| The gases are considered incompressible when Mach number is |
A) equal to 1.0
B) equal to 0.5
C) equal to 0.3
D) equal to 0.2
| Dynamics Viscosity (m) has the dimension as: |
A) MLT–2
B) ML–1T–1
C) ML–1T–2
D) M–1L–1T–1
| The weight per unit volume of a liquid at a standard temperature and pressure is called |
A) specific weight or weight density
B) mass density
C) specific gravity
D) None of above
| The terminal velocity of a sphere settling in a viscous fluid varies as |
A) the Reynolds number
B) the square of its diameter
C) Its diameter
D) viscosity of the fluid
| Stoke is the unit of |
A) Surface tension
B) Dynamic viscosity
C) Kinematic viscosity
D) Turbulence shear
| The specific gravity of water is taken as |
A) 0.1
B) 0.001
C) 1
D) 0.0001
| A vessel of 4 m3 contains an oil which weighs 30 kN. The specific weight of this oil is _____ |
A) 4.5 kN/m3
B) 6.0 kN/m3
C) 7.5 kN/m3
D) 10 kN/m3
| Poise is the unit of _____ |
A) mass density
B) kinematic viscosity
C) viscosity
D) velocity gradient
| Which of the following fluids can be classified as non-Newtonian? 1. Kerosene oil 2. Diesel oil 3. Human blood 4. Toothpaste 5. Water Select the correct answer using the codes given below : |
A) 1 and 2
B) 3 and 4
C) 2 and 5
D) 1 and 5
| The mercury does not wet the glass. This is due to the property of liquid known as _____ |
A) Cohesion
B) Adhesion
C) Viscosity
D) Surface Tension
| In SI system, the symbol for density is |
A) m3/s
B) N/m3
C) kg/m3
D) kg
| A fluid is a substance that i. cannot remain at rest when subjected to shearing stress ii. has a viscosity that always decrease with the increase in temperature iii. is essentially incompressible |
A) Only (i)
B) (i) and (ii)
C) (ii) and (iii)
D) (i), (ii) and (iii)
| If a Mohr circle is drawn for a fluid element inside a fluid body at rest, it would be |
A) A circle not touching the origin
B) A circle touching the origin
C) A point on the normal stress axis
D) A point on the shear stress axis
