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Recent activity in Fluid Mechanics and Thermal Sciences
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transfer function for second order system
A second order real system has the following properties.The damping ratio is 0.5 and undamped natural frequency is 10rad/sec, the steady state value at zero is 1.02.the transfer function for the system is?
A second order real system has the following properties.The damping ratio is 0.5 and undamped natural frequency is 10rad/sec, the steady state value at zero is 1.02.the t...
refri_12
140
points
refri_12
asked
Feb 16
0
answers
0
votes
mole fraction and mass fraction
a mixture of carbon dioxide and water vapour is at 100kPa, 200C temperature. As the mixture is cooled at a constant pressure, water vapour begins to condense when the temperature reaches 70C , determine mole fraction and mass fraction of carbon dioxide ... -820kJ/kmol 277.778K h2 280K -528kJ/kmol the molar specific enthalpy of nitrogen at 277.778K is -592.88kJ/kmol
a mixture of carbon dioxide and water vapour is at 100kPa, 200C temperature. As the mixture is cooled at a constant pressure, water vapour begins to condense when the tem...
refri_12
140
points
refri_12
asked
Feb 16
0
answers
0
votes
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 $v=0.86 \ast 10^{-6} \:\text{m}^2\text{/s})$ $0.43\;\text{m}$ $1\;\text{m}$ $43\;\text{m}$ $103\;\text{m}$
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 wit...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Fluid Mechanics
isro2009
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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 $0.75$ $0.66$ $0.90$ $0.83$
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 velocit...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Power Engineering
isro2009
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answers
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votes
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 $\sigma=5.67 \times 10^{-6} \;W/m^2K^4)$ $1020$ $464$ $812$ $567$
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 $300 \: \text{K}$ ...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Heat Transfer
isro2009
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votes
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? $0 \;\text{Pa}$ $1400 \;\text{Pa}$ $700 \;\text{Pa}$ $350 \;\text{Pa}$
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?$...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Fluid Mechanics
isro2009
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0
answers
0
votes
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 $4.6 \;\text{cm}$ $5.4 \;\text{cm}$ $5.0 \;\text{cm}$ $5.8 \;\text{cm}$
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 expos...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Fluid Mechanics
isro2009
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answers
0
votes
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
A necessary precaution in selection of pumps for parallel operations is that$\text{H-Q}$ characteristics of both should be identicalBoth pumps should be centrifugal typeB...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Power Engineering
isro2009
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answers
0
votes
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
Across a normal shockStatic pressure and the static temperature riseentropy remains constantvelocity and static pressure decreasedensity and temperature decrease
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Fluid Mechanics
isro2009
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answers
0
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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
The relation ${p^{V}}^{\gamma}=$ constant, where $\gamma$ is the ratio of the specific heats of ideal gas, is applicable toAny adiabatic processOnly reversible adiabatic ...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Heat Transfer
isro2009
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0
answers
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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
The correct sequence of the centrifugal pump components through which the fluid flows isImpeller, Suction pipe, Foot valve and strainer, Delivery pipeFoot valve and strai...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Power Engineering
isro2009
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answers
0
votes
ISRO2009-2
If the stream function is given by $\Psi=3xy$, then the velocity at a point $(2,3)$ will be $7.21 \: \text{unit}$ $18 \: \text{unit}$ $10.82 \: \text{unit}$ $54 \: \text{unit}$
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...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Fluid Mechanics
isro2009
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0
answers
0
votes
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}$
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 p...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
edited
Jun 26, 2022
Fluid Mechanics
isro2009
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1
answers
1
votes
GATE2019 ME-1: 49
A steam power cycle with regeneration as shown below on the $T-s$ diagram employs a single open feedwater heater for efficiency improvement. The fluid mix with each other in an open feedwater heater. The turbine is isentropic and the input (bleed) to the feedwater ... from the turbine as a percentage of the total mass flow rate at the inlet to the turbine at state $1$ is _______
A steam power cycle with regeneration as shown below on the $T-s$ diagram employs a single open feedwater heater for efficiency improvement. The fluid mix with each other...
