You Are On Multi Choice Question Bank SET 902
45102. A jet of water issues from a 5 cm diameter nozzle, held vertically upwards, at a velocity of 20 m/sec. If air resistance consumers 10% of the initial energy of the jet, then it would reach a height, above the nozzle, of
45103. A given material has Young's modulus E, modulus of rigidity G and Poisson's ratio of Young's modulus to modulus of rigidity of this material is,
45105. Which of the following instruments have both horizon glass and index glass ?1. Optical square2. Line ranger3. Box sextant4. PedometerSelect the correct answer using the code given below :
45106. Which of the following equations are used for the derivation of the differential equation for water surface profile in open channel flow :1. Continuity equation2. Energy equation3. Momentum equationSelect the correct answer using the codes given below :
45107. If the difference of height between two points is 1 m and the slope distance between them is 100 m, then accuracy of slope correction determination could be 1 in 1, 00, 000, provided the heights are measured with an accuracy of
45108. Which one of the following is a method of extending the length of record for a frequency curve at a station ?
45109. Consider the following statements regarding a simply supported beam subjected to a uniformly distributed load over the entire span :1. The bending moment is maximum at the central position.2. The shear force is zero at the central position.3. The slope is maximum at the middle position.Of these statements :
45110. Given that:d = effective depth, b = width and D = overall depth.The maximum area of compression reinforcement in a beam is
45112. A column section as indicated in the given figure is loaded with a concentrated load at a point 'F' so as to produce maximum bending stress due to eccentricities about xx axis and yy axis as 5 t/m2 and 8 t/m2 respectively. If the direct stress due to loading is 15 t/m2 (compressive), then the intensity of resultant stress at the corner 'B' of the column section is
45113. A vertical gate 6 m x 6 m holds water on one side with the free surface at its top. The moment about the bottom edge of the gate of the water force will be (v is the specific weight of water)
45114. An isosceles triangular plate of base 3 m and altitude 3 m is immersed vertically in an oil of specific gravity 0.8. The base of the plate coincides with the free surface of oil. The centre of pressure will lie at a distance of (from free surface)
45115. Consider the following statements regarding the swedish circle method of analysing stability of slopes :1. It is a general method of analysing stability of slopes.2. It satisfied only the overall moment equation of equilibirum.3. It considers the forces action on the sides of individual slices.4. It gives a factor of safety which are on the safeside.Of the statements :
45117. What type of noise can be abated by providing lining on walls and ceiling with sound absorbing material?
45118. Which of the following treatment(s) will be indicated for a rural water supply from a deep groundwater source ?1. Sedimentation.2. Alum dosage.3. Potassium permanganate dosing.4. Bleaching powder application.Select the correct answer using the codes given below :
45120. For a circular column having its ends hinged, the slenderness ratio is 160. The l/d ratio of the column is
45121. In the PERT analysis, which one of the following is followed by the time estimate of activities and probability of either occurrance ?
45122. The cable for a prestressed concrete simply supported beam subjected to uniformly distributed load over the entire span should ideally be :
45123. The effort 'P' to be applied horizontally to pull a weight 'W' on a plane inclined at an angle α with the horizontal is given by (tan θ is the coefficient of friction)
45124. If two triangulation signals of 6.75 m height each, are to be just visible over ground mutually, what is the maximum distance between their locations on the ground surface ?
45127. The changes that take place during the process of consolidation of a saturated clay would include
45128. Consider the following statements :1. Water hammer can develop in an unsteady flow only.2. Time required for rapid closure of valve is between 2 L/C and 4 L/C where L is the pipe length and C is the celerity of wave.3. In flexible water column theory, pipe may expand and water may compress in the flow system.4. Joukowskyhas carried out the mathematical analysis of water hammer.Which is the above statements relating to water hammer in pipes are correct ?
45129. It is required to determine by periodical soundings, the rate at which silting or scouring is taking place in a harbour. Which one of the following methods is best suited for locating the positions of the soundings?
45130. For the motion represented by the graph shown in the given figure, the numerical value of velocity , when acceleration will be
45131. A star is observed at its upper culmination when it is north of zenith. The latitude of the place of observation is 30°N and declination of the star is 50°N. The zenith distance of the star is
45132. For flow under a sluice gate where the upstream depth is 1.2 m and the depth at vena contracta is 0.3 m, the discharge per meter width would be nearly
45133. At what value of saturation does the zero air voids curve in a compaction test represent the dry density?
45135. The saturated and dry densities of a soil are respectively 2000 kg/m3 and 1500 kg/m3. The water content (in percentage) of the soil in the saturated state would be
45136. The beam ABC shown in the given figure is horizontal. The distance to the point of contraflexure from the fixed end 'A' is
45137. A timber beam of rectangular section 100 mm x 50 mm is simply supported at the ends, has a 30 mm x 10 mm steel strip securely fixed to the top surface as shown in the given figure.The centroid of the "Equivalent timber beam" in this case from the tope surface
45141. Which among the following assumptions are made in the design roof trusses ?1. Roof truss is restrained by the reactions2. Axes of the members meeting at a joint intersect at a common point3. Riveted joints act as frictionless hinges4. Loads act normal to roof surfaceSelect the correct answer using the codes given below:
45142. A ladder AB of weight W and length l is held in equilibrium by a horizontal force P as shown in the figure given above. Assuming the ladder to be idealized as a homogeneous rigid bar and the surfaces to be smooth, which one of the following is correct ?
45144. Wearing locations of rails and their reasons are listed below :1. Wear at end of rails : Loose fish bolts2. Wear at sides of rail head : Constant lerake application3. Wear on the top of rail head on tangent truck : Rigidity of wheel base4. Wear on top of rail head on curves : Lesser area of contact between wheel and rail Which of the pairs given above are correctly matched ?
45147. In a laminar boundary layer, the velocity distribution can be assumed to be given, in usual notations, asWhich one of the following is the correct expression for the displacement thickness δ for this boundary layer ?
45148. In a plate load test, how is the ultimate load estimated from the load settlement curve on a log-log graph ?
45149. The standard Proctor compaction curve of a clay is depicted in the above figure. Points A, B and C correspond to three compaction states of the soil, which fall on this curve. For which point(s) is the coefficient of permeability minimum ?
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