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Questions by Arjun
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answers
0
votes
GATE2015-3-24
Let $\phi$ be an arbitrary smooth real valued scalar function and $\overrightarrow{V}$ be an arbitrary smooth vector valued function in a three-dimensional space. Which one of the following is an identity? Curl$(\phi \overrightarrow{V})$ = $\bigtriangledown$($\phi$ ... $\overrightarrow{V}=0$ Div($(\phi \overrightarrow{V})$ ) = $\phi$ Div$\overrightarrow{V}$
Let $\phi$ be an arbitrary smooth real valued scalar function and $\overrightarrow{V}$ be an arbitrary smooth vector valued function in a three-dimensional space. Which o...
asked
Feb 24, 2017
Calculus
gateme-2015-set3
vector-identities
calculus
engineering-mathematics
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–
0
answers
0
votes
GATE2015-3-25
An air-standard Diesel cycle consists of the following processes: $1 - 2$: Air is compressed isentropically. $2 - 3$: Heat is added at constant pressure. $3 - 4$: Air expands isentropically to the original volume. $4 - 1$: Heat is rejected at constant volume. If $\gamma$ ... $1-\displaystyle{\frac{T_4-T_1}{(\gamma -1)(T_3-T_2)}}$
An air-standard Diesel cycle consists of the following processes:$1 – 2$: Air is compressed isentropically.$2 – 3$: Heat is added at constant pressure.$3 – 4$: Air ...
asked
Feb 24, 2017
Applications
gateme-2015-set3
fluid-mechanics-and-thermal-science
applications
diesel-cycle
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–
0
answers
0
votes
GATE2015-3-26
The value of moment of inertia of the section shown in the figure about the axis-XX is $8.5050×10^6$ $mm^4$ $6.8850×10^6$ $mm^4$ $7.7625×10^6$ $mm^4$ $8.5725×10^6$ $mm^4$
The value of moment of inertia of the section shown in the figure about the axis-XX is$8.5050×10^6$ $mm^4$$6.8850×10^6$ $mm^4$$7.7625×10^6$ $mm^4$$8.5725×10^6$ $mm^4$...
asked
Feb 24, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2015-set3
materials-manufacturing-and-industrial-engineering
metrology-and-inspection
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–
0
answers
0
votes
GATE2015-3-27
Figure shows a wheel rotating about $O_2$. Two points $A$ and $B$ located along the radius of wheel have speeds of $80$ $m/s$ and $140$ $m/s$ respectively. The distance between the points $A$ and $B$ is $300$ $mm$. The diameter of the wheel (in $mm$) is ________
Figure shows a wheel rotating about $O_2$. Two points $A$ and $B$ located along the radius of wheel have speeds of $80$ $m/s$ and $140$ $m/s$ respectively. The distance b...
asked
Feb 24, 2017
Applied Mechanics and Design
gateme-2015-set3
numerical-answers
applied-mechanics-and-design
theory-of-machines
+
–
0
answers
0
votes
GATE2015-3-28
Figure shows a single degree of freedom system. The system consists of a massless rigid bar $OP$ hinged at $O$ and a mass $m$ at end $P$. The natural frequency of vibration of the system is $f_n=\displaystyle{\frac{1}{2\pi }\sqrt{\frac{k}{4m}}} \\$ ... $f_n=\displaystyle{\frac{1}{2\pi }\sqrt{\frac{2k}{m}}}$
Figure shows a single degree of freedom system. The system consists of a massless rigid bar $OP$ hinged at $O$ and a mass $m$ at end $P$. The natural frequency of vibrati...
asked
Feb 24, 2017
Vibrations
gateme-2015-set3
vibrations
applied-mechanics-and-design
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–
0
answers
0
votes
GATE2015-3-4
In the figure, link $2$ rotates with constant angular velocity $\omega_2$. A slider link $3$ moves outwards with a constant relative velocity $V_{Q/P}$, where $Q$ is a point on slider $3$ and $P$ is a point on link $2$. The magnitude and direction of Coriolis ... $\omega_2$ $\omega_2$ $V_{Q/P}$; direction of $V_{Q/P}$ rotated by $90^\circ$ opposite to the direction of $\omega_2$
In the figure, link $2$ rotates with constant angular velocity $\omega_2$. A slider link $3$ moves outwards with a constant relative velocity $V_{Q/P}$, where $Q$ is a po...
