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Molecular Physics | Thermodynamics
A nozzle is a device for increasing the velocity of a steady flowing steam of fluid.at the inlet to a certain nozzle the enthalpy of the fluid is 3052kj/kg and the velocity is 60m/s. At the exit from the nozzle the enthalpy is 2790kj/kg the nozzle is horizontal and there is negligible heat loss from it
Find the velocity at the nozzle exit
If the inlet area is 0.1m² and specific volume at inlet is 0.19m³/kg find the rate of flow of fluid
If the specific volume at the nozzle exit is 0.5m³/kg find the exit area of the nozzle
Molecular Physics | Thermodynamics
Any material with an unequal number of electrons or protons could generally be termed as?
Molecular Physics | Thermodynamics
The temperature of n moles of ideal gas is increased from T to 4T through a process for which pressure P = a T^(-1) ,where 'a' is a constant. The work done by the gas is ?
Molecular Physics | Thermodynamics
The specific heat at constant pressure of 1kg fluid undergoing a MF fluid constant pressure process is given by
Cp(2.5+40÷T+20)kg/kg⁰C
Where T is in ⁰C.
The pressure during the process is maintained at 2 bar and volume changes from 1m³ to 1.8m³ and temperature changes from 50⁰C to 450⁰C. Determine
(i)Heat added
(ii)Work done
(iii)Change in internal Energy
(iv)Change in Enthalpy
Cp(2.5+40÷T+20)kg/kg⁰C
Where T is in ⁰C.
The pressure during the process is maintained at 2 bar and volume changes from 1m³ to 1.8m³ and temperature changes from 50⁰C to 450⁰C. Determine
(i)Heat added
(ii)Work done
(iii)Change in internal Energy
(iv)Change in Enthalpy
Molecular Physics | Thermodynamics
A steel block weights 39.9 N has a volume of 0.0045 m3 submerged in fresh water , decide whether the block floats or sinks in the water ? ( Hint : density of Water = 1000 kglm3)
Molecular Physics | Thermodynamics
0.05kg of CO² with MW=44,occupying a volume of 0.03m³ at 1.025bar,is compressed reversible until the pressure is 6.15bar. Calculate final temperature, the work done on the CO²,the heat flow to or form the cylinder walls
(i)when the process is according to law pV¹.⁴=constant
(ii)when the process is Isothermal
(iii)when the process takes place in a perfectly thermal insulated cylinder.
Assume CO² to be a perfect gas takes Y=1.3
(i)when the process is according to law pV¹.⁴=constant
(ii)when the process is Isothermal
(iii)when the process takes place in a perfectly thermal insulated cylinder.
Assume CO² to be a perfect gas takes Y=1.3
Molecular Physics | Thermodynamics
Calculate the area expansivity and volume expansivity of a brass of area 120m and 120m respectively that assumes a new area and volume of 130m and 130m respectively when the linear expansivity is 0.00005 through a temperature of 50 degrees Celsius
Molecular Physics | Thermodynamics
What will be the new area of 400cm square of a solid if it's temperature is raised by 10kelvin
Molecular Physics | Thermodynamics
0.05kg of CO2 with MW=44, occupying a volume of 0.03m³ at 1.025bar, is compressed reversible until the pressure is 6.15bar
Calculate the final temperature, the work done on the CO², the heat flow to or from the cylinder walls
When the process is according to law PV 1.4=constant
When the process is isothermal
When the process takes place in a perfectly thermally insulated cylinder
Assume CO2 to be a perfect gas take 1.3
Calculate the final temperature, the work done on the CO², the heat flow to or from the cylinder walls
When the process is according to law PV 1.4=constant
When the process is isothermal
When the process takes place in a perfectly thermally insulated cylinder
Assume CO2 to be a perfect gas take 1.3
Molecular Physics | Thermodynamics
A certain perfect gas is compressed reversible from 1bar, 17°c to a pressure of 5bar in a perfect thermally insulated cylinder, the final temperature being 77°c
The work done on the gas during the compression is 45kj/kg
Calculate CV, R and the molecular weight of the gas
The work done on the gas during the compression is 45kj/kg
Calculate CV, R and the molecular weight of the gas
