve and ve BMs which are maximum at the point of application of the couple of these statement (a) 1.2 and 3 are correct (b) 1,2 are correct (c) 2 and 3 are correct (d) 1and 3 are correct 23. In a cantilever beam with u.d.l the shear force varies following (a) Linear law (c) Both (a) and (b) (b) parabolic law (d) none of the above 24. The plane carrying maximum shear stress are (a) Principal planes (b) inclined at 90 o to those of principal planes (c) inclined at 45 o to principal planes (d) Parallel to principal planes 25. In the conjugate beam method a simple outer support in the real beam is transformed as (a) a fixed support (b) A hinge (c) A free joint (d) A simple support 26. A beam simply supported at both the ends of length L carries two equal unlike couples m at two end if the flexure rigidity el is constant then the central deflection of the beam is given by (a) ML 2 /4 El (b) ML 3 /16EL (c) ML 2 /64El (d) ML 2 /8El 27. In the case of beam bending the term M/El represents (a) The stress (b) The rigidity of the section (c) The curvature (d) Shear force 28. The bending equation is written as (a) M/I=σσ b /Y = E/R (b) I/M =σσ b /Y = E/R (c) M/I =σσ b /Y = R/E (d) M/I =σσ h X Y = E/R 29. The ratio of flexural rigidity of a beam (b d) to another one (b 2d) of similar material will be (a) ½ (b) ¼ (c) 1/8 (d) 1/ For a rectangular beam the maximum shear stress is related to average shear stress ττ v by (a) ττ v (b) 1.25 ττ v (c) 1.50 ττ v (d) 1.75 ττ v 31. Hoop tension in pressure pipe (where p is the pressure at the pipe center d is the diameter of pipe and t is the thickness of pipe wall) is given by (a) pd/2t (b) pd/4t (c) pd/6t (d) pd/8t

3 32. An open ended thin cylindrical shall subject to uniform internal pressure will be subjected to (a) Hoop stress only (b) longitudinal stress only (c) Both hoop stress and longitudinal stress (d) None of the above k 33. A closed coil helical spring is subjected to a torque about it axis. the spring wire would experience a (a) Bending stress (b) Direct tensile stress of uniform intensity at its cross section (c) Direct shear stress (d) Torsional shearing stress 34. A circular shaft transmit a torque of 5 knm if the torque is reduce to 4 knm then the maximum value of bending moment that can be applied to the shaft is (a) 1 knm (b) 2 knm (c) 3 knm (d) 4 knm 35. In a cantilever retaining wall the stem design shear force is (a) K a gh 2 /2 (b) K a gh 3 (c) K a gh 3 /6 (d) K a gh 2 / In a cantilever retaining wall the stem design moment is (a) K a gh 2 /2 (b) K a gh 3 (c) K a gh 3 /6 (d) K a gh 2 / Euler s crippling load for a column of length l with one end fixed and the other is hinged is (a) ππ 2 El/L 2 (b) 4 ππ 2 El/L 2 (c) ππ 2 El/4L 2 (d) 2ππ 2 El/L The brick chimney is stable if the resultant thrust lies within the middle (a) Third (b) Half (c) Either of the above (d) none of the above 39. When slenderness ratio in a column lies between 32 to 120 it is known as (a) Long column (b) short column (c) Medium column (d) stocky column 40. The moment of inertia of a rectangle of width b and depth b about its horizontal axis at middepth is (a) db 3 /12 (b) bd 3 /12 (c) bd 3 /3 (d) db 3 /3 41. moment of inertia is a concept applicable in case of (a) A rotating body (b) A body moving in straight line (c) A body at rest (d) Both (a) and (b) 42. The moment of inertia of the cross-section about x-x axis is (a) D 3 b/3 (b) D 3 b/12 (c) Db 3 /3 (d) Db 3 / The bending moment at any section of an arch is equal to the vertical intercept between (a) The line of thrust and the centre line of actual arch (b) The base line of arch and the line of truth (c) The base line and the centre line of the actual arch (d) None of the above 44. An arch subjected to pure compression due to a udl shall be a (a) Three hinged elliptical arch (b) Three hinged elliptical arsch (c) parabolic arch (d) foxed arch 45. if the total number of reaction components is less than the total number of condition equations available the structure shall be (a) stable (b) Indeterminate (c) externally redundant (d) unstable 46. Number of unknown internal force in each member of a rigid jointed plane frame is given by

4 (a) 1 (b) 2 (c) 3 (d) For a pin jointed plane structure to be statically determinate the necessary condition is m= number of unknown force r=numbers of unknown reaction j=numbers of joints (a) m + r = 2j (b) 3m + r = 2j (c) m + r = 3j (d) m + 2r = 3j 48. The beam shown below is indeterminate of degree (a) 3 (b) 4 (c) 1 (d) Which of the beam given in the following figs is a determinate beam (a) Hardness (b) Toughness (c) Brittleness (d) Softness 53. Poisson's ratio is µ defined as the ratio of (a) axial strain to transverse strain (b) axial strain to shear strain (c) transverse strain to axial strain (a) shear strain to axial strain 54. A linear force-deformation relation is obtained in materials (a) having elastic stress-strain property (b) having plastic stress-strain property (c) following Hooke's law (d) which are rigid elastic materials 55. The property of a material by which it can be beaten or rolled into plates, is called (a) malleability. (b) ductility (c) plasticity (d) elasticity 56. "Poisson's ratio" is defined as the ratio of (a) lateral strain to linear strain (b) linear strain to lateral strain (c) lateral stress to linear stress (d) linear stress to lateral stress 50. In the displacement method of structural analysis the basic unknown are (a) displacements (b) force (c) displacements and forces (d) none of these 51. The statement that the deflection caused by any external force is equal to the partial derivative of the strain energy with respect to that force is as per (a) castigliano s first theorem (b) castigliano s second theorem (c) Theorem of minimum strain energy (d) Maxwell s theorem 52. The ability of the material to absorb energy till the breaking or rupture taken place is known as 57. Which of the following has least carbon content (a) Wrought iron (b) Cast iron (c) Mild steel (d) Pig steel 58. Which of the following is a dimension less quantity? (a) Shear force (b) Stress (c) Strain (d) Modulus of elasticity 59. The ratio of normal stress to normal strain within elastic limits is called : (a) Young's modulus (b) Shear modulus (c) Poisson's ratio (d) Bulk modulus

5 60. In a structure, cables and wires are used generally as: (a) To resist shear stress (b) Tension member (c) Compression member (d) Flexural member 61. The limit to Poisson's ratio is: (a) 0.25 (b) 0.15 (c) 0.50 (d) Relation between Young's modulus (E) and modulus of rigidity (N) is given as (a) E = 3N (1+ n) (b) E = 2N (1- n) (c) E = 2N (1+ n) (e) E = 3N (1-2n) 63. The modulus of elasticity of steel is (a) 2 X 10 4 MPa (b) 1.2 X 10 5 MPa (c) 2 X 10 5 MPa (d) 2 X 10 6 MPa 64. Identify the erroneous statement. Mild steel (a) has two yield points. (b) is a ductile material. (c) has small percent elongation at failure (d) shows strain hardening. 65. The maximum numerical value of Poisson's ratio is (a) 0.0 (b) 0.25 (c) 0.50 (d) The relationship between Young's modulus, E, shear modulus, G, and Poisson's ratio, n, is given by (a) G = E / [2(1+n)] (b) E = G / [2(1+n)] (c) G = E / [2(1-n)] (d) G / (1+n) 67. The modulus of elasticity of steel is more than that of concrete. It indicates that steel is (a) less elastic (b) more elastic (c) more plastic (d) less plastic 68. Hooke's law is valid up to (a) Elastic limit (b) Yield point (c) Limit of proportionality (d) Ultimate point 69. The ability of a material to absorb energy till the elastic limit is known as (a) Elasticity (b) Malleability (c) Resilience (d) Ductility 70. Out of the following, which is least elastic? (a) Iron (b) Copper (c) Silver (d) Rubber 71. A prismatic bar of volume V is subjected to a tensile force in longitudinal direction. If Poisson's ration of material is µ and longitudinal strain is e, then the final volume of the bar becomes (a) (1 + e) (1-µ) 2 V (b) (1 - e) (1+µ e) V (c) (1 + e) (1-µe) 2 V (d) (1-µe) 3 V 72. In case of biaxial stress, the maximum value of shear stress is given by (a) Difference of the normal stresses (b) Half the difference of the normal stresses (c) Sum of the normal stresses (d) Half the sum of the normal stresses 73. In a Mohr's circle of s-t plane s= normal stress = shear stress), the vertical diameter represents (a) Maximum shear stress (b) Maximum normal stress (c) Principal stress (d) Minimum normal stress 74. In a thin cylindrical shell, the ratio of longitudinal stress to hoop stress is

