Recent activity by akshia

A two lane, one-way road with radius of $50$ m is predominantly carrying lorries with wheelbase of $5$ m. The speed of lorries is restricted to be between $60$ kmph and $...

A super-elevation $e$ is provided on a circular horizontal curve such that a vehicle can be stopped on the curve without sliding. Assuming a design speed $v$ and maximum ...

A road is being designed for a speed of $110$ km/hr on a horizontal curve with a super elevation of $8 \%$. If the coefficient of side friction is $0.10$, the minimum rad...

The perception-reaction time for a vehicle travelling at $90$ km/h, given the coefficient of longitudinal friction of $0.35$ and the stopping sight distance of $170$ m (a...

The base length of the runway at the mean sea level $\text{(MSL)}$ is $1500 \; \text{m}.$ If the runway is located at an altitude of $300 \; \text{m}$ above the $\text{(M...

Consider the following statements $(\mathrm{P})$ and $(\mathrm{Q})$ :$(\mathrm{P})$ : Fly ash and ground granulated blast furnace slag can be used as mineral admixtures i...

Consider the function given below and pick one or more CORRECT statement(s) from the following choices.$$f(x)=x^{3}-\frac{15}{2} x^{2}+18 x+20$$$f(x)$ has a local minimum...

The figure shows a network diagram for a construction project. The activities $\mathrm{A}$, $\mathrm{B}$, $\mathrm{C}, \mathrm{D}, \mathrm{E}$, and $\mathrm{F}$ are repre...

If the Fore Bearing of the lines $AB$ and $BC$ are $60^{\circ}$ and $122^{\circ}$, respectively, then the interior angle $\angle \mathrm{ABC}$ (in degrees) is $\_\_\_\_\_...

​​​​​"Why do they pull down and do away with crooked streets, I wonder, which are my delight, and hurt no man living? Every day the wealthier nations are pulling down one...

​​​​​For a flowing fluid, a dimensionless combination of velocity $(V)$, length scale $(l)$, and acceleration due to gravity $(g)$ would be$\frac{V^{2}}{g l}$$\frac{V g}{...

​​​​​Fecal Coliform (FC) concentration in river water was measured as $10780 \: \: \mathrm{cfu} / 100 \mathrm{ ml}$ . The FC concentration after the conventional water tr...

Which of the following process(es) can be used for conversion of salt water into fresh water?MicrofiltrationElectrodialysisUltrafiltrationReverse osmosis

Henry's law constant for transferring $O_{2}$ from air into water, at room temperature, is $1.3 \dfrac{\text{mmol}}{\text{liter-atm}}$. Given that the partial pressure of...

In a water sample, the concentrations of $Ca^{2+}, Mg^{2+}$ and $\text{HCO}_{3}^{-}$ are $100$ $\text{mg/L}$, $36$ $\text{mg/L}$ and $122$ $\text{mg/L}$, respectively. Th...

A $2\%$ sewage sample (in distilled water) was incubated for $3$ days at $27^{\circ}C$ temperature. After incubation, a dissolved oxygen depletion of $10\:mg/L$ was recor...

A water treatment plant has a sedimentation basin of depth $3\:m$, width $5\:m$, and length $40\:m$. The water inflow rate is $500\:m^{3}/h$. The removal fraction of part...

The liquid forms of particulate air pollutants aredust and mistmist and spraysmoke and sprayfly ash and fumes

The shape of the most commonly designed highway vertical curve iscircular (single radius)circular (multiple radii)parabolicspiral

A highway designed for $\text{80 km/h}$ speed has a horizontal curve section with radius $\text{250 m}$. If the design lateral friction is assumed to develop fully, the r...

Two reservoirs are connected through a $930$ m long, $0.3$ m diameter pipe, which has a gate valve. The pipe entrance is sharp (loss coefficient $=0.5$) and the valve is ...

In a catchment, there are four rain-gauge stations, $P, Q, R$, and $S$. Normal annual precipitation values at these stations are $780$ mm, $850$ mm, $920$ mm, and $980$ m...

The $4$-hr unit hydrograph for a catchment is given in the table below. What would be the maximum ordinate of the S – curve (in $m^3/s$) derived from this hydrograph?$$\b...

The Muskingum model of routing a flood through a stream reach is expressed as $O_2 =K_0I_2+K_1I_1+K_2O_1$, where $K_0$, $K_1$ and $K_2$ are the routing coefficients for t...

An isolated $3-h$ rainfall event on a small catchment produces a hydrograph peak and point of inflection on the falling limb of the hydrograph at $7$ hours and $8.5$ hour...

