A pressure conduit laid underground, may not be subjected to
(A) Internal pressure of water
(B) Pressure due to external load
(C) Longitudinal temperature stress
(D) Longitudinal stresses due to unbalanced pressure to bends
Description : Underground cables are laid at sufficient depth (a) to minimise temperature stresses (b) to avoid being unearthed easily due to removal of soil (c) to minimise the effect of shocks and vibrations due to gassing vehicles, etc. (d) for all of the above reasons
Last Answer : (c) to minimise the effect of shocks and vibrations due to gassing vehicles, etc.
Description : A concrete block subjected to shear stresses, then the failure may result by [ A ] Diagonal tension [ B ] Longitudinal tension [ C ] Diagonal compression [ D ] None of the above
Last Answer : [ A ] Diagonal tension
Description : Steel pipe are (A) Suitable for withstanding high internal pressure (B) Connected by riveted or welded joints (C) Generally laid underground and no expansion joint is required (D) Likely to last 100 years under ordinary conditions
Last Answer : (D) Likely to last 100 years under ordinary conditions
Description : Pick up the correct statement from the following regarding the pressure conduits: (A) Pressure conduits are permitted to run ¾th full (B) Pressure conduits are always laid along down grades ... ) The hydraulic gradient line always coincides the invert of the conduit (D) None of these
Last Answer : (D) None of these
Description : An open-ended cylinder of radius and thickness is subjected to internal pressure . The Young's modulus for the material is and Poisson's ratio is . The longitudinal strain is (A) Zero (B) pr/TE (C) pr/2TE (D) None of these
Last Answer : (A) Zero
Description : The longitudinal shearing stresses acting on the surface between the steel and concrete are called. (a) Bond stress (b) Tensile stresses (c) Compressive stresses (d) None of these
Last Answer : (a) Bond stress
Description : The force which develops in a pressure conduit supported on trestles, is (A) Tension (B) Compression (C) Temperature stress (D) Flexural stress
Last Answer : (D) Flexural stress
Description : Design of a thin shell under pressure is done on the basis of a. Radial stress b. Longitudinal stress c. Hoop stress d. All the three stresses
Last Answer : c. Hoop stress
Description : The base of a column is subjected to moment. If the intensity of bearing pressure due to axial load is equal to stress due to moment, then the bearing pressure between the base and the concrete ... Tension at one end and compression at the other end (d) Compression, verying as a parabolic profile
Last Answer : (b) Zero at one end and compression at the other end
Description : A compound bar consists of two bars of equal length. Steel bar cross-section is 3500 mm2 and that of brass bar is 3000 mm2 . These are subjected to a compressive load 100,000 N. If Eb = 0.2 MN/mm2 and Eb = 0.1 ... 6 N/mm2 s = 12 N/mm2 (D) b = 5 N/mm2 s = 10 N/mm
Last Answer : (A) b = 10 N/mm2 s = 20 N/mm
Description : When a bar is subjected to a change of temperature and its longitudinal deformation is prevented, the stress induced in the bar is (a) Tensile (b) Compressive (c) Shear (d) Temperature
Last Answer : (d) Temperature
Description : The transverse reinforcements provided at right angles to the main reinforcement (A) Distribute the load (B) Resist the temperature stresses (C) Resist the shrinkage stress (D) All the above
Last Answer : Answer: Option D
Description : Torque and bending moment of 100 kN.m and 200 kN.m acts on a shaft which has external diameter twice of internal diameter. What is the external diameter of the shaft which is subjected to a maximum shear stress of 90 N/mm2? a. 116.5 mm b. 233.025 mm c. 587.1 mm d. 900 mm
Last Answer : c. 587.1 mm
Description : If a constant section beam is subjected to a uniform bending moment throughout, its length bends to (A) A circular arc (B) A parabolic arc (C) A catenary (D) None of these
Last Answer : (A) A circular arc
Description : The external load per unit length of (A) A pipe laid on, or projecting above the undisturbed ground and covered with fills, is proportional to the square of the external diameter of the pipe ... fills, is proportional to the square of the width of the trench (D) All the above