6 (a) 0.5 (b) 1.0 (c) 1.5 (d) Strain energy due to axial deformation is given by(s : resultant stress, P: axial load, Δ: deformation, v : strain, E : modulus of elasticity) (a) sv (b) PΔ (c) s 2 /2E (d) 11 PΔ Strain energy due to sudden axial load is given by: (s : resultant stress, P : axial load, Δ : deformation, v : strain, E : modulus of elasticity ) (a) 11 PΔ 22 (b) sv (c) PΔ (d) s 2 /2E 77. The angle between the principle plane and the plane of maximum shear is (a) 45 0 (b) 90 0 (c) (d) (a) s 2 /2E (b) s 2 /4E (c) s 2 /8E (d) s 2 /16E 80. Ratio of length of column to the minimum radius of gyration of the cross sectional area of the column is known as (A) Slenderness ratio (B) buckling ratio (C) crippling ratio (D) compressive ratio 81. The effective slenderness ratio of a cantilever column is (A) 0.5L/r (B) L/r (C) 2L/r (D) 2L/r 82. The slenderness ratio of a column is zero when its length: (A) effective length is equal to actual length (B) is very large (C) is equal to its radius of to gyration (D) is supported on all side throughout its length 83. Compression members always tend to buckle in the direction of the (A) least radius of gyration (B) axis of load (C) perpendicular to the axis of load (D) minimum cross-section 84. Bucking load for an axially loaded column with both ends fixed is given by s s For such element only under normal stresses, the radius of Mohr circle is (a) s (b) s/2 (c) 2s (d) 0.6 s 79. Strain energy per unit volume of a solid circular shaft under axial tension is 85. Euler s formula is valid for : A) short column only B) long column only C) both short and long column D) none of the above 86. The equivalent length of a column of length L having both ends fixed as given by: A) 2L B) L C) L/2 D) L/ 2

7 87. Two beams one of circular cross section and the other of square cross section have equal areas of cross section.if subjected to bending, then A) circular cross section is more economical B) square cross section is more economically C) Both sections are equally economically D) both sections are equally stiff 88. The allowable stress in a long column can be increased by increasing the : (A) radius of gyration (B) eccentricity (C) slenderness ratio (D) length of the column 89. Which one of the following factors does not affected the lateral buckling strength of a steel I section undergoing bending about its major axis? A) Boundary conditions at the ends B) Radius of gyration about the minor axis of the sections C) Laterally unsupported length of the compression flange D) Radius of gyration about the major axis of the section 90. A beam fixed at both ends carries a uniformly distributed load on entire length. The ratio of bending moment at the support to the bending moment at mid span is given by (a) 0.5 (b) 1.0 (c) 0.5 (d) From a circular plate of diameter 6.0 cm. a circle is cut out whose diameter is a radius of the plate. The distance of centre of gravity of the remainder from the centre of circular plate is (a) 2.0 (b) 1.5 (c) 1.0 (d) In a section undergoing pure bending, the neutral surface is subjected to (a) compression strain (b) tensile strain (c) zero strain (d) none of the above 93. Of the several prismatic beams of equal lengths and of same material, the beam that can carry maximum load in flexure is the one having maximum (a) Depth of section (b) Area of cross section (c) Section modulus (d) Moment of inertia 94. A structure which offers negligible or zero resistance on bending at any point is known as (a) Beam (b) Girder (c) Lintel (d) Cable 95. Moment of inertia of rectangular section shown in fig. about its horizontal centroidal axis is b d (a) db 3 /12 (b) db 3 /3 (c) bd 3 /12 (d) bd 3 /3 96. If 'A' is the area of cross-section and ' I ' is moment of inertia of a given plane section, then radius of gyration (r) the is given by the formula (a) r = I / A (b) r = I / A (c) r = A / I (d) r = A / I 97. A 40 cm. diameter circular timber column is 4 m. long. The slenderness ratio of the column is: (a) 20 2 (b) 10 (c) 20 (d) Section modulus for a rectangular section is given as: (a) bd 2 /36 (b) bd 3 /36 (c) bd 2 /6 (d) bd 2 /12

