UPSC Civil Service Exam Questions Questions

• The maximum energy stored at elastic limit of a material is called
• 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 :
• Ratio of bearing capacity of double Under Reamed (U.R.) pile to that of single U.R. pile is nearly
• 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 :
• A horizontal rod AB carries three loads of 3.0 kg, 7.0 kg and 10.0 kg at distances of 2.0 cm, 9.0 cm and 15 cm respectively from A where it is hinged. Neglecting the weight of the rod, which is the point at which the rod will be balance?
• Two simply supported beams B1 and B2 have spans l and 2l respectively. Beam B1 has a cross-section of 1 x 1 units and beam B2 has a cross-section of 2 x 2 units. These beams are subjected to concentrated loads W each at the centre of their spans. The ratio of the maximum flexural stress in these beams is
• 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
• 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
• A cylindrical shell made of mild steel plate of 100 cm diameter is to be subjected to an internal pressure of 10 kg/cm2. If the material yields at 2000 kg/cm2, assuming factor of safety as four and using maximum principal stress theory, thickness of the plate will be
• In the force system shown in the figure, the force CA should be
• 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
• The graphical condition for equilibrium of concurrent forces is that
• A close-coiled helical spring with n coils, mean radius R and diameter d is subjected to an axial load W. What is the compression in the spring?
• The plastic modulus of a section is 5 x 10-4m3. Its shape factor is 1.2 and the plastic moment capacity is 120 kNm. What is the value of the yield stress of the material?
• 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
• 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?
• Activated sludge is the
• 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
• For total reaction time of 2.5 seconds, coefficient of friction 0.35, design speed 80 km/h, what is the stopping sight distance on a highway?
• Which are the critical activities of the bar chart shown above?