How high should a helicopter pilot rise at a point. A just to see the horizon at point B, if the distance AB iskm ?

What does the Williot-Morr diagram yield ?

What are the gases produced by landfills primarily comprised of?

Which one of the following statements is true to trickling filter sludge ?

A parabolic vertical curve is to be set out connecting two uniform grades of +0.and +.0%. The rate of change of grade is to be 0.perm. The length of the curve will be

General shrinkage in cement concrete is caused by

A good brick when immersed in water bath forhours, should not absorb more than

The following methods are used for structural analysis :
Macaulay method
Column analogy method
Kani's method
Method of sections
Those used for indeterminate structural analysis would include

A three-hinged loaded semicircular arch ACB is shown in the figure given. What is the shearing force at the hinge C ?

A cantilever beam 'A' with rectangular cross-section is subjected to a concentrated load at its free end. If width and depth of another cantilever beam 'B' are twice those of beam A, then the deflection at free end of the beam 'B' as compared to that of 'A' will be

Consider the following statements regarding specific energy of flow in an open channel :
There is only one specific energy curve for a given channel.
Alternate depths are the depths of flow at which the specific energy is the same.
Critical flow occurs when the specific energy is minimum.
Of these statements :

Consider the following statements relating to triaxial tests :
Change in length of the specimen in a triaxial shear test is required to be accounted for in the calculation of stresses at failure.
In 'Drained Triaxial Shear Test', drainage is permitted under a specified all-round pressure until consolidation is complete. The principal stress difference is then applied with no drainage being permitted.
Unconfined compression test is a special case of triaxial shear test.
Of these statements :

The local sidereal time (LST) is always

A flownet for an earth dam on impervious foundation consists of 4 flow channels andequipotential drops. The full reservoir level ism above the downstream horizontal filter. Given that horizontal permeability is 9 x 10^-6 m/s and vertical permeability is 1 x 10^-6 m/s, the quantity of seepage through the dam will be

In the case of S₂ water surface profile (y = depth of flow, y₀ = normal depth, y_c = critical depth)

A bar of square section is subjected to a pull ofkg. If the maximum allowable shear stress on any section iskg/cm², then the side of the square section will be

Consider the following statements :
Alum coagulation decreases the alkalinity of water.
Alum coagulation increases permanent hardness of water.
Alum coagulation decreases pH of water.
Alum coagulation produces aluminium hydroxide flocks in the flocculation process.
Which of the statements given above are correct ?

A motor shaft rotating with a speed ofrpm decelerates uniformly when the motor is switched off and stops insec. The number of revolutions made by the shaft in this time would be

What is the correct sequence of the following steps in the graphical determination of stresses in the members of a loaded plane truss ?
Vector diagram to determine the end reactions.
Space diagram.
Stress diagram.
Select the correct answer using the codes given below :

The shear modulus of a material is half of its Young's modulus. What is the value of its Poisson's ratio ?

A summit vertical curve is to be set joining + 2 percent grade with -3 percent grade. If the tangents interest at an elevation ofm and the rate of change of grade is - 1 percent perm, then the elevation of the beginning point of the vertical curve will be

A clay sample has a void ratio of 0.in dry state. The specific gravity of soil solids is 2.What is the shrinkage limit of the soil ?

Two closed-coil springs of stiffness s and 2s are arranged in series in one case and in parallel in the other case. The ratio of stiffness of springs connected in series to parallel is

Which of the following pairs regarding the defects in timber are correctly matched ?
Upsets....due to overmaturity and unventilated star age of wood.
Fwciness....due to crushing of fibres running transversel.
Star shakes....radial splits widest at the circumference and diminishing towards the centre.
Heart shakes....cracks widest at the centre and diminishing towards the outer circumference.
Select the correct answer using the codes given below.

Uniformity coefficient of filter sand is given by :

Consider the following factors :
Provision of a suitable slope to the top of the sill.
Proper throating of the sill to throw off the water outside.
Giving a projection of not less thanmm to the sill.
Providing damp-proof course below the sill to check the entry of moisture inside the main wall.
Those considered while constructing a brick sill would include

A three-hinged loaded semicircular arch ACB is shown in the figure given. What is the shearing force at the hinge C ?

Undisturbed soil samples are required for conducting

Consider the following statements :
Alum coagulation decreases the alkalinity of water.
Alum coagulation increases permanent hardness of water.
Alum coagulation decreases pH of water.
Alum coagulation produces aluminium hydroxide flocks in the flocculation process.
Which of the statements given above are correct ?

Consider the following statements :
In the laboratory consolidation test, initial compression is the result of displacement of soil particles.
Primary consolidation is due to dissipation of pore water pressure.
Secondary compression starts after complete dissipation of pore water pressure.
Primary consolidation and secondary compression occur simultaneously.
Which of the statements given above are correct ?

A three-hinged loaded semicircular arch ACB is shown in the figure given. What is the shearing force at the hinge C ?

The runway length after correcting for elevation and temperature ism. If the effective gradient on runway is 0.5 per cent, then the revised runway length will be

A motor shaft rotating with a speed ofrpm decelerates uniformly when the motor is switched off and stops insec. The number of revolutions made by the shaft in this time would be

What is the correct sequence of the following steps in the graphical determination of stresses in the members of a loaded plane truss ?
Vector diagram to determine the end reactions.
Space diagram.
Stress diagram.
Select the correct answer using the codes given below :

A parabolic vertical curve is to be set out connecting two uniform grades of +0.and +.0%. The rate of change of grade is to be 0.perm. The length of the curve will be

A parabolic vertical curve is to be set out connecting two uniform grades of +0.and +.0%. The rate of change of grade is to be 0.perm. The length of the curve will be

Two closed-coil springs of stiffness s and 2s are arranged in series in one case and in parallel in the other case. The ratio of stiffness of springs connected in series to parallel is

A water jet 0.m² in area has a velocity ofm/s. If the jet impinges normally on a plate which is moving at a velocity 5 m/s in the direction of the jet, what is the force on the plate due to this impact ? (Density =kg/m³)

General shrinkage in cement concrete is caused by

A good brick when immersed in water bath forhours, should not absorb more than

A good brick when immersed in water bath forhours, should not absorb more than

The local sidereal time (LST) is always

Consider the following statements relating to triaxial tests :
Change in length of the specimen in a triaxial shear test is required to be accounted for in the calculation of stresses at failure.
In 'Drained Triaxial Shear Test', drainage is permitted under a specified all-round pressure until consolidation is complete. The principal stress difference is then applied with no drainage being permitted.
Unconfined compression test is a special case of triaxial shear test.
Of these statements :

The local sidereal time (LST) is always

What is the correct sequence of the following steps in the graphical determination of stresses in the members of a loaded plane truss ?
Vector diagram to determine the end reactions.
Space diagram.
Stress diagram.
Select the correct answer using the codes given below :

A simply supported rectangular beam of span 'L' and depth 'd' carries a central load 'W' What ratio of maximum deflection to maximum bending stress is

A right-angled triangular channel, symmetrical in section about the vertical, carries a discharge of 5 m³ /s with a velocity of 1.m/s. What is the approximate value of the Froude number of the flow ?

A sewer is laid from a manhole A to a manhole B,m apart along a downward gradient of 1 inIf the reduced level of the invert at A is 205.m and the height of the boring rod is 3 m, then, reduced level of the sight rail at B, is

Which one of the following would contain water with the maximum amount of turbidity ?

A short bar element of uniform cross-section is subjected to concentrated axial forces at its two ends. The longitudinal stress distribution on the cross-section is uniform at