Last Answer : (D) All the above
Description : During transverse vibrations, shaft is subjected to which type of stresses? A) Tensile stresses B) Torsional shear stress C) Bending stresses D) All of the above
Last Answer : C) Bending stresses
Description : During transverse vibrations, shaft is subjected to which type of stresses? a. Tensile stresses b. Torsional shear stress c. Bending stresses d. All of the above
Last Answer : c. Bending stresses
Description : Pick out the correct statement. (A) Hot worked materials are subjected to annealing to remove internal stresses (B) Annealing of steel hardens it slightly (C) Normalising of a material induces stresses (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness
Last Answer : (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness Share
Description : Pick out the wrong statement. (A) Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties (B) Low carbon steel does not respond to ... are also used for surface hardening (D) Martempering of a material is a hardening process
Last Answer : Option C
Description : The difference in the reservoir level and the lowest point of the water mains is 180 m. The expected pressure due to water hammer is 7.5 kg/cm2 in a pressure conduit of diameter 1 m. Assuming the efficiency of the ... , is (A) 10 mm (B) 15 mm (C) 20 mm (D) 25 mm
Last Answer : (C) 20 mm
Description : Due to the impact of water wave on a sea shore structure (A) Hydrostatic pressure coupled with a strong momentary impact is caused (B) Vibrations are subjected (C) Internal pressure is developed (D) All of the above
Last Answer : (D) All of the above
Description : The critical combination of stresses for corner region in cement concrete roads is (A) Load stress + warping stress frictional stress (B) Load stress + warping stress + frictional stress (C) Load stress + warping stress (D) Load stress + frictional stress
Last Answer : Answer: Option C
Description : Pickup the incorrect statement from the following: (A) The invert of pressure conduit is independent of the grade of the hydraulic gradient line (B) The pressure conduits may be taken uphill ... m (C) Aqueducts and tunnels sections are generally kept circular (D) None of these
Description : Pick up the correct statement from the following: (A) An unconfined compression test is a special case of triaxial compression test (B) An unconfined compression test is a special case of direct ... subjected to major principal stress till it fails due to shearing along the plane of the failure
Last Answer : Option A
Description : The section modulus of a rectangular light beam 25 metres long is 12.500 cm3 . The beam is simply supported at its ends and carries a longitudinal axial tensile load of 10 tonnes in addition to a point load of ... 13.33 kg/cm2 compressive (C) 26.67 kg/cm2 tensile (D) 26.67 kg/cm2 compressive
Last Answer : (C) 26.67 kg/cm2 tensile
Description : If the tendon is placed at an eccentricity e below the centroidal axis of the longitudinal axis of a rectangular beam (sectional modulus Z and stressed load P in tendon) the stress at the extreme top edge (A) Is ... by PZ/e (B) Is increased by Pe/Z (C) Is decreased by Pe/Z (D) Remains unchanged
Description : If h is the loss due to friction in a pipe. Total losses in strainer and bends may be taken as (A) 0.01 h (B) 0.45 h (C) 0.20 h (D) 0.25 h
Description : the loss due to friction in pipes is 4 m, the total losses in strainer and bends may be taken as (A) 0.10 m (B) 0.20 m (C) 0.5 m (D) 1.0 m
Description : In a thick cylindrical shell subjected to an internal pressure (p), the radial stress across the thickness of a cylinder is a) maximum at the outer surface and minimum at the inner surface b) maximum ... and zero at the outer surface d) maximum at the outer surface and zero at the inner surface
Last Answer : c) maximum at the inner surface and zero at the outer surface
Description : A thick cylinder is subjected to an internal pressure of 60 MPa. If the hoop stress on the outer surface is 150 MPa, then the hoop stress on the internal surface is a) 105 MPa b) 180 MPa c) 210 MPa d) 135 MPa.