asked
Feb 24, 2017
Applied Mechanics and Design
gateme-2015-set3
velocity-and-acceleration-analysis
theory-of-mechanics
applied-mechanics-and-design
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–
0
answers
0
votes
GATE2015-3-5
The strain hardening exponent $n$ of stainless steel SS $304$ with distinct yield and UTS values undergoing plastic deformation is $n < 0$ $n = 0$ $0 < n < 1$ $n = 1$
The strain hardening exponent $n$ of stainless steel SS $304$ with distinct yield and UTS values undergoing plastic deformation is$n < 0$$n = 0$$0 < n < 1$$n = 1$
asked
Feb 24, 2017
Mechanics of Materials
gateme-2015-set3
mechanics-of-materials
applied-mechanics-and-design
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–
0
answers
0
votes
GATE2015-3-6
In a machining operation, if the generatrix and directrix both are straight lines, the surface obtained is cylindrical helical helical surface of revolution
In a machining operation, if the generatrix and directrix both are straight lines, the surface obtained iscylindricalhelicalhelicalsurface of revolution
asked
Feb 24, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2015-set3
materials-manufacturing-and-industrial-engineering
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–
0
answers
0
votes
GATE2015-3-7
In full mould (cavity-less) casting process, the pattern is made of expanded polystyrene wax epoxy plaster of Paris
In full mould (cavity-less) casting process, the pattern is made ofexpanded polystyrenewaxepoxyplaster of Paris
asked
Feb 24, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2015-set3
materials-manufacturing-and-industrial-engineering
casting-forming-and-joining-process
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–
0
answers
0
votes
GATE2015-3-8
In the notation $(a/b/c) : (d/e/f)$ for summarizing the characteristics of queuing situation, the letters $‘b’$ and $‘d’$ stand respectively for service time distribution and queue discipline number of servers and size of calling source number of servers and queue discipline service time distribution and maximum number allowed in system
In the notation $(a/b/c) : (d/e/f)$ for summarizing the characteristics of queuing situation, the letters $‘b’$ and $‘d’$ stand respectively forservice time distr...
asked
Feb 24, 2017
Operations Research
gateme-2015-set3
simple-queuing-models
operations-research
materials-manufacturing-and-industrial-engineering
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–
0
answers
0
votes
GATE2015-3-9
Couette flow is characterized by steady, incompressible, laminar flow through a straight circular pipe fully developed turbulent flow through a straight circular pipe steady, incompressible, laminar flow between two fixed parallel plates steady, incompressible, laminar flow between one fixed plate and the other moving with a constant velocity
Couette flow is characterized bysteady, incompressible, laminar flow through a straight circular pipefully developed turbulent flow through a straight circular pipesteady...
asked
Feb 24, 2017
Fluid Mechanics
gateme-2015-set3
fluid-mechanics-and-thermal-science
fluid-mechanics
+
–
1
answers
0
votes
GATE2015-3-10
The thermodynamic cycle shown in figure ($T$-$s$ diagram) indicates reversed Carnot cycle reversed Brayton cycle vapor compression cycle vapor absorption cycle
The thermodynamic cycle shown in figure ($T$-$s$ diagram) indicatesreversed Carnot cyclereversed Brayton cyclevapor compression cyclevapor absorption cycle
asked
Feb 24, 2017
Thermodynamics
gateme-2015-set3
fluid-mechanics-and-thermal-science
thermodynamics
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–
0
answers
0
votes
GATE2015-3-11
The ratio of momentum diffusivity $(ν)$ to thermal diffusivity $(\alpha)$, is called Prandtl number Nusselt number Biot number Lewis number
The ratio of momentum diffusivity $(ν)$ to thermal diffusivity $(\alpha)$, is calledPrandtl numberNusselt numberBiot numberLewis number
asked
Feb 24, 2017
Heat Transfer
gateme-2015-set3
fluid-mechanics-and-thermal-science
heat-transfer
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–
0
answers
0
votes
GATE2015-3-12
Saturated vapor is condensed to saturated liquid in a condenser. The heat capacity ratio is $C_r = \displaystyle{\frac{C_{\text{min}}}{C_{\text{max}}}}$. The effectiveness $(\varepsilon)$ of the condenser is $\displaystyle{\frac{1-\text{exp}[-NTU(1+C_r)]}{1+C_r}} \\$ ... $\displaystyle{\frac{NTU}{1+NTU}} \\$ $1 - \text{exp}(-NTU)$
Saturated vapor is condensed to saturated liquid in a condenser. The heat capacity ratio is $C_r = \displaystyle{\frac{C_{\text{min}}}{C_{\text{max}}}}$. The effectivenes...
