29951. A cold drawn seamless steel tubing subject to internal pressure, has a diameter of 6 cm and wall thickness of 0.2 cm. The ultimate strength of steel is 3600 kg/cm2. The bursting pressure (in kg/cm2) is
29952. Which of the following factors are associated with the behaviour of sand mass during earthquake to cause liquefaction ?
1. Number of stress cycles
2. The frequency, and amplitude of vibration of waves generated by an earthquake
3. Characteristics of sand
4. Relative density
Select the correct answer using the codes given below :
29953. The ratio of total elongation of a bar of uniform cross-section produced under its own weight to the elongation produced by an external load equal to the weight of the bar is
29954. The figure refers to a channel section of uniform thickness of 1 cm used as a beam with the cross-sectional dimensions shown in cm units. If the Moment of Inertia of channel Ixx be equal to 246 cm4 and C be the shear centre, then the value of e in cm is equal to
29955. The shear force diagram of a beam is shown in the given figure. The absolute maximum bending moment in the beam is
29956. A locomotive has four pairs of driving wheels carrying an axle load of 24 x 104 N. The maximum load that can be pulled if the coefficient of friction is 1/6, is
29957. A bar of circular cross-section of diameter D is subjected to a torque T at B as shown in the figure given. What is the angle of twist at A?
29958. Consider the following statements regarding Plane Table surveying :
1. It is less accurate than chain surveying.
2. It is not necessary to do accurate centering of plane table for small scale survey.
3. Compass rule may be made use for adjusting the plane table transverse.
4. From the instrument station, resectors are drawn to plot the position of object in the field.
Of these statements :
29959. A pin-jointed tower truss is loaded as shown in the given figure. The force induced in the member DF is
29960. The first Muslim invader to India?
29961. A particle of mass 3 kg moving in a straight line decelerates uniformly from a speed of 40 m/s to 20 m/s in a distance of 300 m. Before it comes to rest, it will travel a further distance pf
29962. For designing end bearing piles of square cross-section in clays having average unconfmed compressive strength of 6 t/m2, the net ultimate bearing capacity may be taken as
29963. The side AD of the square block ABCD as shown in the given figure is fixed at the base and it is under a state of simple shear causing shear stress τ and shear strain π, where The distorted shape is AB'C'D. The diagonal strain (linear) will be
29964. Consider the following statements :
Collision diagram is used to
1. study accident pattern
2. eliminate accidents
3. determine remedial measures
4. make statistical analysis of accidents
Of these statements :
29965. Consider the following statements :
1. An ascending gradient of 1 in 100 meets an ascending gradient of 1 in 120 to form a Valley curve.
2. A falling gradient of 1 in 25 meets a falling gradient of 1 in 50 to form a summit curve.
3. The length of summit curve is determined on the basis of head light sight distance.
Which one of the statements given above is/are correct ?
29966. The rectangular block shown in the given figure is subjected to pure shear to intensity 'q'. If BE represents the i principal plane and the principal stresses are σ1, σ2 ; then the values of θ, σ1 and σ2 will be respectively.
29967. The maximum energy stored at elastic limit of a material is called
29968. If the pressure carried by a CBR specimen at 2.5 mm penetration is 3.5 N/mm2, the CBR of the soil is
29969. If any question arises as to the age of a judge of a High Court, the question shall be decided by the?
29970. Activated sludge is the
29971. Which are the critical activities of the bar chart shown above ?
29972. What is the effective height of a free-standing masonry wall for the purpose of computing slenderness ratio ?
29973. To generate 10, 000 hp under a head of 81 m while working at a speed of 500 rpirt, the turbine of choice would be
29974. Consider the following statements :
Sand in mortar is needed for
1. decreasing the quantity of cement.
2. reducing shrinkage.
3. decreasing the surface area of the binding material.
4. increasing the strength.
