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Recent questions tagged turbomachinery
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GATE2017 ME-1: 34
The pressure ratio across a gas turbine (for air, specific heat at constant pressure, $c_{p}=1040 J/kg.K$ and ratio of specific heats, $\gamma=1.4$) is $10$. If the inlet temperature to the turbine is $1200$ K and the isentropic efficiency is $0.9$, the gas temperature at turbine exit is ________ $K$
Arjun
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Feb 27, 2017
by
Arjun
27.4k
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gateme-2017-set1
numerical-answers
fluid-mechanics-and-thermal-science
applications
turbomachinery
0
answers
0
votes
GATE2016-2-19
Consider a simple gas turbine (Brayton) cycle and a gas turbine cycle with perfect regeneration. In both the cycles, the pressure ratio is $6$ and the ratio of the specific heats of the working medium is $1.4$. The ratio of minimum to maximum ... $K$) in the regenerative cycle. The ratio of the thermal efficiency of the simple cycle to that of the regenerative cycle is _________
Arjun
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Feb 24, 2017
by
Arjun
27.4k
points
gateme-2016-set2
numerical-answers
fluid-mechanics-and-thermal-science
applications
turbomachinery
0
answers
0
votes
GATE2016-1-18
Consider two hydraulic turbines having identical specific speed and effective head at the inlet. If the speed ratio $\displaystyle{\left(\frac{N_1}{N_2}\right)}$ of the two turbines is $2$, then the respective power ratio $\displaystyle{\left(\frac{P_1}{P_2}\right)}$ is _____________
Arjun
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in
Applications
Feb 24, 2017
by
Arjun
27.4k
points
gateme-2016-set1
numerical-answers
fluid-mechanics-and-thermal-science
applications
turbomachinery
0
answers
0
votes
GATE2015-3-38
Steam enters a turbine at $30$ bar, $300^\circ C \: (u = 2750 \: kJ/kg$, $h = 2993 \: kJ/kg)$ and exits the turbine as saturated liquid at $15 \: kPa \: (u = 225 \: kJ/kg$, $h = 226 \: kJ/kg)$. Heat loss to the ... $kJ/kg$ of steam) is ________
Arjun
asked
in
Applications
Feb 24, 2017
by
Arjun
27.4k
points
gateme-2015-set3
numerical-answers
fluid-mechanics-and-thermal-science
applications
turbomachinery
0
answers
0
votes
GATE2015-1-55
Steam enters a well insulated turbine and expands isentropically throughout. At an intermediate pressure, $20$ percent of the mass is extracted for process heating and the remaining steam expands isentropically to $9 \: kPa$ ... If the flow rate of steam entering the turbine is $100$ $kg/s$, then the work output (in $MW$) is _________
Arjun
asked
in
Applications
Feb 24, 2017
by
Arjun
27.4k
points
gateme-2015-set1
numerical-answers
fluid-mechanics-and-thermal-science
applications
turbomachinery
0
answers
0
votes
GATE Mechanical 2014 Set 4 | Question: 47
Steam with specific enthalpy $(h)$ $3214$ $kJ/kg$ enters an adiabatic turbine operating at steady state with a flow rate $10$ $kg/s$. As it expands, at a point where h is $2920$ $kJ/kg$, $1.5$ $kg/s$ is extracted for heating ... = $2374$ $kJ/kg$. Neglecting changes in kinetic and potential energies, the net power output (in $kW$) of the turbine is _______
Arjun
asked
in
Applications
Feb 19, 2017
by
Arjun
27.4k
points
gateme-2014-set4
numerical-answers
fluid-mechanics-and-thermal-science
applications
turbomachinery
0
answers
0
votes
GATE Mechanical 2014 Set 3 | Question: 46
At the inlet of an axial impulse turbine rotor, the blade linear speed is $25 \: m/s$, the magnitude of absolute velocity is $100 \: m/s$ and the angle between them is $25^{\circ}$. The relative velocity and the axial component ... blade inlet and outlet velocity triangles are shown in the figure. Assuming no losses, the specific work (in $J/kg$) is _______
Arjun
asked
in
Applications
Feb 19, 2017
by
Arjun
27.4k
points
gateme-2014-set3
numerical-answers
fluid-mechanics-and-thermal-science
applications
turbomachinery
0
answers
0
votes
GATE Mechanical 2014 Set 3 | Question: 14
Consider the turbulent flow of a fluid through a circular pipe of diameter, D. Identify the correct pair of statements. The fluid is well-mixed The fluid is unmixed $Re_D$ < $2300$ $Re_D$ > $2300$ $I, III$ $II, IV$ $II, III$ $I, IV$
Arjun
asked
in
Applications
Feb 19, 2017
by
Arjun
27.4k
points
gateme-2014-set3
fluid-mechanics-and-thermal-science
applications
turbomachinery
0
answers
0
votes
GATE Mechanical 2014 Set 2 | Question: 47
Steam at a velocity of $10$ $m/s$ enters the impulse turbine stage with symmetrical blading having blade angle $30^\circ $. The enthalpy drop in the stage is $100 kJ$. The nozzle angle is $20^\circ$. The maximum blade efficiency (in percent) is _______
Arjun
asked
in
Applications
Feb 19, 2017
by
Arjun
27.4k
points
gateme-2014-set2
numerical-answers
fluid-mechanics-and-thermal-science
applications
turbomachinery
0
answers
0
votes
GATE ME 2013 | Question: 28
Specific enthalpy and velocity of steam at inlet and exit of a steam turbine, running under steady state, are as given below: ... in $kW$ by the steam turbine per $kg$ of steam flow rate, is $901.2$ $911.2$ $17072.5$ $17082.5$
piyag476
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Feb 19, 2017
by
piyag476
1.4k
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gateme-2013
fluid-mechanics-and-thermal-science
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