126. Denehy's groyne is a special type of groyne which is :
127. As a natural material, timber is which one of the following ?
128. Consider the implicit details between, before and after successive steps in/within the order while doing time computations on a CPM network. (FP => Forward Pass; BP => Backward Pass; LET => Late Event Time; EET => Early Event Time; TF => Total Float; PD => Project Duration; AD => Activity Duration)
The correct sequence of computation would be
129. A retaining wall 8 m high with a smooth vertical back retains a clay back fill with C' = 15 kN/m2, φ = 15° and γ = 18 kN/ m3. (Given sin 15° ≅ 0.25). The pressure at the top will, nearly, be equal to
130. In a compression member, plate element may buckle locally before the entire member fails. To avoid this, which of the following recommendations are made ?
1. Thickness of members is taken in terms of lengths of compression members
2. Length of element is increased
3. Length of member is increased
4. Outstand is decreased
Select the correct answer using the codes given below:
131. The deflection at the free end of a cantilever of rectangular cross-section due to certain loading of 0.8 cm. If the depth of the section is doubled keeping the width the same, then the deflection at the free end due to the same loading will be
132. Self-purification of running streams may be due to
133. At a point in a strained material, if two mutually perpendicular tensile stresses of 2000 kg/cm2 and 1000 kg/cm2 are acting, then the intensity of tangential stress on a plane inclined at 15° to the axis of the minor stress will be :
134. The rich source of energy which never causes atmospheric pollution is?
135. The combustible material at the tip of a safety match stick is?
136. How are concrete mixers specified ?
137. In photogrammetric surveying, the image of the top of the hill is 90 mm, from the principal point of the photograph. If the elevation of the top of the hill is 500 m and the flying height is 5000 m above datum, then the relief displacement is
138. The phenomenon of decreased resistance of a material due to reversal of stress is called
139. A mild steel bar is in three parts, each 20 cm long. The diameters of parts AB, BC and CD are 2 cm, 1 cm and 3 cm respectively. The bar is subjected to an axial pull of 4t as shown in the given figure. If E = 2 x 106 kg/cm2 and the elongations in the three parts of the bar are Δ1, Δ2 and Δ3 respectively, then the ratio of the greatest to the least of these elongations will be
140. At the same mean velocity, what is the ratio of head loss per unit length for a sewer pipe flowing full to that for the same pipe flowing half full ?
141. Gigantism is caused by the excessive production of ......... in childhood?
142. Which of the following generals of Alauddin Khilji conquered Deccan a number of times?
143. Consider the following statement: High early strength of cement is obtained as a result of
1. fine grinding.
2. decreasing the lime content
3. burning at higher temperatures
4. increasing the quantity of gypsum.
Of these statements :
144. A prismatic beam is shown in the figure. Consider the following statements :
1. The structure is unstable.
2. The bending moment is zero at supports and internal hinge.
3. It is mechanism.
4. It is statically indeterminate.
Which of the statements given above is/are correct ?
145. The moment of inertia of a given rectangular area is minimum about
146. If the efficiencies of BOD removal of first-stage and second-stage trickling filters are each 65.0%, then what is the overall BOD removal efficiency of these filters ?
147. Which one of the following tests can be carried out at the construction site to determine the dynamic elastic properties of soil ?
148. The organizer of young Italy Movement .........?
149. Consider the following statements :
A high lime content in a composite cement-lime mortor results in
1. slow hardening.
2. quick setting.
3. weaker mortar.
Of these statements :