Applied Science >> EME


1 . In thermodynamics “System” is

 a. A definite area where some thermodynamic process are takes place   b. A non-defined area for process to take place 
 c. A common area for process to take place   d. None of above 
Answer : A
A definite area where some thermodynamic process are takes place.


2 . In thermodynamics “Surrounding” is called

 a. Closed system   b. Everything external to the system 
 c. A fixed boundary    d. Movable boundary 
Answer : B
Everything external to the system is called Surrounding.


3 . In thermodynamics “Boundary” is called

 a. A bigger system    b. A bigger surrounding  
 c. A envelope which separate the system from surrounding    d. None of above 
Answer : C
A envelope which separate the system from surrounding is called Boundary.


4 . In an Open system

 a. Only energy of substance crosses the system boundary, but mass is not allowed   b. Only mass of substance crosses the system boundary, but energy is not allowed 
 c. Neither energy nor mass are crosses the system boundary   d. Energy and mass of working substance are crosses the system boundary 
Answer : D
Energy and mass of working substance are crosses the system boundary.


5 . In an Closed system

 a. Only energy of substance crosses the system boundary, but mass is not allowed   b. Only mass of substance, crosses the system boundary, but energy is not allowed 
 c. Neither energy nor mass are crosses the system boundary   d. Energy and mass of working substance are crosses the system boundary 
Answer : A
Only energy of substance crosses the system boundary, but mass is not allowed.


6 . In Isolated system

 a. Only energy of substance crosses the system boundary, but mass is not allowed   b. Only mass of substance, crosses the system boundary, but energy is not allowed 
 c. Neither energy nor mass are crosses the system boundary   d. Energy and mass of working substance are crosses the system boundary 
Answer : C
Neither energy nor mass are crosses the system boundary.


7 . Boiler is an example of ..……………system

 a. Open   b. Closed  
 c. Isolated    d. None of above 
Answer : A
Boiler is an example of Open system.


8 . Bomb calorimeter is an example of ………………system.

 a. Open   b. Closed  
 c. Isolated    d. None of above  
Answer : B
Bomb calorimeter is an example of closed system

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