GO Mechanical
Login
Register
@
Dark Mode
Profile
Edit my Profile
Messages
My favorites
Register
Activity
Questions
Tags
Users
Ask
New Blog
Blogs
Exams
Dark Mode
Filter
User Lakshman Patel RJIT
Wall
Recent activity
All questions
All answers
Exams Taken
All Blogs
Recent activity by Lakshman Patel RJIT
0
answers
ISRO2009-11
The transition Reynolds number for flow over a flat plate is $5\ast 10^5$. What is the distance from the leading edge at which transition will occur for flow of water with a uniform velocity of $1 \: \text{m/s}?\;($For water, the kinematic viscosity $v=0.86 \ast 10^{-6} \:\text{m}^2\text{/s})$ $0.43\;\text{m}$ $1\;\text{m}$ $43\;\text{m}$ $103\;\text{m}$
edited
in
Fluid Mechanics
Jun 26
isro2009
0
answers
ISRO2009-10
At the eye tip of a centrifugal impeller, blade velocity is $200 \: \text{m/s}$ while the uniform axial velocity at the inlet is $150 \: \text{m/s}$. If the sonic velocity is $300 \: \text{m/s}$, then the inlet Mach number of the flow will be $0.75$ $0.66$ $0.90$ $0.83$
edited
in
Power Engineering
Jun 26
isro2009
0
answers
ISRO2009-9
The radiative heat transfer rate per unit area $(W/m2)$ between two plane parallel grey surfaces (emissivity $0.9$) maintained at $400 \: \text{K}$ and $300 \: \text{K}$ is (Stefan Bottzman constant $\sigma=5.67 \times 10^{-6} \;W/m^2K^4)$ $1020$ $464$ $812$ $567$
edited
in
Heat Transfer
Jun 26
isro2009
0
answers
ISRO2009-8
The pressure drop for a relatively low Reynolds number flow in a $600 \: \text{mm}, \: 30 \: \text{m}$ long pipeline is $70 \;\text{kPa}$. What is the wall shear stress? $0 \;\text{Pa}$ $1400 \;\text{Pa}$ $700 \;\text{Pa}$ $350 \;\text{Pa}$
edited
in
Fluid Mechanics
Jun 26
isro2009
0
answers
ISRO2009-7
A metallic cube of side $10 \;\text{cm}$, density $6.8 \: gm/cc$ is floating in liquid mercury (density $13.6 \: \text{gm/cc}$), with $5 \;\text{cm}$ height of cube exposed above the mercury level. Water (density $1 \: \text{gm/cc}$) is filled over this, to submerge the cube ... of cube exposed above mercury level is $4.6 \;\text{cm}$ $5.4 \;\text{cm}$ $5.0 \;\text{cm}$ $5.8 \;\text{cm}$
edited
in
Fluid Mechanics
Jun 26
isro2009
0
answers
ISRO2009-6
A necessary precaution in selection of pumps for parallel operations is that $\text{H-Q}$ characteristics of both should be identical Both pumps should be centrifugal type Both pumps should be identical There should not be change from positive to negative slope in H-Q curve
edited
in
Power Engineering
Jun 26
isro2009
0
answers
ISRO2009-5
Across a normal shock Static pressure and the static temperature rise entropy remains constant velocity and static pressure decrease density and temperature decrease
edited
in
Fluid Mechanics
Jun 26
isro2009
0
answers
ISRO2009-4
The relation ${p^{V}}^{\gamma}=$ constant, where $\gamma$ is the ratio of the specific heats of ideal gas, is applicable to Any adiabatic process Only reversible adiabatic process Only irreversible adiabatic process Only isothermal process
edited
in
Heat Transfer
Jun 26
isro2009
0
answers
ISRO2009-3
The correct sequence of the centrifugal pump components through which the fluid flows is Impeller, Suction pipe, Foot valve and strainer, Delivery pipe Foot valve and strainer, Suction pipe, Impeller, Delivery pipe Impeller, Suction pipe, Delivery pipe, Foot valve and strainer Suction pipe, Delivery pipe, Impeller, Foot valve and strainer
edited
in
Power Engineering
Jun 26
isro2009
0
answers
ISRO2009-2
If the stream function is given by $\Psi=3xy$, then the velocity at a point $(2,3)$ will be $7.21 \: \text{unit}$ $18 \: \text{unit}$ $10.82 \: \text{unit}$ $54 \: \text{unit}$
edited
in
Fluid Mechanics
Jun 26
isro2009
0
answers
ISRO2009-1
A hydraulic press has a ram of $15 \: \text{cm}$ diameter and plunger of $1.5 \: \text{cm}$. It is required to lift a mass of $1000 \: \text{kg}$. The force required on plunger is nearly equal to $100\;\text{N}$ $1000\;\text{N}$ $10000\;\text{N}$ $10\;\text{N}$
edited
in
Fluid Mechanics
Jun 26
isro2009
0
answers
GATE Mechanical 2022 Set 2 | Question: 37
The lengths of members $\text{BC}$ and $\text{CE}$ in the frame shown in the figure are equal. All the members are rigid and lightweight, and the friction at the joints is negligible. Two forces of magnitude $Q> 0$ are applied as shown, each at the ... the following members do not carry any load (force)? $\text{AB}$ $\text{CD}$ $\text{EF}$ $\text{GH}$
retagged
in
Others
Mar 21
gateme-2022-set2
multiple-selects
0
answers
GATE Mechanical 2022 Set 2 | Question: 36
$A$ is a $3 \times 5$ real matrix of rank $2$. For the set ot homogeneous equations $Ax = 0$, where $0$ is a zero vector and $x$ is a vector of unknown variables, which of the following is/are true? The given ... size. The given set of equations will have infinitely many solutions. The given set of equations will have many but a finite number of solutions.
