Question 11 Mark
In a cyclic process, work done by the system is _________________.
Answer
View full question & answer→In a cyclic process, work done by the system is equal to heat given to system.
Questions
Fill In The Blanks[1 Marks ]
🎯
Test yourself on this topic
14 questions · timed · auto-graded
Question 21 Mark
Carnot engine is a __________.
- Irreversible.
- Petrol engine.
- Reversible.
- Diesel engine.
Answer
View full question & answer→- Reversible.
Explanation:
Process starts from P1, V1, T1 and reverses back to P1, V1, T1 after doing work (given by area enclosed). Here p, V, T reverse back, work done is not reversed back.
Carnot engine is a reversible engine working between two temperatures.
Question 31 Mark
The efficiency of the Carnot engine is ______________ the nature of the working substance.
Answer
View full question & answer→The efficiency of the Carnot engine is independent the nature of the working substance.
Question 41 Mark
What are the four steps in a Carnot's engine?
Answer
View full question & answer→Isothermal expansion, adiabatic expansion, isothermal compression and adiabatic compression are four steps.
Question 51 Mark
Relation between molar specific heat at constant volume and molar specific heat at constant pressure (C) is _________.
Answer
View full question & answer→Relation between molar specific heat at constant volume and molar specific heat at constant pressure (C) is Cp - Cv = R.
Question 61 Mark
Device which converts continuously heat energy into mechanical energy in a cyclic process is known as _________.
Answer
View full question & answer→Device which converts continuously heat energy into mechanical energy in a cyclic process is known as heat engine.
Question 71 Mark
Thermodynamic process in which temperature remains constant is called an ________.
Answer
View full question & answer→Thermodynamic process in which temperature remains constant is called an isothermal process.
Question 81 Mark
If the temperature of the source is increased, the efficiency of a Carnot engine ________________.
Answer
View full question & answer→If the temperature of the source is increased, the efficiency of a Carnot engine increases.
Question 91 Mark
'Heat cannot itself flow from a body at lower temperature to a body at higher temperature' is a statement in consequence of ________________.
Answer
View full question & answer→'Heat cannot itself flow from a body at lower temperature to a body at higher temperature' is a statement in consequence of second law of thermodynamic.
Question 101 Mark
When state variable of a thermodynamic system do not change system is said to be in _________.
Answer
View full question & answer→When state variable of a thermodynamic system do not change system is said to be in thermodynamic equilibrium.
Question 111 Mark
As per sign conventions, heat absorbed by a system is _________ and heat given out by a system is _________.
Answer
View full question & answer→As per sign conventions, heat absorbed by a system is positive and heat given out by a system is negative.
Question 121 Mark
First law of thermodynamics is just a restatement of the law of ________________.
Answer
View full question & answer→First law of thermodynamics is just a restatement of the law of conservation of energy.
Question 131 Mark
When there is no change in temperature whether heat is taken in or given out then heat capacity of the substance is ___________.
Answer
View full question & answer→When there is no change in temperature whether heat is taken in or given out then heat capacity of the substance is infinite.
Question 141 Mark
According to _________________ it is impossible to construct self perpetual machine that transfer heat from a body at lower temperature to another at higher temperature.
Answer
View full question & answer→According to clausius statement it is impossible to construct self perpetual machine that transfer heat from a body at lower temperature to another at higher temperature.