asked
Feb 24, 2017
Heat Transfer
gateme-2015-set3
heat-transfer
fluid-mechanics-and-thermal-science
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–
0
answers
0
votes
GATE2015-3-13
Using a unit step size, the value of integral $\int_{1}^{2}x \ln x dx$ by trapezoidal rule is ________
Using a unit step size, the value of integral $\int_{1}^{2}x \ln x dx$ by trapezoidal rule is ________
asked
Feb 24, 2017
Numerical Methods
gateme-2015-set3
numerical-answers
numerical-methods
integration-by-trapezoidal-and-simpsons-rule
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–
0
answers
0
votes
GATE2015-3-14
If $P(X) = \displaystyle{\frac{1}{4}}$, $P(Y) = \displaystyle{\frac{1}{3}}$, and $P(X \cap Y) = \displaystyle{\frac{1}{12}}$, the value of $P(Y/X)$ is $\displaystyle{\frac{1}{4}} \\$ $\displaystyle{\frac{4}{25}} \\$ $\displaystyle{\frac{1}{3}} \\$ $\displaystyle{\frac{29}{50}}$
If $P(X) = \displaystyle{\frac{1}{4}}$, $P(Y) = \displaystyle{\frac{1}{3}}$, and $P(X \cap Y) = \displaystyle{\frac{1}{12}}$, the value of $P(Y/X)$ is$\displaystyle{\frac...
asked
Feb 24, 2017
Probability and Statistics
gateme-2015-set3
probability-and-statistics
probability
conditional-probability
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–
0
answers
0
votes
GATE2015-3-15
The lowest eigenvalue of the $2\times 2$ matrix $\begin{bmatrix} 4 & 2\\ 1 & 3 \end{bmatrix}$ is ________
The lowest eigenvalue of the $2\times 2$ matrix $\begin{bmatrix} 4 & 2\\ 1 & 3 \end{bmatrix}$ is ________
asked
Feb 24, 2017
Linear Algebra
gateme-2015-set3
numerical-answers
linear-algebra
matrices
eigenvalues
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–
0
answers
0
votes
GATE2015-3-1
For the given fluctuating fatigue load, the values of stress amplitude and stress ratio are respectively $100$ $MPa$ and $5$ $250$ $MPa$ and $5$ $100$ $MPa$ and $0.20$ $250$ $MPa$ and $0.20$
For the given fluctuating fatigue load, the values of stress amplitude and stress ratio are respectively$100$ $MPa$ and $5$$250$ $MPa$ and $5$$100$ $MPa$ and $0.20$$250$ ...
asked
Feb 24, 2017
Applied Mechanics and Design
gateme-2015-set3
applied-mechanics-and-design
mechanics-of-materials
stress-strain
+
–
0
answers
0
votes
GATE2015-3-2
For the same material and the mass, which of the following configurations of flywheel will have maximum mass moment of inertia about the axis of rotation OO’ passing through the center of gravity.
For the same material and the mass, which of the following configurations of flywheel will have maximum mass moment of inertia about the axis of rotation OO’ passing th...
asked
Feb 24, 2017
Applied Mechanics and Design
gateme-2015-set3
applied-mechanics-and-design
theory-of-machines
flywheels-and-governors
+
–
0
answers
0
votes
GATE2015-3-3
A gear train is made up of five spur gears as shown in the figure. Gear $2$ is driver and gear $6$ is driven member. $N_2$, $N_3$, $N_4$, $N_5$ and $N_6$ represent number of teeth on gears $2$, $3$, $4$, $5$, and $6$ respectively. The gear(s) which act(s) as idler(s) is/are Only $3$ Only $4$ Only $5$ Both $3$ and $5$
A gear train is made up of five spur gears as shown in the figure. Gear $2$ is driver and gear $6$ is driven member. $N_2$, $N_3$, $N_4$, $N_5$ and $N_6$ represent number...