retagged
in
Others
Mar 21
gateme-2022-set2
multiple-selects
0
answers
GATE Mechanical 2022 Set 2 | Question: 19
The velocity field in a fluid is given to be $\vec{V} = \left ( 4xy \right )\hat{i} + 2\left ( x^{2} - y^{2} \right )\hat{j}$. Which of the following statement$(s)$ is/are correct? The velocity field is one-dimensional. The flow is incompressible. The flow is irrotational. The acceleration experienced by a fluid particle is zero at $(x = 0,y = 0)$.
retagged
in
Others
Mar 21
gateme-2022-set2
multiple-selects
0
answers
GATE Mechanical 2022 Set 2 | Question: 18
Which of these processes involve$(s)$ melting in metallic workpieces? Electrochemical machining Electric discharge machining Laser beam machining Electron beam machining
retagged
in
Others
Mar 21
gateme-2022-set2
multiple-selects
0
answers
GATE Mechanical 2022 Set 2 | Question: 17
Consider sand casting of a cube of edge length $a$. A cylindrical riser is placed at the top of the casting. Assume solidification time, $t_{s} \:\alpha\: V/A$, where $V$ is the volume and $A$ is the total surface area dissipating heat. If the top of the ... /radii of riser is/are acceptable? $\dfrac{a}{3}$ $\dfrac{a}{2}$ $\dfrac{a}{4}$ $\dfrac{a}{6}$
retagged
in
Others
Mar 21
gateme-2022-set2
multiple-selects
0
answers
GATE Mechanical 2022 Set 2 | Question: 16
A square plate is supported in four different ways (configurations $(P)$ to $(S)$ as shown in the figure). A couple moment $C$ is applied on the plate. Assume all the members to be rigid and mass-less, and all joints to ... one or more of the following support configurations? Configuration $(P)$ Configuration $(Q)$ Configuration $(R)$ Configuration $(S)$
retagged
in
Others
Mar 21
gateme-2022-set2
multiple-selects
0
answers
GATE Mechanical 2022 Set 1 | Question: 36
The system of linear equations in real $\left ( x,y \right )$ given by $\left ( x \: y \right )\begin{bmatrix} 2 &5 - 2 \alpha \\ \alpha & 1 \end{bmatrix} = \left ( 0\:0 \right )$ involves a real parameter $\alpha$ and has infinitely many non-trivial solutions for special ... $\alpha$? $x = 2, y = -2$ $x = -1, y = 4$ $x = 1, y = 1$ $x = 4, y = -2$
retagged
in
Others
Mar 21
gateme-2022-set1
multiple-selects
0
answers
GATE Mechanical 2022 Set 1 | Question: 19
Which of the following methods can improve the fatigue strength of a circular mild steel $\text{(MS)}$ shaft? Enhancing surface finish Shot peening of the shaft Increasing relative humidity Reducing relative humidity
retagged
in
Others
Mar 21
gateme-2022-set1
multiple-selects
0
answers
GATE Mechanical 2022 Set 1 | Question: 18
Which of the following additive manufacturing technique(s) can use a wire as a feedstock material? Stereolithography Fused deposition modeling Selective laser sintering Directed energy deposition processes
retagged
in
Others
Mar 21
gateme-2022-set1
multiple-selects
0
answers
GATE Mechanical 2022 Set 1 | Question: 17
Which of the following heat treatment processes is/are used for surface hardening of steels? Carburizing Cyaniding Annealing Carbonitriding
retagged
in
Others
Mar 21
gateme-2022-set1
multiple-selects
0
answers
GATE Mechanical 2022 Set 1 | Question: 16
Assuming the material considered in each statement is homogeneous, isotropic, linear elastic, and the deformations are in the elastic range, which one or more of the following statement(s) is/are TRUE? A body subjected to hydrostatic pressure ... a beam has zero shear force, then the corresponding portion of the elastic curve of the beam is always straight.
