Q1:

A closed thermodynamic systems is one in which;

Q2:

Which one of the following is the extensive property of a thermodynamic system?

Q3:

Ice kept in a well-insulated thermo flask is an example of which system?

Q4:

Two blocks which are at different states are brought into contact with each other and allowed to reach a final state of thermal equilibrium. The final temperature attained is specified by the

Q5:

Which of the following are intensive properties?

1. Kinetic energy

2. Thermal conductivity

3. Pressure

4. Entropy

Select the correct answer using the code given below:

Q6:

Which one of the following thermodynamic processes approximates the steaming of food in a pressure cooker?

Q7:

Match List – I with List – II and select the correct answer using the code given below the lists:

List – I	List – II
A. Interchange of matter is not possible in a system	1. Open
B. Any processes in which the system returns	2. System
C. Interchange of matter is possible in a system	3. Closed system
D. The quantity of matter under consideration in thermodynamic is called	4. Cycle

 

Q8:

Match List-I (Process) with List-II (Index n in pVⁿ = C) and select the correct answer using the codes given below the lists:

List – I	List – II
A. Adiabatic	1. n = Infinity
B. Isothermal	2. n = Cp/Cv
C. Constant pressure	3. n = 1
D. constant volume	4. n = Cp/Cv – 1
	5. n = zero

 

Q9:

A perfect gas at 27⁰C was heated until its volume was doubled using the following three different processes separately:

1. Constant pressure process

2. Isothermal process

3. Isentropic process

Which one of the following is the correct sequence in the order of increasing value of the final temperature of the gas reached by using the above three different processes?

Q10:

Identify the process for which the two integrals ${\displaystyle \int pdV}$ and $-{\displaystyle \int Vdp}$, evaluated between any two given states gives the same value:

Q11:

Change in enthalpy in a closed system is equal to the heat transferred, if the reversible process takes place at constant

Q12:

Which one of the following is correct?

The cyclic integral of ($\delta$Q – $\delta$W) for a process is

Q13:

$W={\displaystyle \int pdv}$can be applied

Q14:

Gas contained in a closed system consisting of piston cylinder arrangement is expanded. Work done by the gas during expansion is 50 kJ. Decreases in internal energy of the gas during expansion is 30 kJ. Heat transfer during the process is equal to

Q15:

A closed system undergoes a process 1-2 for which the values of Q_1-2 and W_1-2 are +20 kJ and +50 kJ, respectively. If the system is returned to state 1 and Q_2-1 is –10kJ, what is the value of the work W_2-1?

Q16:

A fluid flowing along a pipe line undergoes a throttling process from 10 bar to 1 bar is passing through a partially open valve. Before throttling, the specific volume of the fluid is 0.5 m³/kg and after throttling it is 2.0 m³/kg. The change in specific internal energy during the throttling process is

Q17:

Which one of the following is the steady flow energy equation for a boiler?

Q18:

A balloon which is initially collapsed and flat is slowly filled with a gas at 100 kPa so as to form into a sphere of 1 m radius. The work done by the gas in the balloon during the filling process is:

Q19:

Direction of a thermodynamic process is given by

Q20:

Relation between COP of heat pump and refrigerator is:

Q21:

Clausius inequality is represented following:

Q22:

Which of the following cycle represents Carnot cycle

Q23:

Area of the curve on T-S curve when projected on entropy axis gives:

Q24:

Entropy of a system:

Q25:

A heat engine receives heat at the rate of 1500 kJ/min and gives an output of 8.2 kW then the thermal efficiency and the rate of heat rejection of the engine are: