Explore topic-wise MCQs in Fluid Mechanics.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the variation of cp, cv and k in case of gases when the temperature increases?

A. cp and cv decreases with temperature, and k increases
B. cp and cv increase with temperature, and k decreases
C. cp and cv increase with temperature, and k increases
D. cp and cv decreases with temperature, and k decreases
Answer» C. cp and cv increase with temperature, and k increases
Discussion
2.

Determine the compressibility of an incompressible fluid, if the pressure of the fluid is changed from 70 N/m2 to 130 N/m2. The volume of the liquid changes by 0.15 percent.

A. 0.0025 m<sup>2</sup>/N
B. 0.0050 m<sup>2</sup>/N
C. 0.0070 m<sup>2</sup>/N
D. 0.0012 m<sup>2</sup>/N
Answer» B. 0.0050 m<sup>2</sup>/N
Discussion
3.

A cylinder of 0.8 m3 in volume contains superheated steam at 70 and .4 N/m2 absolute pressure. The superheated steam is compressed to .3 . Find pressure and temperature.

A. 0.74 N/m<sup>2</sup>, 422.3
B. 1.48 N/m<sup>2</sup>, 422.3
C. 0.74 N/m<sup>2</sup>, 844.6
D. 1.48 N/m<sup>2</sup>, 844.6
Answer» B. 1.48 N/m<sup>2</sup>, 422.3
Discussion
4.

A gas weighs 16 N/m3 at 30 and at an absolute pressure of 0.35 N/mm2. Determine the gas constant.

A. 708.23
B. 354.11
C. 531.17
D. 1062.34
Answer» B. 354.11
Discussion
5.

Calculate the pressure exerted by 9 kg of air at a temperature of 20 if the volume is 0.8m3. Assuming ideal gas laws are applicable.

A. 946 kN/m<sup>2</sup>
B. 1892 kN/m<sup>2</sup>
C. 1419 kN/m<sup>2</sup>
D. None of the mentioned
Answer» B. 1892 kN/m<sup>2</sup>
Discussion
6.

If there is no exchange of heat between system and surrounding where system comprises of a compressible fluid but the heat is generated due to friction, the process is an adiabatic.

A. True
B. False
Answer» C.
Discussion