retagged
in
Others
Mar 21
gateme-2022-set1
multiple-selects
1
answer
GATE Mechanical 2022 Set 1 | GA Question: 5
A block with a trapezoidal cross-section is placed over a block with rectangular cross section as shown above. Which one of the following is the correct drawing of the view of the $\text{3D}$ object as viewed in the direction indicated by an arrow in the above figure? A. B. C. D.
answered
in
Spatial Aptitude
Mar 8
gateme-2022-set1
spatial-aptitude
patterns-in-two-dimensions
1
answer
GATE Mechanical 2022 Set 1 | GA Question: 10
In a $12$-hour clock that runs correctly, how many times do the second, minute, and hour hands of the clock coincide, in a $12$-hour duration from $3$ PM in a day to $3$ AM the next day? $11$ $12$ $144$ $2$
answer edited
in
Quantitative Aptitude
Mar 2
gateme-2022-set1
quantitative-aptitude
clock-time
1
answer
GATE Mechanical 2022 Set 2 | GA Question: 9
Four cities $\text{P, Q, R}$ and $\text{S}$ are connected through one-way routes as shown in the figure. The travel time between any two connected cities is one hour. The boxes beside each city name describe the starting time of first train of the ... required? $6$ hours $30$ minutes $3$ hours $45$ minutes $4$ hours $30$ minutes $5$ hours $15$ minutes
recategorized
in
Analytical Aptitude
Mar 2
gateme-2022-set2
analytical-aptitude
logical-reasoning
1
answer
GATE Mechanical 2022 Set 2 | GA Question: 10
Equal sized circular regions are shaded in a square sheet of paper of $1$ cm side length. Two cases, case $\text{M}$ and case $\text{N}$, are considered as shown in the figures below. In the case $\text{M}$ ... of case $\text{M}$ to that of case $\text{N}$? $2 : 3$ $1 : 1$ $3 : 2$ $2 : 1$
answered
in
Quantitative Aptitude
Mar 1
gateme-2022-set2
quantitative-aptitude
geometry
circle
squares
area
1
answer
GATE Mechanical 2022 Set 2 | GA Question: 4
A person was born on the fifth Monday of February in a particular year. Which one of the following statements is correct based on the above information? The $2^{\text{nd}}$ February of that year is a Tuesday There will be five Sundays in the ... year The $1^{\text{st}}$ February of that year is a Sunday All Mondays of February in that year have even dates
answer edited
in
Quantitative Aptitude
Mar 1
gateme-2022-set2
quantitative-aptitude
calendar
1
answer
GATE Mechanical 2022 Set 2 | GA Question: 5
Which one of the groups given below can be assembled to get the shape that is shown above using each piece only once without overlapping with each other? (rotation and translation operations may be used).
answered
in
Spatial Aptitude
Mar 1
gateme-2022-set2
spatial-aptitude
assembling-pieces
1
answer
GATE Mechanical 2022 Set 2 | GA Question: 8
Consider the following for non-zero positive integers, $p$ and $q$. $f\left ( p, q \right ) = \frac{p\times p\times p\times \cdots\: \cdots\: \cdots \times p \:= \:p^{q}}{q\:{terms}}; f\left ( p, 1 \right )=p$ ... $g\left ( 2,1 \right ) \neq f\left ( 2,1 \right )$ $f\left ( 3,2 \right )> g\left ( 3,2 \right )$
answer edited
in
Quantitative Aptitude
Feb 22
gateme-2022-set2
quantitative-aptitude
functions
1
answer
GATE Mechanical 2022 Set 2 | GA Question: 7
For the past $m$ days, the average daily production at a company was $100$ units per day. If today’s production of $180$ units changes the average to $110$ units per day, What is the value of $m$? $18$ $10$ $7$ $5$
answered
in
Quantitative Aptitude
Feb 22
gateme-2022-set2
quantitative-aptitude
average
1
answer
GATE Mechanical 2022 Set 2 | GA Question: 3
If $f\left ( x \right ) = 2 \:\ln \left ( \sqrt{e^{x}} \right )$, what is the area bounded by $f\left ( x \right )$ for the interval $\left [ 0,2 \right ]$ on the $x$ – axis? $\frac{1}{2}$ $1$ $2$ $4$
answered
in
Quantitative Aptitude
Feb 22
gateme-2022-set2
quantitative-aptitude
functions
area
1
answer
GATE Mechanical 2022 Set 2 | GA Question: 1
Writing too many things on the ___________ while teaching could make the students get _____________. bored / board board / bored board / board bored / bored
answered
in
Verbal Aptitude
Feb 22
gateme-2022-set2
verbal-aptitude
most-appropriate-word
1
answer
GATE Mechanical 2022 Set 1 | GA Question: 9
Given below are three conclusions drawn based on the following three statements. Statement $1$ : All teachers are professors. Statement $2$ : No professor is a male. Statement $3$ : Some males are engineers. Conclusion $\text{I}$: No ... $\text{III}$ are correct Only conclusion $\text{I}$ and conclusion $\text{III}$ are correct
answered
in
Analytical Aptitude
Feb 22
gateme-2022-set1
analytical-aptitude
statements-follow
1
answer
GATE Mechanical 2022 Set 1 | GA Question: 8
An equilateral triangle, a square and a circle have equal areas. What is the ratio of the perimeters of the equilateral triangle to square to circle? $3\sqrt{3} : 2 : \sqrt{\pi}$ $\sqrt{\left ( 3 \sqrt{3} \right )} : 2 : \sqrt{\pi}$ $\sqrt{\left ( 3 \sqrt{3} \right )} : 4 : 2\sqrt{\pi}$ $\sqrt{\left ( 3 \sqrt{3} \right )} : 2 : 2\sqrt{\pi}$
answered
in
Quantitative Aptitude
Feb 22
gateme-2022-set1
quantitative-aptitude
geometry
triangles
1
answer
GATE Mechanical 2022 Set 1 | GA Question: 7
A rhombus is formed by joining the midpoints of the sides of a unit square. What is the diameter of the largest circle that can be inscribed within the rhombus? $\dfrac{1}{\sqrt{2}}$ $\dfrac{1}{2\sqrt{2}}$ $\sqrt{2}$ $2 \sqrt{2}$
answer edited
in
Quantitative Aptitude
Feb 22
gateme-2022-set1
quantitative-aptitude
geometry
1
answer
GATE Mechanical 2022 Set 1 | GA Question: 4
Four girls $\text{P, Q, R and S}$ are studying languages in a University. $P$ is learning French and Dutch. $Q$ is learning Chinese and Japanese. $R$ is learning Spanish and French. $S$ is learning Dutch and Japanese. Given that: French ... French. Based on the above information, which girl is learning the most difficult pair of languages? $P$ $Q$ $R$ $S$
answered
in
Analytical Aptitude
Feb 22
gateme-2022-set1
analytical-aptitude
logical-reasoning
1
answer
GATE Mechanical 2022 Set 1 | GA Question: 3
A person travelled $80$ $\text{km}$ in $6$ hours. If the person travelled the first part with a uniform speed of $10$ $\text{kmph}$ and the remaining part with a uniform speed of $18$ $\text{kmph}$. What percentage of the total distance is travelled at a uniform speed of $10$ $\text{kmph}$? $28.25$ $37.25$ $43.75$ $50.00$
answer edited
in
Quantitative Aptitude
Feb 22
gateme-2022-set1
quantitative-aptitude
speed-time-distance
1
answer
GATE Mechanical 2022 Set 1 | GA Question: 1
After playing __________ hours of tennis, I am feeling __________________ tired to walk back. too/too too/two two/ two two/too
answered
in
Verbal Aptitude
Feb 22
gateme-2022-set1
verbal-aptitude
most-appropriate-word
1
answer
GATE Mechanical 2022 Set 1 | GA Question: 2
The average of the monthly salaries of $\text{M, N}$ and $S$ is ₹$4000$. The average of the monthly salaries of $\text{N, S}$ and $P$ is ₹$5000$. The monthly salary of $P$ is ₹$6000$. What is the monthly salary of $M$ as a percentage of the monthly salary of $P$? $50\%$ $75\%$ $100\%$ $125\%$
answered
in
Quantitative Aptitude
Feb 19
gateme-2022-set1
quantitative-aptitude
average
percentage
1
answer
GATE Mechanical 2022 Set 2 | GA Question: 2
Which one of the following is a representation (not to scale and in bold) of all values of $x$ satisfying the inequality $2 - 5x \leq - \dfrac{6x - 5}{3}$ on the real number line? A. B. C. D.
answered
in
Quantitative Aptitude
Feb 19
gateme-2022-set2
quantitative-aptitude
inequality
Welcome to GO Mechanical, where you can ask questions and receive answers from other members of the community.
Recent Posts
GATE Mechanical Engineering Syllabus for GATE 2022 (Updated 2020)
ISRO Questions Papers for Mechanical
ISRO Mechanical and RAC Previous Year Papers
How to Apply to Colleges after GATE
GATE Mechanical Syllabus
Top Users
Oct 2022