A conventional flow duration curve is a plot betweenFlow and percentage time flow is exceededDuration of flooding and ground level elevationDuration of water supply in a ...

At a station, Storm I of $5$ hour duration with intensity $2$ cm/h resulted in a runoff of $4$ cm and Storm II of $8$ hour duration resulted in a runoff of $8.4$ cm. Assu...

At a station, Storm I of $5$ hour duration with intensity $2$ cm/h resulted in a runoff of $4$ cm and Storm II of $8$ hour duration resulted in a runoff of $8.4$ cm. Assu...

A $2$ km long pipe of $0.2$ m diameter connects two reservoirs. The difference between water levels in the reservoirs is $8$ m. The Darcy-Weisbachfriction factor of the p...

An isohyet is a line joining points ofequal temperatureequal humidityequal rainfall depthequal evaporation

The ratio of actual evapo-transpiration of potential evapo-transpiration is in the range$0.0$ to $0.4$$0.6$ to $0.9$$0.0$ to $1.0$$1.0$ to $2.0$

The total rainfall in a catchment of area $1000 \: km^2$, during a $6$ h storm, is $19$ cm. The surface runoff due to this storm computed from triangular direct runoff hy...

A culvert is designed for a flood frequency of $100$ years and a useful life of $20$ years. The risk involved in the design of the culvert (in percentage, up to two decim...

For routing of flood in a given channel using the Muskingum method, two of the routing coefficients are estimated as $C_0=-0.25$ and $C_1=0.55$. The value of the third co...

The lane configuration with lane volumes in vehicles per hour of a four-arm signalized intersection is shown in the figure. There are only two phases: the first phase is ...

Consider the four points $\text{P, Q, R and S}$ shown in the Greenshields fundamental speed-flow diagram. Denote their corresponding traffic densities by $k_{P}, k_{Q}, k...

Relationship between traffic speed and density is described using a negatively sloped straight line. If $v_{f}$ is the free flow speed then the speed at which the maximum...

On a road, the speed – density relationship of a traffic stream is given by $u=70-0.7k$ (where speed, $u$, is in $\text{km/h}$ and density, $k$ is in $\text{veh/km}$). At...

Vehicular arrival at an isolated intersection follows the Poisson distribution. The mean vehicular arrival rate is $2$ vehicle per minute. The probability ($\textit{round...

The free mean speed is $60 \mathrm{~km} / \mathrm{hr}$ on a given road. The average space headway at jam density on this road is $8 \mathrm{~m}$. For a linear speed-densi...

The figure presents the trajectories of six vehicles within a time-space domain. The number in the parentheses represents unique identification of each vehicle.The mean s...

A parabolic vertical crest curve connects two road segments with grades $+1.0 \%$ and $-2.0 \%.$ If a $200 \; \text{m}$ stopping sight distance is needed for a driver at ...

​​​​​In general, the outer edge is raised above the inner edge in horizontal curves forHighways, Railways, and TaxiwaysHighways and Railways onlyRailways and Taxiways onl...

A vertical summit curve on a freight corridor is formed at the intersection of two gradients, $+3.0 \%$ and $-5.0 \%$.Assume the following:Only large-sized trucks are all...

In levelling between two points $A$ and $B$ on the opposite banks of a river, the readings are taken by setting the instrument both at $A$ and $B$ , as shown in the table...

During determination of the bulk specific gravity of compacted bituminous specimen, the mass in air of the specimen is $1260 \mathrm{g}$ and volume is $525 \mathrm{~cm}^{...

For the clock shown in the figure, if$ \begin{array}{l} \mathrm{O}^{*}= \text {O Q S Z P R T, and } \\ \mathrm{X}^{*}=\text{X Z P W Y O Q,} \end{array}$then which one amo...

Pick the CORRECT eigen value(s) of the matrix $[A]$ from the following choices.$$[A]=\left[\begin{array}{ll} 6 & 8 \\ 4 & 2 \end{array}\right]$$$10$$4$$-2$$-10$

The peak of flood hydrograph due to a $3$-hour duration storm in a catchment is $180 \mathrm{~m}^{3} / \mathrm{s}$. The total rainfall depth is $6.6 \: \mathrm{cm}$. It c...

The analyses results of a water sample are given below. The non-carbonate hardness of the water (in $\mathrm{mg} / \mathrm{L}$ ) as $\mathrm{CaCO}_{3}$ is $\_\_\_\_\_\_\_...