The product of matrices ${\left(PQ\right)}^{-1}P$ is
The general solution of $\frac{{d}^{2}y}{d{x}^{2}}+y=0$ is
A mild steel specimen is under uni-axial tensile stress. Young’s modules and yield stress for mild steel are 2 × 10^{5} MPa and 250 Mpa respectively. The maximum amount of strain energy per unit volume that can be stored in this specimen without permanent set is
A reinforced concrete structure has to be constructed along a sea coast. The minimum grade of concrete to be used as per IS: 456-2000 is
In the design of a reinforced concrete beam the requirement for bond is not getting satisfied. The economical option to satisfy the requirement for bond is by
The shape of the cross-section, which has a largest shape factor, is
Group symbols assigned to silty sand and clayey sand are respectively
When a retaining wall moves away from the back-fill, the pressure exerted on the wall is termed as
Compaction by vibratory roller is the best method of compaction in case of
A person standing on the bank of a canal drops a stone on the water surface. He notices that the disturbance on the water surface in not traveling up-stream. This is because the flow in the canal is
A flood wave with a known inflow hydrograph is routed through a large reservoir. The outflow hydrograph will have
A stable channel is to be designed for a discharge of Q m^{3}/s with silt factor f as per Lacey’s method. The mean flow velocity (m/s) in the channel is obtained by
The base width of an elementary profile of gravity dam of height H is b. The specific gravity of the material of the dam is G and uplift pressure coefficient is K. the correct relationship for no tension at the heel is given by
Two primary air pollutants are
Two biodegradable components of municipal solid waste are
The specific gravity of paving bitumen as per IS:73 – 1992 lies between
A combined value of flakiness and elongation index is to be determined for a sample of aggregates. The sequence in which the two tests are conducted is
The capacities of “One-way 1.5m wide sidewalk (persons per hour)” and “One-way 2-lane urban road (PCU per hour, with no frontage access, no standing vehicles and very little cross traffic)” are respectively
The shape of the STOP sign according to IRC: 67-2001 is
The type of surveying in which the curvature of the earth is taken into account is called