Last Answer : c) 210 MPa
Description : Principal planes are subjected to (A) Normal stresses only (B) Tangential stresses only (C) Normal stresses as well as tangential stresses (D) None of these
Last Answer : (A) Normal stresses only
Description : When the distance between centers of two adjacent rivets connecting the members subjected to either compression or tension exceeds the maximum pitch, then the additional rivets which are not subjected to the ... (a) Packing rivets (b) Long-grip rivets (c) Tacking rivets (d) Auxiliary rivets
Last Answer : (c) Tacking rivets
Description : The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called (A) Stiffness (B) Proof resilience (C) Proof stress (D) Proof load
Last Answer : (B) Proof resilience
Description : The maximum load to which a fillet joint of length can be subjected to, is (A) 0.7 × S × fillet size × L (B) 2 × S × fillet size × L (C) Permissible shear stress × fillet size × L (D) (S × fillet size × L)/3
Last Answer : (A) 0.7 × S × fillet size × L
Description : In a bar of large length when held vertically and subjected to a load at its lower end, its ownweight produces additional stress. The maximum stress will be (A) At the lower cross-section (B) At the built-in upper cross-section (C) At the central cross-section (D) At every point of the bar
Last Answer : (B) At the built-in upper cross-section
Description : A force acting on a body may (A) Introduce internal stresses (B) Balance the other forces acting on it (C) Retard its motion (D) All of the above
Description : The maximum longitudinal pitch in bolted joints, subjected to tensile forces, wherein t = thickness of the plate and D = diameter of bolt, is (a) 32 D (b) 16 D (c) 32 t (d) 16 t
Last Answer : (d) 16 t
Description : The ratio of circumferential stress to the longitudinal stress in the walls of a cylindrical shell, due to flowing liquid, is (A) ½ (B) 1 (C) 1½ (D) 2
Last Answer : (D) 2
Description : The stress in the wall of a cylinder in a direction normal to its longitudinal axis, due to a force acting along the circumference, is known as (A) Yield stress (B) Longitudinal stress (C) Hoop stress (D) Circumferential stress
Last Answer : (C) Hoop stress
Description : In a static fluid (A) Resistance to shear stress is small (B) Fluid pressure is zero (C) Linear deformation is small (D) Only normal stresses can exist
Description : From the internal surface to the external surface, the digestive tube wall is made of mucosa (epithelial tissue responsible for the intestinal absorption), submucosa (connective tissue beneath the ... within the abdominal cavity. Digestion System - Image Diversity: histology of the digestive tube
Last Answer : What is the location of the salivary glands in humans?
Description : Ab and Ac are the cross sections of bronze and copper bars of equal lengt b c are their respective stresses due to load P. If Pb and Pc are the loads shared by them, (where Eb and Ec are their modulii) ... /Ec (B) P = Pb + Pc (C) P = Ab b + Ac b (D) All the above
Description : A pressure conduit carrying water beneath a stream or a canal, is known as (A) Sag (B) Depressed pipe (C) Inverted syphon (D) All the above
Description : State the four methods of laying of cable. State precautions while laying of underground cable in the situation : (i) Minimum clearance between cable and water pipe line when running in parallel. (ii) ... is to be laid in the same trench, what should be minimum spacing between two cables ?
Last Answer : (i) Minimum clearance between cable and water pipe line when running in parallel:- 0.5 mtr. (ii) Minimum clearance between cable and water pipe line when running in parallel:- 0.5 mtr ... should be minimum spacing between two cables :- Then minimum 30 cm spacing is provided between 2 cables
Description : A member which is subjected to reversible tensile or compressive stress may fail at a stress lower than the ultimate stress of the material. This property of metal, is called (A) Plasticity of the ... ) Elasticity of the metal (C) Fatigue of the metal (D) Workability of the metal
Last Answer : (C) Fatigue of the metal
Description : Levees and flood walls, (A) Are designed to carry unbalanced water load (B) Are designed with adequate dimensions (C) Are means of controlling floods (D) Are never provided free-boards
Description : An optical fiber cable laid underground has developed a discontinuity at a distance d from the source end. The fault can be located using the instrument (a) Optical spectrum Analyzer (OSA) (b) Optical Time Domain Reflectometer (OTDR) (c) Optical Power Meter (OPM) (d) Laser Diffractometer (LD)
Last Answer : An optical fiber cable laid underground has developed a discontinuity at a distance d from the source end. The fault can be located using the instrument Optical Time Domain Reflectometer (OTDR)
Description : Pick up the correct statement from the following: (A) Isotropic consolidation of clay can be obtained in the triaxial apparatus under equal allround pressure (B) If the present effective stress is the ... more than present effective stress, it is called over-consolidated clay (D) All the above
Description : Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter 'd'? (A) At the centre (B) At d/4 from the wall (C) At the wall (D) At d/8 from the wall
Last Answer : (C) At the wall
Description : Which among these is a type of internal wiring? A. Cleat wiring B. Conduit wiring C. CTS wiring
Last Answer : Which among these is a type of internal wiring? A. Cleat wiring B. Conduit wiring C. CTS wiring A, B and C