GATE CE 2016 Set 1
GATE CE
1
The Optimistic Time (O), most likely Time (M) and Pessimistic Time (P) (in days) of
the activities in the critical path are given below in the format O-M-P.
The expected completion time (in days) of the project is _______.

2
The compound which is largely responsible for initial setting and early strength gain of
Ordinary Portland Cement is
3
Bull's trench kiln is used in the manufacturing of
4
The type of partial differential equation $${{{\partial ^2}p} \over {\partial {x^2}}} + {{{\partial ^2}p} \over {\partial {y^2}}} + 3{{{\partial ^2}p} \over {\partial x\partial y}} + 2{{\partial p} \over {\partial x}} - {{\partial p} \over {\partial y}} = 0$$ is
5
Newton-Raphson method is to be used to find root of equation $$\,3x - {e^x} + \sin \,x = 0.\,\,$$ If the initial trial value for the root is taken as $$0.333,$$ the next approximation for the root would be _________ (note: answer up to three decimal)
6
The solution of the partial differential equation $${{\partial u} \over {\partial t}} = \alpha {{{\partial ^2}u} \over {\partial {x^2}}}$$ is of the form
7
Type $${\rm I}{\rm I}$$ error in hypothesis testing is
8
If the entries in each column of a square matrix $$M$$ add up to $$1$$, then an eigenvalue of $$M$$ is
9
The magnitudes of vectors P, Q and R are 100 kN, 250 kN and 150 kN, respectively as
shown in the figure.
The respective values of the magnitude (in kN) and the direction (with respect to the x-axis)
of the resultant vector are

10
A rigid member ACB is shown in the figure. The member is supported at A and B by
pinned and guided roller supports, respectively. A force P acts at C as shown. Let RAh
and RBh be the horizontal reactions at supports A and B, respectively, and RAv be the
vertical reaction at support A. Self- weight of the member may be ignored.
Which one of the following sets gives the correct magnitudes of RAv, RBh and RAh ?

11
Effluent from an industry 'A' has a pH of 4.2. The effluent from another industry 'B'
has double the hydroxyl (OH-)
ion concentration than the effluent from industry 'A'. pH
of effluent from the industry 'B' will be _______.
12
A sector gate is provided on a spillway as shown in the figure. Assuming g = 10 m/s2, the resultant
force per meter length (expressed in kN/m) on the gate will be __________


13
The porosity (n) and the degree of saturation (S) of a soil sample are 0.7 and 40%,
respectively. In a 100 $$m^3$$ volume of the soil, the volume (expressed in $$m^3$$) of air is _____.
14
A concrete gravity dam section is shown in the figure. Assuming unit weight of water
as 10$$kN/m^3$$ and unit weight of concrete as 24$$kN/m^3$$, the uplift force per unit length of
the dam (expressed in kN/m) at PQ is____.


15
For $$M25$$ concrete with creep coefficient of $$1.5,$$ the long-term static modulus of elasticity (expressed in $$MPa$$) as per provisions of $$IS:$$ $$456-2000$$ is ______________
16
In shear design of an $$RC$$ beam, other than the allowable shear strength of concrete $$\left( {{\tau _c}} \right),$$there is also an additional check suggested in $$IS$$ $$456$$-$$2000$$ with respect to the maximum permissible shear stress $$\left( {{\tau _{c\,\,\max }}} \right).$$ The check for $${{\tau _{c\,\,\max }}}$$ is required to take care of
17
A reinforced concrete $$(RC)$$ beam with width of $$250$$ $$mm$$ and effective depth of $$400$$ $$mm$$ is reinforced with $$Fe415$$ steel. As per the provisions of $$IS$$ $$456$$ - $$2000,$$ the minimum and maximum amount of tensile reinforcement (expressed in $$m{m^2}$$ ) for the section are, respectively
18
The semi-compact section of a laterally unsupported steel beam has an elastic section modulus, plastic section modulus and design bending compressive stress of $$500\,\,c{m^3},\,\,650\,\,c{m^3}$$ and $$200$$ $$MPa,$$ respectively. The design flexural capacity (expressed in $$kNm$$) of the section is ___________________
19
Two plates are connected by fillet welds of size $$10$$ $$mm$$ and subjected to tension, as shown in the sketch. The thickness of each plate is $$12$$ $$mm.$$ The yield stress and the ultimate tensile stress of steel are $$250$$ $$MPa$$ and $$410$$ $$MPa,$$ respectively. The welding is done in the workshop $$\left( {{\gamma _{mw}} = 1.25} \right).$$

As per the Limit State Method of $$IS$$ $$800:2007,$$ the minimum length (rounded off to the nearest higher multiple of $$5$$ $$mm$$) of each weld to transmit a force $$P$$ equal to $$270$$ $$kN$$ (factored) is
20
A $$3$$ $$m$$ long simply supported beam of uniform cross section is subjected to a uniformly distributed load of $$w = 20$$ $$kN/m$$ in the central $$1$$ $$m$$ as shown in the figure.

If the flexural rrigidity $$(EI)$$ of the beam is $$30 \times {10^6}\,\,N$$ - $${m^2},$$ the maximum slope (expressed in radians) of the deformed beam is
21
Consider the plane truss with load $$P$$ as shown in the figure. Let the horizontal and vertical reactions at the joint $$B$$ be $$HB$$ and $${V_B},$$ respectively and $${V_C}$$ be the vertical reaction at the joint $$C.$$

Which one of the following sets gives the correct values of $${V_B},\,\,{H_B}$$ and $${V_C}$$?
22
A plane truss with applied loads is shown in the figure.

The members which do not carry any force are
23
A propped cantilever of span $$L$$ carries a vertical concentrated load at the mid-span. If the plastic moment capacity of the section is $${M_P}$$, the magnitude of the collapse load is
24
Two beams $$PQ$$ (fixed at $$P$$ and with a roller support at $$Q,$$ as shown in Figure $$I,$$ which allows vertical movement) and $$XZ$$ (with a hinge at $$Y$$) are shown in the Figures $$I$$ and $$II$$ respectively. The spans of $$PQ$$ and $$XZ$$ are L and $$2L$$ respectively. Both the beams are under the action of uniformly distributed load $$(W)$$ and have the same flexural stiffness, $$EI$$ (where, $$E$$ and $$I$$ respectively denote modulus of elasticity and moment of inertia about axis of bending). Let the maximum deflection and maximum rotation be $${\delta _{\max 1}}$$ and $${\theta _{\max 1}},$$ respectively, in the case of beam $$PQ$$ and the corresponding quantities for the beam $$XZ$$ be $${\delta _{\max 2}}$$ and $${\theta _{\max 2}},$$ respectively.


Which one of the following relationships is true?