asked
Feb 24, 2017
Applied Mechanics and Design
gateme-2015-set3
applied-mechanics-and-design
theory-of-machines
gears-and-gear-trains
+
–
1
answers
0
votes
GATE Mechanical 2015 Set 2 | GA Question: 1
Choose the most appropriate word from the options given below to complete the following sentence. If the athlete had wanted to come first in the race, he _________ several hours every day. should practice should have practiced practised should be practicing
Choose the most appropriate word from the options given below to complete the following sentence.If the athlete had wanted to come first in the race, he _________ several...
asked
Feb 24, 2017
Verbal Aptitude
gateme-2015-set2
verbal-aptitude
most-appropriate-word
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–
1
answers
0
votes
GATE Mechanical 2015 Set 2 | GA Question: 2
Choose the most suitable one word substitute for the following expression: Connotation of a road or way Pertinacious Viaticum Clandestine Ravenous
Choose the most suitable one word substitute for the following expression:Connotation of a road or wayPertinaciousViaticumClandestineRavenous
asked
Feb 24, 2017
Verbal Aptitude
gateme-2015-set2
verbal-aptitude
most-appropriate-word
+
–
1
answers
0
votes
GATE Mechanical 2015 Set 2 | GA Question: 3
Choose the correct verb to fill in the blank below: Let us _____ introvert alternate atheist altruist
Choose the correct verb to fill in the blank below:Let us _____introvertalternateatheistaltruist
asked
Feb 24, 2017
Verbal Aptitude
gateme-2015-set2
verbal-aptitude
english-grammar
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–
0
answers
0
votes
GATE Mechanical 2015 Set 2 | GA Question: 4
Find the missing sequence in letter series below: A, CD, DHI, ?, UVWXY LMN MNO MNOP NOPQ
Find the missing sequence in letter series below:A, CD, DHI, ?, UVWXYLMNMNOMNOPNOPQ
asked
Feb 24, 2017
Analytical Aptitude
gateme-2015-set2
analytical-aptitude
logical-reasoning
sequence-series
+
–
0
answers
0
votes
GATE Mechanical 2015 Set 2 | GA Question: 5
If $x>y>1$ Which of the following must be true? $\ln x>\ln y$ $e^x>e^y$ $y^x>x^y$ $\cos x>\cos y$ (i) and (ii) (i) and (iii) (iii) and (iv) (ii) and (iv)
If $x>y>1$ Which of the following must be true?$\ln x>\ln y$$e^x>e^y$$y^x>x^y$$\cos x>\cos y$(i) and (ii)(i) and (iii)(iii) and (iv)(ii) and (iv)
asked
Feb 24, 2017
Quantitative Aptitude
gateme-2015-set2
numerical-ability
inequality
+
–
0
answers
0
votes
GATE Mechanical 2015 Set 2 | GA Question: 6
Ram and Shyam shared a secret and promised to each other that it would remain between them. Ram expressed himself in one of the following ways a given in the choices below. Identify the correct way as per standard English. It would remain between you and me. It would remain between I and you. It would remain between you and I. It would remain between me.
Ram and Shyam shared a secret and promised to each other that it would remain between them. Ram expressed himself in one of the following ways a given in the choices belo...
asked
Feb 24, 2017
Verbal Aptitude
gateme-2015-set2
verbal-aptitude
verbal-reasoning
english-grammar
+
–
0
answers
0
votes
GATE Mechanical 2015 Set 2 | GA Question: 7
In the following question,the first and last sentence of the passage are in order and numbered $1$ and $6$. The rest of passage is split in $4$ parts and numbered as $2, 3, 4$ and $5$. These four parts are not arranged in proper order. Read the sentences and ... Houses looks so pretty with lighted lamps all around $2,5,3,4$ $5,2,4,3$ $3,5,4,2$ $4,5,2,3$
In the following question,the first and last sentence of the passage are in order and numbered $1$ and $6$. The rest of passage is split in $4$ parts and numbered as $2, ...
asked
Feb 24, 2017
Verbal Aptitude
gateme-2015-set2
verbal-aptitude
verbal-reasoning
passage-reading
+
–
0
answers
0
votes
GATE Mechanical 2015 Set 2 | GA Question: 8
From a circular sheet of paper of radius $30$ $cm$, a sector of $10\%$ area is removed. If the remaining part is used to make a conical surface, then the ratio of radius and height of cone is_____
From a circular sheet of paper of radius $30$ $cm$, a sector of $10\%$ area is removed. If the remaining part is used to make a conical surface, then the ratio of radius ...