8 99. For a beam, the term M/EI is : (a) stress (b) rigidity (c) curvature (d) shear force 100. EI (d 3 y/dx 3 ) for a beam represents : (a) deflection (b) slope (c) moment (d) shear 101. The shear stress distribution over a beam of solid circular section is such that : (a) q max = 2q mean (b) q max = 1.5 q mean (c) q max = 1.33 q mean (d) q max =1.25 q mean 102. The bending stress on a prismatic beam is given by (a) My / Z (b) My / I (c) MZ / y (d) MI / y 103. The thermal expansion coefficient (ά) of steel is (a) 13 x 10-6 / 0 C and closely resembles to ά of concrete (b) 11 x 10-6 / 0 C differs widely from ά of concrete (c) 12 x 10-6 / 0 C and close to ά of concrete (d) )14 x 10-6 / 0 C but equal to ά of concrete 104. A simply supported beam is carrying distributed load of zero intensity over one support to linearly varying nature of intensity w over the other support. the shape of BMD will be (a) Linear (b) Parabolic (c) Cubical parabolic (d) Zero 105. Shear force at the mid- span point D in the following beam is 106. Two identical simply supported beams of span L are subjected to equal load W at its center (as concentrated load) and other one is carrying it in the form of u.d.l. over the entire span. The ratio of their mid-span B.M. will be- (a) 1/2 (b) 2 (c) 4 (d) The shear diagram for a cantilever beam subjected to a concentrated load at the free end is given by a/an (a) Triangle (b) Rectangle (c) Parabol (d) Ellipse 108. In the cantilever beam subjected to general loading, the maximum B.M. is at (a) Fixed end (b) Free end (c) Mid-span (d) Quarter-span 109. The maximum shear force in a simply supported beam of span L subjected to a central point load, W is given by following expression (a) W/2 (b) WL (c) WL 2 /2 (d) WL 2 / For simply supported beam shown in fig., the magnitude of vertical reaction at B is (a) 20 kn (c) 15 kn 111. The beam shown in fig is (b) 18 kn (d) 10 kn (a) Zero (b) 2M/L (c) M/L (d) 3M/L (a) Free cantilever beam (b) Single overhanging beam (c) Double overhanging beam (d) Propped cantilever beam 112. For the cantilever beam shown in fig the value of shear force at fixed end

9 (a) 100 kn (c) 80 kn (b) 20 kn (d) 90 kn 113. In a simply supported beam of span L subjected to UDL of intensity W kn/m over its entire length the maximum bending is given by the expression (a) WL 2 /8 (b) WL/2 (c) WL 2 /2 (d) WL 114. Reaction at support A is (a) 40 kn downward (b) 40 kn upward (c) 20 kn upward (d) 20 kn upward 115. For the above cantilever beam, the absolute value of shear force at A is (a) 1.0 kn (c) 0.0 kn (b) 4.0 kn (d) 2.0 kn 116. The shear force at the point of contraflexure in the following beam is 117. Ratio of length of column to the minimum radius of gyration of the cross sectional area of the column is known as (A) Slenderness ratio (B) buckling ratio (C) crippling ratio (D) compressive ratio 118. At the point of contra flexure (A) Bending moment is minimum (B) Bending moment is maximum (C) Bending moment is maximum (D) Bending moment is zero and its sign changes 119. The maximum dimension of a core section for a rectangular cross-section under eccentric loading on a column (b x d) is (A) b/6 (B) d/6 (C) d/8 (D) b/3 and d/ Deflection of the end of a cantilever beam having a concentrated load W at mid span is given by (A) WL 3 /3 EI (B) 5 WL 3 /24 EI (C) 5WL 3 /48 EI (D) WL 3 /48 EI 121. A concentrated load W acts at the center of a simply supported beam of length L if the Point load is changed to a uniformly distributed load over the entire span, then the ratio of maximum deflection under concentrated load and under uniformly distributed load will be (A) 1.2 (B) 1.3 (C) 1/4 (D) 8/ The curvature at any point (1\R) along the curve representing the deformed shape of a beam is given by (a) 0 (c) M/b (b) M/a (d) M/L

