Questions and answers for exam Preparation

MCQs

Total Questions : 1709 | Page 168 of 171 pages

Question 1671. General energy equation holds for_________________?

steady flow
turbulent flow
laminar flow
non-uniform flow
all of the above

Discuss Question

Answer: Option D. -> non-uniform flow
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1672. The velocity of jet of water travelling out of opening in a tank filled with water is proportional to___________________?

head of water (h)
h2
V/T
h2
h3/1.

Discuss Question

Answer: Option C. -> V/T
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1673. A streamline is defined as the line ________________?

parallel to central axis flow
parallel to outer surface of pipe
of equal yelocity in a flow
along which the pressure drop is uniform
which occurs in all flows

Discuss Question

Answer: Option C. -> of equal yelocity in a flow
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1674. Uniform flow occurs when___________________?

the direction and magnitude of the velocity at all points are identical
the velocity of successive fluid pai-ticles, at any point, is the same at suc¬cessive periods of time
the magnitude and direction of the velocity do not change from point to point in the fluid
the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plsr.e
velocity, depth, pressure, etc. change from point to point in the fluid flow

Discuss Question

Answer: Option C. -> the magnitude and direction of the velocity do not change from point to point in the fluid
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1675. A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is__________________?

0.83
0.6
0.4
0.3
none of the above

Discuss Question

Answer: Option B. -> 0.6
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1676. The region between the separation streamline and the boundary surface of the solid body is known as_________________?

wake
drag
lift
boundary layer
aerofoil section

Discuss Question

Answer: Option A. -> wake
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1677. The upper surface of a weir over which water flows is known is________________?

crest
nappe
sill
weir top
contracta

Discuss Question

Answer: Option C. -> sill
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1678. Hydrometer is used to determine________________?

specific gravity of liquids
specific gravity of solids
specific gravity of gases
relative humidity
density

Discuss Question

Answer: Option A. -> specific gravity of liquids
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1679. For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal__________________?

ratio of inertial force to force due to viscosity
ratio of inertial force to force due to gravitation
ratio of inertial force to force due to surface tension
all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity

Discuss Question

Answer: Option D. -> all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 1680. Cavitation will begin when______________________?

the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid
pressure becomes more than critical pressure
flow is increased
pressure is increased
none of the above

Discuss Question

Answer: Option A. -> the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!