asked
Feb 24, 2017
Quantitative Aptitude
gateme-2015-set2
numerical-answers
numerical-ability
geometry
+
–
0
answers
0
votes
GATE Mechanical 2015 Set 2 | GA Question: 9
$\log \tan 1^{\circ} + \log \tan 2^{\circ} + \dots + \log \tan 89^{\circ}$ is $1$ $1/\sqrt{2}$ $0$ $-1$
$\log \tan 1^{\circ} + \log \tan 2^{\circ} + \dots + \log \tan 89^{\circ}$ is$1$$1/\sqrt{2}$$0$$-1$
asked
Feb 24, 2017
Quantitative Aptitude
gateme-2015-set2
numerical-ability
logarithms
+
–
0
answers
0
votes
GATE Mechanical 2015 Set 2 | GA Question: 10
Ms.X will be in Bagdogra from $01/05/2014$ to $20/05/2014$ and from $22/05/2014$ to $31/05/2014$.On the morning of $21/5/2104$, she will reach Kochi via Mumbai. Which of the statement below is logically valid and can be inferred from the above ... in May. Ms.X will be only in Kochi for one day,only in May. Only Ms.X will be in Kochi for one day in May.
Ms.X will be in Bagdogra from $01/05/2014$ to $20/05/2014$ and from $22/05/2014$ to $31/05/2014$.On the morning of $21/5/2104$, she will reach Kochi via Mumbai.Which of t...
asked
Feb 24, 2017
Analytical Aptitude
gateme-2015-set2
analytical-aptitude
logical-reasoning
+
–
0
answers
0
votes
GATE2015-2-51
During a TIG welding process, the arc current and arc voltage were $50$ $A$ and $60$ $V$, respectively, when the welding speed was $150$ $mm/min$. In another process, the TIG welding is carried out at a welding speed of $120$ $mm/min$ at the same arc voltage and ... so that weld quality remains the same. The welding current (in $A$) for this process is $40.00$ $44.72$ $55.90$ $62.25$
During a TIG welding process, the arc current and arc voltage were $50$ $A$ and $60$ $V$, respectively, when the welding speed was $150$ $mm/min$. In another process, the...
asked
Feb 24, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2015-set2
principles-of-welding
casting-forming-and-joining-process
materials-manufacturing-and-industrial-engineering
+
–
0
answers
0
votes
GATE2015-2-52
A single point cutting tool with $0^\circ $ rake angle is used in an orthogonal machining process. At a cutting speed of $180$ $m/min$, the thrust force is $490$ $N$. If the coefficient of friction between the tool and the chip is $0.7$, then the power consumption (in $kW$) for the machining operation is ________
A single point cutting tool with $0^\circ $ rake angle is used in an orthogonal machining process. At a cutting speed of $180$ $m/min$, the thrust force is $490$ $N$. If ...
asked
Feb 24, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2015-set2
numerical-answers
machining-and-machine-tool-operations
materials-manufacturing-and-industrial-engineering
+
–
0
answers
0
votes
GATE2015-2-53
A resistance-capacitance relaxation circuit is used in an electrical discharge machining process. The discharge voltage is $100$ $V$. At a spark cycle time of $25$ $μs$, the average power input required is $1$ $kW$. The capacitance (in $μF$) in the circuit is $2.5$ $5.0$ $7.5$ $10.0$
A resistance-capacitance relaxation circuit is used in an electrical discharge machining process. The discharge voltage is $100$ $V$. At a spark cycle time of $25$ $μs$,...
asked
Feb 24, 2017
Applications
gateme-2015-set2
applications
fluid-mechanics-and-thermal-science
+
–
0
answers
0
votes
GATE2015-2-54
A project consists of $7$ activities. The network along with the time durations (in days) for various activities is shown in the figure. The minimum time (in days) for completion of the project is_________
A project consists of $7$ activities. The network along with the time durations (in days) for various activities is shown in the figure.The minimum time (in days) for com...
asked
Feb 24, 2017
Heat Transfer
gateme-2015-set2
numerical-answers
radiation-network-analysis
heat-transfer
fluid-mechanics-and-thermal-science
+
–
0
answers
0
votes
GATE2015-2-55
A manufacturer has the following data regarding a product: Fixed cost per month = $Rs$. $50000$ Variable cost per unit = $Rs.$ $200$ Selling price per unit = $Rs$. $300$ Production capacity = $1500$ units per month If the production is carried out at $80\%$ of the rated capacity, then the monthly profit (in $Rs$.) is ____________
A manufacturer has the following data regarding a product:Fixed cost per month = $Rs$. $50000$Variable cost per unit = $Rs.$ $200$Selling price per unit = $Rs$. $300$Prod...
asked
Feb 24, 2017
Materials, Manufacturing and Industrial Engineering
gateme-2015-set2
numerical-answers
economics-of-mechining
machining-and-machine-tool-operations
materials-manufacturing-and-industrial-engineering
+
–
0
answers
0
votes
GATE2015-2-38
A hollow shaft ($d_o$ = $2d_i$ where $d_o$ and $d_i$ are the outer and inner diameters respectively) needs to transmit $20$ $kW$ power at $3000$ $RPM$. If the maximum permissible shear stress is $30$ $MPa$, do is $11.29$ $mm$ $22.58$ $mm$ $33.87$ $mm$ $45.16$ $mm$
A hollow shaft ($d_o$ = $2d_i$ where $d_o$ and $d_i$ are the outer and inner diameters respectively) needs to transmit $20$ $kW$ power at $3000$ $RPM$. If the maximum per...
asked
Feb 24, 2017
Mechanics of Materials
gateme-2015-set2
mechanics-of-materials
applied-mechanics-and-design
+
–
0
answers
0
votes
GATE2015-2-39
The total emissive power of a surface is $500 \: W/ m^2$ at a temperature $T_1$ and $1200 \: W/m^2$ at a temperature $T_2$, where the temperatures are in Kelvin. Assuming the emissivity of the surface to be constant, the ratio of the temperatures $\dfrac{T_1}{T_2}$ is $0.308$ $0.416$ $0.803$ $0.874$
The total emissive power of a surface is $500 \: W/ m^2$ at a temperature $T_1$ and $1200 \: W/m^2$ at a temperature $T_2$, where the temperatures are in Kelvin. Assuming...
asked
Feb 24, 2017
Applications
gateme-2015-set2
power-engineering
applications
fluid-mechanics-and-thermal-science
+
–
0
answers
0
votes
GATE2015-2-40
The head loss for a laminar incompressible flow through a horizontal circular pipe is $h_1$. Pipe length and fluid remaining the same, if the average flow velocity doubles and the pipe diameter reduces to half its previous value, the head loss is $h_2$. The ratio $h_2$/$h_1$ is $1$ $4$ $8$ $16$
The head loss for a laminar incompressible flow through a horizontal circular pipe is $h_1$. Pipe length and fluid remaining the same, if the average flow velocity double...
asked
Feb 24, 2017
Fluid Mechanics
gateme-2015-set2
flow-through-pipes
fluid-mechanics
fluid-mechanics-and-thermal-science
+
–
0
answers
0
votes
GATE2015-2-41
For a fully developed laminar flow of water (dynamic viscosity $0.001$ $P_{a-s}$) through a pipe of radius $5$ $cm$, the axial pressure gradient is −$10$ $Pa/m$. The magnitude of axial velocity (in $m/s$) at a radial location of $0.2$ $cm$ is _______
For a fully developed laminar flow of water (dynamic viscosity $0.001$ $P_{a-s}$) through a pipe of radius $5$ $cm$, the axial pressure gradient is −$10$ $Pa/m$. The ma...
asked
Feb 24, 2017
Fluid Mechanics
gateme-2015-set2
numerical-answers
fluid-mechanics
fluid-mechanics-and-thermal-science
+
–
0
answers
0
votes
GATE2015-2-42
A balanced counterflow heat exchanger has a surface area of $20$ $m^2$ and overall heat transfer coefficient of $20$ $W$/$m^2$-$K$. Air ($C_p$=$1000$ $J$/$kg$-$K$) entering at $0.4$ $kg/s$ and $280$ $K$ is to be preheated by the air leaving the system at $0.4$ $kg/s$ and $300$ $K$. The outlet temperature (in $K$) of the preheated air is $290$ $300$ $320$ $350$
A balanced counterflow heat exchanger has a surface area of $20$ $m^2$ and overall heat transfer coefficient of $20$ $W$/$m^2$-$K$. Air ($C_p$=$1000$ $J$/$kg$-$K$) enteri...
asked
Feb 24, 2017
Heat Transfer
gateme-2015-set2
heat-exchanger-performance
heat-transfer
fluid-mechanics-and-thermal-science
+
–
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