Of these statements :
29975. The given figure shows gradually varied flow in an open channel with a beak in bed slope. Types of water surface profiles occurring from left to right are
29976. Consider the following strengths of concrete :
1. Cube strength
2. Cylinder strength
3. Split-tensile strength
4. Modulus of rupture
The correct sequence in decreasing order of these strengths is
29977. A reinforced concrete slab is 75 mm thick. The maximum size of reinforcement bar that can be used is
29978. Consider the following methods of preservation of timber :
1. Dipping
2. Brushing or spraying
3. Pressure impregnation
The correct sequence in decreasing order of the effectiveness of these methods of preservation is
29979. Purlins are provided, in industrial buildings, over roof trusses to carry dead loads, live loads and wind loads. As per IS code, what are they assumed to be ?
29980. Ratio of bearing capacity of double Under Reamed (U.R.) pile to that of single U.R. pile is nearly
29981. A soil has a bulk density of 1.80 g/cm3 at water content of 5%. If the void ratio remains constant, then its bulk density for a water content of 10% will be
29982. The base width of a soil gravity dam is 25 m. The material of the dam has a specific gravity of 2.56 and the dam is designed as an elementary profile ignoring uplift. What is the approximate allowable height of the dam ?
29983. In a gusseted base, when the end of the column is machined smooth for complete bearing, the axial load is transferred to base slab :
29984. Which of the following assumptions are made in the analysis of jet impinging normally on a moving plate?
1. Friction between jet and plate is neglected
2. Flow is steady
3. Momentum of jet is unchanged
4. Plate moves at a constant velocity
Choose the correct answer using the codes given below :
29985. A 3000 m long line lying at an elevation of 450 m measures 10 cm on a vertical photograph.
The focal length of the camera is 21 cm. The scale of the photograph for the area having an elevation of 1000 m will be
29986. While driving a large number of piles in loose sand :
29987. Surface tension of water when in contact with air is 0.0737 N/m. The difference of pressure between the inside and outside of a droplet of rain water 1 mm in diameter is nearly equal to
29988. The upstream slope of an earth dam under steady seepage condition is
29989. What are the magnitudes of horizontal and vertical support reactions, respectively at support. A of the frame shown in figure below ?
29990. Consider the following statements :
Shrinkage of concrete depends upon the
1. relative humidity of the atmosphere.
2. passage of time.
3. applied stress.
Which of these statements is/are correct ?
29991. Consider the following statements :
Wind rose diagram is used for the purpose of
1. runway orientation.
2. estimating the runway capacity
3. geometric design of holding apron.
Of these statements :
29992. The discharge per metre width at the foot of a spillway is 10 m3/s at a velocity of 20 m/s. A perfect free hydraulic jump will occur at the foot of the spillway when the tail water depth is approximately equal to
29993. Which one of the following is the appropriate triaxial test to assess the immediate stability of an unloading problem, such as an excavation of a clay slope ?
29994. A mild steel flat subjected to a tensile force of 84 tonnes is connected to a gusset plate using rivets. If the forces required to shear a single rivet, to crush the rivet and to tear the plate per pitch length are 5000 kg, 8000 kg and 6000 kg respectively, then the number of rivets required is
29995. What does the confining pressure used in triaxial compression tests on an undisturbed soil sample represent ?
29996. The distance between two bench marks is 1000 m. If during levelling, the total error due to collimation, curvature and refraction is found to be + 0.120 m, then the magnitude of the collimation error is
29997. Mercury (density = 13600 kg/m3, σ = 0.49N/mm internal diameter open-ended capillary tube is inserted in the middle of the beaker into the mercury. The meniscus in the tube will be below the external mercury surface by how much distance?
29998. Which one of the following is considered to be an advantage of the heading and benching method of tunes construction ?
29999. In a close-coiled helical spring subjected to an axial load, other quantities remaining the same, if the wire diameter is doubled, then the stiffness of the spring when compared to the original one, will become
30000. The plastic section modulus of a rectangular section of width 100 mm and depth 12 mm is