10 123. Angle of twist of a circular shaft under the action of a torsional T is given by (A) GJ/TL (B) TL/GJ (C) TJ/GL (D) TG/JL B) C) 16T πd 3 32T πd The moment required to rotate the near end of a prismatic beam through unit angle, without translation the far end being fixed is (A)EI/L (B)2 EI/L (C) 3 EI/L (D) 4 EI/L 125. For a fixed support in a plane structure, total numbers of reaction is : A) 1 B) 2 C) 3 D) If lines of action of force in a system of force meet a point then these force are called as : (A) parallel forces (B) non-concurrent forces (C) concurrent forces (D) resultant forces 127. Strain energy stored in a solid is given: (A) σσ vvvvvvvvvvvv (B) σσ aaaaaaaa oooo cccccccccc ssssssssssssss (C) 0.5* σσ II (D) 0.5* σσ vvvvvvvvvvvv 128. Which eccentric load, if placed within the central core shown in figures below, does no produced tension in the column cross-section: D) 32T πd The maximum deflection of tip of cantilever beam with concentrated load P at the free end is: (A) (PPPP^3)/3EEEE (B) (PPPP^3)/8EEEE (C) (PPPP^3)/12EEEE (D) (PPPP^3)/24EEEE 131. For a given shear force a symmetrical I section the intensity of shear stress is maximum at the: (A) extreme fibers (B) centroid of the section (C) at the junction of the flange and the web, but on the web (D) at the junction of the flange and the web but in the flange 132. The equivalent length of a column of length L having both ends fixed as given by: (A) 2L (B) L (C) L/2 (D) L/ The predominant effect of an axial tensile force on a helical spring is (A) bending (B) tension (C) compression (D) twisting 134. Slope at the support of a simply support beam effective span L with a central point load W is given by: a. WL 2 /8EI b. WL 2 /12EI c. WL 2 /16EI d. WL 2 /24EI 129. Maximum shear sress produced on a solid circular shaft under torque is : A) 16T πd If a circular shaft is subjected to a torque T and bending moment M, the ratio of maximum bending stress and maximum shear stress given by:

11 141. The simplest geometrical form of a truss is a : (A) triangle (B) parallelogram (C) trapezium (D) square 136. The point of contraflexure is a point where : (A) shear force changes sign (B) Bending moment changes sign (C) shear force is maximum (D) bending moment is maximum 137. A rectangular log wood is floating in water with a load of 100 N at its centre.the maximum shear force in the wooden log is: (A) 50 N at each end (B) 50 N at the centre (C) 100 N at the centre (D) 0 shear all through 138. Point out correct matching: 139. In a beam at a section carrying a shear force F, the shear stress is maximum at (A) Neutral surface (B) Top most fibre (C) Bottom most fibre (D) Mid depth 142. The angle of twist of a closely helical spring under an axial torque is given by: 143. The effective length of a steel column, effectively held in position and restrained against rotation at both ends is: A) 0.5 L B) 0.65 L C) 0.80 L D) 1.0 L 144. A simply supported beam of span 'L' is loaded with downward UDL of intensity W/m over its entire length. Which of the following orientation of T-beams is preferred to a resist bending? 140. For a cantilever beam of length L carrying a triangular load of intensity w at the support and zero at the free end, the slope of the free end is given by:

12 Answer Key: 1.(d) 2.(b) 3.(b) 4.(c) 5.(b) 6.(c) 7.(c) 8.(d) 9.(c) 10.(b) 11.(d) 12.(a) 13.(b) 14.(a) 15.(b) 16.(c) 17.(b) 18.(d) 19.(d) 20.(a) 21.(a) 22.(d) 23.(a) 24.(c) 25.(d) 26.(d) 27.(c) 28.(a) 29.(c) 30.(c) 31.(a) 32.(c) 33.(d) 34. (c) 35.(a) 36.(c) 37.(d) 38.(a) 39.(c) 40.(b) 41.(c) 42.() 43.(d) 44.(c) 45.(d) 46.(c) 47.(a) 48.(d) 49.(a) 50.(a) 51.(b) 52.(b) 53.(c) 54.(c) 55.(a) 56.(a) 57.(a) 58.(c) 59.(a) 60.(b) 61.(c) 62.(c) 63.(c) 64.(c) 65.(c) 66.(a) 67. (b) 68.(c) 69.(c) 70.(d) 71.(c) 72.(b) 73.(a) 74.(a) 75.(d) 76.(c) 77.(a) 78.(a) 79.(a) 80.(a) 81.(d) 82.(d) 83.(a) 84.(c) 85.(b) 86.(c) 87.(b) 88.(a) 89.(d) 90.(d) 91.(d) 92.(c) 93.(c) 94.(d) 95.(c) 96.(b) 97.(d) 98.(c) 99.(c) 100.(d) 101.(c) 102.(b) 103.(c) 104.(c) 105.(c) 106.(b) 107.(b) 108.(a) 109.(a) 110.(d) 111.(b) 112.(b) 113.(a) 114.(a) 115.(c) 116.(d) 117.(a) 118.(d) 119.(d) 120.(c) 121.(d) 122.(b) 123.(b) 124.(c) 125.(c) 126.(c) 127.(d) 128.(d) 129.(b) 130.(a) 131.(b) 132.(c) 133.(d) 134.(c) 135.(a) 136. (b) 137. (b) 138. (d) 139. (a) 140. (c) 141.(a) 142. (b) 143. (a) 144. (b)