Engineering Thermodynamics (3131905) MCQs

MCQs of Basic Concepts of Thermodynamics

Showing 1 to 10 out of 24 Questions
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1.

A system

(a)

is a specified region, where a transfer of energy and/or mass are to be studied
(b)

cannot transfer either energy or mass to or from the surroundings
(c)

is a region of constant mass and only energy is allowed to cross the boundaries
(d)

has a mass transfer across its boundaries and the mass within the system is not constant
Answer:

Option (a)

2.

An open system is one in which

(a)

heat and work crosses the boundary of the system, but the mass of the working substance does not crosses the boundary of the system
(b)

mass of the working substance crosses the boundary of the system but the heat and work does not crosses the boundary of the system
(c)

both the heat and work as well as mass of the working substance crosses the boundary of the system
(d)

neither the heat and work nor the mass of the working substance crosses the boundary of the system
Answer:

Option (c)

3.

A pressure cooker is an example of which of the following?

(a)

Open System
(b)

Closed System
(c)

Isolated System
(d)

None of the mentioned
Answer:

Option (b)

4.

 A system in which energy can crosses the boundary of the system but the mass cannot is known as

(a)

open system
(b)

closed system
(c)

isolated system
(d)

none of these
Answer:

Option (b)

5.

Which of the following is true for a closed system?

(a)

Mass entering = mass leaving
(b)

Mass does not enter or leave the system
(c)

Mass entering can be more or less than the mass leaving
(d)

None of the mentioned
Answer:

Option (b)

6.

Which of the following is an example of a closed system?

(a)

Boiler
(b)

Compressor
(c)

IC engine 
(d)

Bomb calorimeter
Answer:

Option (d)

7.

 A system in which neither energy nor mass can crosses the boundary of the system is known as

(a)

open system
(b)

closed system
(c)

isolated system
(d)

none of these
Answer:

Option (c)

8.

Which of the following is true for the macroscopic process?

(a)

A certain quantity of matter is considered without taking into account the events occurring at the molecular level
(b)

Used in the study of statistical thermodynamics
(c)

Large numbers of variables are required to describe the system
(d)

The properties are defined for each molecule individually
Answer:

Option (a)

9.

Which of the following is not true for the microscopic process?

(a)

It is statistical thermodynamics
(b)

This approach is a concern with the individual behavior of matter
(c)

The description of the system is simple, only few properties are required.
(d)

The behavior of the system is found by using statistical methods
Answer:

Option (c)

10.

Which of the following is an intensive property of a thermodynamic system?

(a)

mass
(b)

volume
(c)

enthalpy
(d)

density
Answer:

Option (d)

Showing 1 to 10 out of 24 Questions
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