Chemical Engineering - Fluid Mechanics

Exercise :: Fluid Mechanics - Section 8
41.
Poise is converted into stoke by

A.
multiplying with density (gm/c.c). B.
dividing by density (gm/c.c). C.
multiplying with specific gravity. D.
dividing by specific gravity.

Answer: Option B

Explanation:

42.
The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop fo __________ fluid.

A.
dilatant B.
pseudoplastic C.
Bingham plastic D.
Newtonion

Answer: Option A

Explanation:

43.
Kinetic energy of fluid per unit weight represented by the velocity head is given by

A.
2v ^{2} /g_{c} B.
v ^{2} /2g_{c} C.
ρv^{2} /g_{c} D.
ρ.v^{2} /2g_{c}

Answer: Option B

Explanation:

44.
At a constant speed of the centrifugal pump . it __________ the impeller diameter.

A.
capacity varies directly with B.
head varies as the square of C.
horsepower varies as the cube of D.
all (a), (b) and (c)

Answer: Option D

Explanation:

45.
The pressure co-efficient is the ratio of pressure forces to __________ forces.

A.
viscous B.
inertial C.
gravity D.
surface tension

Answer: Option A

Explanation: