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Mech_59
A 4kW, 20 liter water heater is switched on for 10 minutes. The heat capacity Cp for water is 4 kJ/kgK. Assuming all the electrical energy has gone into heating the water, what is the increase in the water temperature?
on 18th November 2022 in Mechanical engineering.
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Mech_59
An ideal gas undergoes an isothermal expansion from state R to state S in a turbine as shown in the diagram given below: The area of shaded region is 1000 Nm. What is the amount of turbine work done during the process?
on 18th November 2022 in Mechanical engineering.
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Mech_59
The data given in the table refers to an engine based on Carnot cycle, where Q1 = Heat received (kJ/min), Q2 = Heat rejected (kW), W = Work output(kW). If heat received by the engine is 2000kJ/minute what is the work output ?
on 18th November 2022 in Mechanical engineering.
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Mech_59
A system while undergoing a cycle A-B-C-D-A has the value of heat and work transfers as given in the table: What is the power developed in kW ?
on 18th November 2022 in Mechanical engineering.
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Mech_59
A gas expands from pressure P1 to pressure P2(P2=P1/10). If the process of expansion is isothermal, the volume at the end of expansion is 0.55 m^3. If the process of expansion is adiabatic, what is the volume at the end of expansion?
on 17th November 2022 in Mechanical engineering.
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Mech_59
3 moles of an ideal gas is compressed to half the initial volume at a constant temperature of 300 K. What is the work done in the process?
on 17th November 2022 in Mechanical engineering.
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Mech_59
A compressor delivers 4 m^3 of air having a mass of 5 kg. What is the specific weight and specific volume of air being delivered.
on 16th November 2022 in Mechanical engineering.
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Mech_59
A gas mixture consists of 3 kg of oxygen, 5 kg of nitrogen and 12 kg of methane. What is the mass fraction and mole fraction of oxygen ?
on 15th November 2022 in Mechanical engineering.
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Mech_59
In a new temperature scale, the boiling and freezing points of water at one atm are 100 degree and 300 degree respectively. Correlate this scale with Centigrade scale. The reading of 0 degree in the centigrade will be ?
on 8th November 2022 in Mechanical engineering.
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