GG
540
points
GG
answered
Apr 21, 2021
Applications
gateme-2019-set1
numerical-answers
fluid-mechanics-and-thermal-science
applications
vapour-and-gas-power-cycles
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1
answers
0
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GATE Mechanical 2014 Set 2 | Question: 46
In an ideal Brayton cycle, atmospheric air (ratio of specific heats, $c_p$/$c_v$ = $1.4$, specific heat at constant pressure = $1.005$ $kJ/kg.K$) at $1$ $bar$ and $300$ $K$ is compressed to $8$ $bar$. The maximum temperature in the cycle ... the heat is supplied at the rate of $80$ $MW$, the mass flow rate (in $kg/s$) of air required in the cycle is _______
In an ideal Brayton cycle, atmospheric air (ratio of specific heats, $c_p$/$c_v$ = $1.4$, specific heat at constant pressure = $1.005$ $kJ/kg.K$) at $1$ $bar$ and $300$ $...
GG
540
points
GG
answered
Apr 20, 2021
Thermodynamics
gateme-2014-set2
numerical-answers
fluid-mechanics-and-thermal-science
thermodynamics
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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
GG
540
points
GG
answered
Apr 20, 2021
Thermodynamics
gateme-2015-set3
fluid-mechanics-and-thermal-science
thermodynamics
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–
1
answers
0
votes
GATE2016-1-16
Which of the following statements are TRUE with respect to heat and work? They are boundary phenomena They are exact differentials They are path functions both $(i)$ and $(ii)$ both $(i)$ and $(iii)$ both $(ii)$ and $(iii)$ only $(iii)$
Which of the following statements are TRUE with respect to heat and work?They are boundary phenomenaThey are exact differentialsThey are path functionsboth $(i)$ and $(ii...
GG
540
points
GG
answered
Apr 20, 2021
Thermodynamics
gateme-2016-set1
calculation-of-work-and-heat-in-various-processes
thermodynamics
fluid-mechanics-and-thermal-science
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1
answers
0
votes
GATE2016-2-17
The internal energy of an ideal gas is a function of temperature and pressure volume and pressure entropy and pressure temperature only
The internal energy of an ideal gas is a function oftemperature and pressurevolume and pressureentropy and pressuretemperature only
GG
540
points
GG
answered
Apr 20, 2021
Thermodynamics
gateme-2016-set2
fluid-mechanics-and-thermal-science
thermodynamics
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1
answers
0
votes
GATE2020-ME-1: 18
For an ideal gas, a constant pressure line and a constant volume line intersect at a point, in the Temperature $(T)$ versus specific entropy $\text{(s)}$ diagram. $C_{P}$ is the specific heat at constant pressure and $C_{V}$ is the specific heat at constant volume.The ratio of the slopes of the ... $\dfrac{C_{P}}{C_{V}} \\$ $\dfrac{C_{P}-C_{V}}{C_{V}} \\$ $\dfrac{C_{V}}{C_{P}}$
For an ideal gas, a constant pressure line and a constant volume line intersect at a point, in the Temperature $(T)$ versus specific entropy $\text{(s)}$ diagram. $C_{P}$...
GG
540
points
GG
answered
Apr 19, 2021
Thermodynamics
gateme-2020-set1
fluid-mechanics-and-thermal-science
thermodynamics
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–
1
answers
0
votes
GATE2020-ME-1: 17
For an ideal gas, the value of the Joule-Thomson coefficient is positive negative zero indeterminate
For an ideal gas, the value of the Joule-Thomson coefficient ispositivenegativezeroindeterminate
GG
540
points
GG
answered
Apr 19, 2021
Thermodynamics
gateme-2020-set1
fluid-mechanics-and-thermal-science
thermodynamics
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0
answers
0
votes
Thermometer questions in thermodynamics
In a new temperature scale degree(symbol)P ,the boiling point of water is 100 degree(symbol)P and the freezing point of water is 300 degree(symbol)P .Find the reading corresponding to 0 degree(symbol)P in centrigrade scale . Solve the question and explain each step properly with detailed solutions
In a new temperature scale degree(symbol)P ,the boiling point of water is 100 degree(symbol)P and the freezing point of water is 300 degree(symbol)P .Find the reading cor...
Kumar Pranjal
120
points
Kumar Pranjal
asked
Apr 10, 2021
0
answers
0
votes
GATE2020-ME-1: 55
The indicated power developed by an engine with compression ratio of $8$, is calculated using an air-standard Otto cycle (constant properties). The rate of heat addition is $10\: kW$ ... of the engine is $80$ percent. The brake power output of the engine is _________$kW$ (round off to one decimal place).
