GATE PI 2009

## GATE PI

Hot chamber die casting is NOT suited for

View Question
A solid cylinder of diameter $$D$$ and height equal to $$D,$$ and a solid cube of side $$L$$ are being sand cast by usin

View Question
The value of the determinant $$\left| {\matrix{
1 & 3 & 2 \cr
4 & 1 & 1 \cr
2 & 1 &

View Question
The value of $${x_3}$$ obtained by solving the following system of linear equations is
$$${x_1} + 2{x_2} - 2{x_3} = 4$$

View Question
The total derivative of the function $$'xy'$$ is

View Question
The line integral of the vector function $$\overrightarrow F = 2x\widehat i + {x^2}\widehat j\,\,$$ along the $$x$$ - a

View Question
The homogeneous part of the differential equation $$\,{{{d^2}y} \over {d{x^2}}} + p{{dy} \over {dx}} + qy = r\,\,$$ ( $$

View Question
The solution of the differential equation $${{{d^2}y} \over {d{x^2}}} = 0$$ with boundary conditions
(i) $${{dy} \over

View Question
During the numerical solution of a first order differential equation using the Euler (also known as Euler Cauchy) method

View Question
Consider steady flow of water in a situation where two pipe lines (pipe $$1$$ and pipe $$2$$) combine into a single pipe

View Question
The pressure drop for laminar flow of a liquid in a smooth pipe at normal temperature and pressure is

View Question
Heat is being transferred convectively from a cylindrical nuclear reactor fuel rod of $$50mm$$ diameter to water at $${7

View Question
Autogeneous gas tungsten arc welding of a steel plate is carried out with welding current of $$500A,$$ voltage of $$20V,

View Question
Resistance spot welding of two steel sheets is carried out in lap joint configuration by using a welding current of $$3$

View Question
Resistance spot welding of two steel sheets is carried out in lap joint configuration by using a welding current of $$3$

View Question
Diamond cutting tools are not recommended for machining of ferrous metals due to

View Question
In an orthogonal machining operation , the tool life obtained is $$10min$$ at a cutting speed of $$10m/min,$$ while at $

View Question
An orthogonal operation is carried out at $$20m/min$$ cutting speed, using a cutting tool of rake angle $$15deg$$. The c

View Question
An orthogonal operation is carried out at $$20m/min$$ cutting speed, using a cutting tool of rake angle $$15deg$$. The c

View Question
The total angular movement (in degrees) of a lead screw with a pitch of $$5.0mm$$ to drive the work table by a distance

View Question
A titanium sheet of $$5.0mm$$ thickness is cut by wire cut $$EDM$$ process using a wire of $$1.0mm$$ diameter. A uniform

View Question
Anisotropy in rolled components is caused by

View Question
Using direct extrusion process, a round billet of $$100$$ $$mm$$ length and $$50mm$$ diameter is extruded. Considering a

View Question
A disc of $$200$$ $$mm$$ diameter is blanked from a strip of an aluminium alloy of thickness $$3.2$$ $$mm.$$ The materia

View Question
An autocollimator is used to

View Question
Match the following

View Question