1. A thermodynamic machine
2. A non-thermodynamic machine
3. A hypothetical machine
4. A hypothetical machine whose operation would violate the laws of thermodynamics
A hypothetical machine whose operation would violate the laws of thermodynamics
1. Conservation of heat
2. Conservation of work
3. Conversion of heat into work
4. Conversion of work into heat
Conversion of heat into work
1. Heat can't be transferred from low temperature source to high temperature source
2. Heat can be transferred for low temperature to high temperature source by using refrigeration cycle.
3. Heat can be transferred from low temperature to high temperature source if COP of process is more than unity
4. Heat can't be transferred from low temperature to high temperature source without the aid of external energy
Heat can't be transferred from low temperature to high temperature source without the aid of external energy
1. Carnot cycle
2. Joule cycle
3. Rankin cycle
4. Otto cycle
Rankin cycle
1. Carnot
2. Stirling
3. Ericson
4. None of the above.
None of the above.
1. Two isothermals and two is entropics
2. Two is entropics and two constant volumes
3. Two is entropics, one constant volume and one constant pressure
4. Two is entropics and two constant pressures
Two is entropics and two constant volumes
1. Working substance
2. Design of engine
3. Size of engine
4. Temperatures of source and sink.
Temperatures of source and sink.
1. Otto cycle is more efficient than Diesel cycle
2. Diesel cycle is more efficient than Otto cycle
3. Efficiency depends on other factors
4. Both Otto and Diesel cycles are equally efficient
Otto cycle is more efficient than Diesel cycle
1. Gas engine
2. Well lubricated engine
3. Petrol engine
4. Reversible engine.
Reversible engine.
1. A reversible cycle
2. An irreversible cycle
3. A semi-reversible cycle
4. An adiabatic irreversible cycle.
A reversible cycle