The indicated power developed by an engine with compression ratio of $8$, is calculated using an air-standard Otto cycle (constant properties). The rate of heat addition ...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Thermodynamics
gateme-2020-set1
numerical-answers
fluid-mechanics-and-thermal-science
thermodynamics
i.c-engines
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–
0
answers
0
votes
GATE2020-ME-1: 11
Match the following ... $P-3,\:Q-3,\:R-1\:,S-3$ $P-4,\:Q-3,\:R-2\:,S-1$
Match the following $$\begin{array}{|cl|cl|}\hline&\text{Heat treatment process} && \text{Effect}\\ \hlineP:& \text{Tempering} & 1.&\text{Strengthening} \\ \hlineQ:& ...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Heat Transfer
gateme-2020-set1
fluid-mechanics-and-thermal-science
heat-transfer
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–
0
answers
0
votes
GATE2020-ME-1: 14
Froude number is the ratio of buoyancy forces to viscous forces inertia forces to viscous forces buoyancy forces to inertia forces inertia forces to gravity forces
Froude number is the ratio ofbuoyancy forces to viscous forcesinertia forces to viscous forcesbuoyancy forces to inertia forcesinertia forces to gravity forces
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Fluid Mechanics
gateme-2020-set1
fluid-mechanics-and-thermal-science
fluid-mechanics
buoyancy
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–
0
answers
0
votes
GATE2020-ME-1: 15
Match the following non-dimensional numbers with the corresponding definitions: ... $P-3, Q-1, R-2, S-4$ $P-4, Q-3, R-1, S-2$ $P-3, Q-1, R-4, S-2$
Match the following non-dimensional numbers with the corresponding definitions:$\begin{array}{|c|c|c|cI|} \hline {} & \textbf{Non-dimensional number} & {} & \textbf{Def...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Fluid Mechanics
gateme-2020-set1
fluid-mechanics-and-thermal-science
fluid-mechanics
+
–
0
answers
0
votes
GATE2020-ME-1: 16
The velocity field of an incompressible flow in a Cartesian system is represented by $\overrightarrow{V}=2\left ( x^{2}-y^{2} \right )\widehat{i}+v\widehat{j}+3\widehat{k}$ Which one of the following expressions for $v$ is valid? $-4xz + 6xy$ $ – 4xy – 4xz$ $4xz – 6xy$ $4xy + 4xz$
The velocity field of an incompressible flow in a Cartesian system is represented by$$\overrightarrow{V}=2\left ( x^{2}-y^{2} \right )\widehat{i}+v\widehat{j}+3\widehat{k...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Fluid Mechanics
gateme-2020-set1
fluid-mechanics-and-thermal-science
fluid-mechanics
+
–
0
answers
0
votes
GATE2020-ME-1: 24
The compressor of a gas turbine plant, operating on an ideal intercooled Brayton cycle, accomplishes an overall compression ratio of $6$ in a two-stage compression process. Intercooling is used to cool the air coming out from the first stage to the ... gas are constant, the intercooling pressure for minimum compressor work is __________ $kPa$ (rounded off to $2$ decimal places).
The compressor of a gas turbine plant, operating on an ideal intercooled Brayton cycle, accomplishes an overall compression ratio of $6$ in a two-stage compression proces...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Applications
gateme-2020-set1
numerical-answers
fluid-mechanics-and-thermal-science
applications
turbomachinary
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–
0
answers
0
votes
GATE2020-ME-1: 25
In a concentric tube counter-flow heat exchanger, hot oil enters at $102^{\circ}C$ and leaves at $65^{\circ}C$. Cold water enters at $25^{\circ}C$ and leaves at $42^{\circ}C$. The log mean temperature difference $(LMTD)$ is ________ $^{\circ}C$ (round off to one decimal place).
In a concentric tube counter-flow heat exchanger, hot oil enters at $102^{\circ}C$ and leaves at $65^{\circ}C$. Cold water enters at $25^{\circ}C$ and leaves at $42^{\cir...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Heat Transfer
gateme-2020-set1
numerical-answers
fluid-mechanics-and-thermal-science
heat-transfer
heat-exchanger
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–
0
answers
0
votes
GATE2020-ME-1: 34
A small metal bead $(\text{radius}\: 0.5\: mm)$, initially at $100^{\circ}C$ , when placed in a stream of fluid at $20^{\circ}C$ , attains a temperature of $28^{\circ}C$ in $4.35$ ... heat transfer coefficient $(in\:W/m^{2}.K)$ between the metal bead and the fluid stream is $283.3$ $299.8$ $149.9$ $449.7$
A small metal bead $(\text{radius}\: 0.5\: mm)$, initially at $100^{\circ}C$ , when placed in a stream of fluid at $20^{\circ}C$ , attains a temperature of $28^{\circ}C$ ...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Heat Transfer
gateme-2020-set1
fluid-mechanics-and-thermal-science
heat-transfer
+
–
0
answers
0
votes
GATE2020-ME-1: 49
Consider steady, viscous, fully developed flow of a fluid through a circular pipe of internal diameter $\text{D}$. We know that the velocity profile forms a paraboloid about the pipe centre line, given by: $V=-C\left(r^{2}-\dfrac{D^{2}}{4}\right) m/s$ ... the control surface $\text{A-B}$, as shown in the figure, is proportional to $D^{n}$. The value of $n$ is ________.
Consider steady, viscous, fully developed flow of a fluid through a circular pipe of internal diameter $\text{D}$. We know that the velocity profile forms a paraboloid ab...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Fluid Mechanics
gateme-2020-set1
numerical-answers
fluid-mechanics-and-thermal-science
fluid-mechanics
flow-through-pipes
+
–
0
answers
0
votes
GATE2020-ME-1: 50
Air discharges steadily through a horizontal nozzle and impinges on a stationary vertical plate as shown in figure. The inlet and outlet areas of the nozzle are $0.1\:m^{2}\:\text{and}\:0.02\:m^{2}$ ... is $0.36\:kPa$, the gauge pressure at point $O$ on the plate is __________ $kPa$ (round off to two decimal places).
Air discharges steadily through a horizontal nozzle and impinges on a stationary vertical plate as shown in figure. The inlet and outlet areas of the nozzle are $...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Fluid Mechanics
gateme-2020-set1
numerical-answers
fluid-mechanics-and-thermal-science
fluid-mechanics
+
–
0
answers
0
votes
GATE2020-ME-1: 51
Air (ideal gas) enters a perfectly insulated compressor at a temperature of $310\: K$. The pressure ratio of the compressor is $6$. Specific heat at constant pressure for air is $1005\: J/kg . K$ and ratio of specific heats at constant pressure ... difference in enthalpies of air between the exit and the inlet of the compressor is _________ $kJ/kg$ (round off to nearest integer).
Air (ideal gas) enters a perfectly insulated compressor at a temperature of $310\: K$. The pressure ratio of the compressor is $6$. Specific heat at constant pressure for...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Thermodynamics
gateme-2020-set1
numerical-answers
fluid-mechanics-and-thermal-science
thermodynamics
+
–
1
answers
0
votes
GATE2020-ME-1: 52
One kg of air, initially at a temperature of $127^{\circ}C$ , expands reversibly at a constant pressure until the volume is doubled. If the gas constant of air is $287\: J/kg.K$, the magnitude of work transfer is ________ $kJ$ (round off to $2$ decimal places).
One kg of air, initially at a temperature of $127^{\circ}C$ , expands reversibly at a constant pressure until the volume is doubled. If the gas constant of air is $287\: ...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Thermodynamics
gateme-2020-set1
numerical-answers
fluid-mechanics-and-thermal-science
thermodynamics
+
–
0
answers
0
votes
GATE2020-ME-1: 53
For an ideal Rankine cycle operating between pressures of $30$ bar and $0.04$ bar,the work output from the turbine is $903\: kJ/kg$ and the work input to the feed pump is $3\: kJ/kg$. The specific steam consumption is _________ $kg/kW.h$ round off to $2$ decimal places).
For an ideal Rankine cycle operating between pressures of $30$ bar and $0.04$ bar,the work output from the turbine is $903\: kJ/kg$ and the work input to the feed pump is...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Thermodynamics
gateme-2020-set1
numerical-answers
fluid-mechanics-and-thermal-science
thermodynamics
+
–
0
answers
0
votes
GATE2020-ME-1: 54
For a Kaplan (axial flow) turbine, the outlet blade velocity diagram at a section is shown in the figure. The diameter at this section is $3\:m$.The hub and tip diameters of the blade are $2\:m$ and $4\:m$, respectively. The water volume flow ... rotational speed of the turbine is $300\:rpm$. The blade outlet angle $\beta$ is ________ degrees (round off to one decimal place).
For a Kaplan (axial flow) turbine, the outlet blade velocity diagram at a section is shown in the figure. The diameter at this section is $3\:m$.The hub and tip diam...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 6, 2021
Applications
gateme-2020-set1
numerical-answers
fluid-mechanics-and-thermal-science
applications
kaplan-turbines
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–
0
answers
0
votes
GATE2019 ME-2: 44
The aerodynamic drag on a sports car depends on its shape. The car has a drag coefficient of $0.1$ with the windows and the roof closed. With the windows and the roof open, the drag coefficient becomes $0.8$. The car travels at $44$ km/h with the ... round off to two decimal places), is __________ $km/h$ (The density of air and the frontal area may be assumed to be constant).
The aerodynamic drag on a sports car depends on its shape. The car has a drag coefficient of $0.1$ with the windows and the roof closed. With the windows and the roof ope...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 5, 2021
Fluid Mechanics
gateme-2019-set2
numerical-answers
fluid-mechanics
+
–
0
answers
0
votes
GATE2019 ME-2: 10
Sphere $1$ with a diameter of $0.1$ m is completely enclosed by another sphere $2$ of diameter $0.4$m. The view factor $F_{12}$ is $0.0625$ $0.25$ $0.5$ $1.0$
Sphere $1$ with a diameter of $0.1$ m is completely enclosed by another sphere $2$ of diameter $0.4$m. The view factor $F_{12}$ is$0.0625$$0.25$$0.5$$1.0$
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 5, 2021
Heat Transfer
gateme-2019-set2
view-factors
heat-transfer
fluid-mechanics-and-thermal-science
+
–
0
answers
0
votes
GATE2019 ME-2: 23
Water enters a circular pipe of length $L=5.0$ m and diameter $D=0.20$m with Reynolds number $Re_D=500$. The velocity profile at the inlet of the pipe is uniform while it is parabolic at the exit. The Reynolds number at the exit of the pipe is _________
Water enters a circular pipe of length $L=5.0$ m and diameter $D=0.20$m with Reynolds number $Re_D=500$. The velocity profile at the inlet of the pipe is uniform while it...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 5, 2021
Fluid Mechanics
gateme-2019-set2
numerical-answers
fluid-mechanics-and-thermal-science
fluid-mechanics
flow-through-pipes
+
–
0
answers
0
votes
GATE2019 ME-2: 24
A thin vertical flat plate of height $L$, and infinite width perpendicular to the plane of the figure, is losing heat to the surroundings by natural convection. The temperatures of the plate and the surroundings by natural convection. The temperatures of the plate and the ... plate is $h_1$ and that for the second plate is $h_2$, the value of the ratio $h_1/h_2$ is ____________
A thin vertical flat plate of height $L$, and infinite width perpendicular to the plane of the figure, is losing heat to the surroundings by natural convection. The tempe...
Lakshman Bhaiya
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Lakshman Bhaiya
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Mar 5, 2021
Heat Transfer
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numerical-answers
fluid-mechanics-and-thermal-science
heat-transfer
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GATE2019 ME-2: 33
The figure shows a heat engine (HE) working between two reservoirs. The amount of heat $(Q_2)$ rejected by the heat engine is drawn by a heat pump (HP). The heat pump receives the entire work output $(W)$ of the heat engine. If temperatures, $T_1 >T_3>T_2$, then the relation between ... $\text{COP}= 1 + \eta$ $\text{COP}= \eta^{-1}$ $\text{COP}= \eta^{-1} -1 $
The figure shows a heat engine (HE) working between two reservoirs. The amount of heat $(Q_2)$ rejected by the heat engine is drawn by a heat pump (HP). The heat pump rec...
Lakshman Bhaiya
21.7k
points
Lakshman Bhaiya
recategorized
Mar 5, 2021
Applications
gateme-2019-set2
fluid-mechanics-and-thermal-science
applications
i.c-engines
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