Q/2
Q/4
Q/8
Q/16
✅ The correct answer is option D.
Chemical Engineering MCQs
Priming is needed in a __________ pump.
Reciprocating
Gear
Centrifugal
Diaphragm
✅ The correct answer is option C.
Which is the correct relationship for a centrifugal pump? (where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm)
D = 1840 H0.5/N
D = 1840 N/H0.5
H = 1840 D0.5/N
D = 1840 H/N
✅ The correct answer is option A.
Reynolds number is the ratio of
Viscous forces to gravity forces
Inertial forces to viscous forces
Viscous forces to inertial forces
Inertial forces to gravity forces
✅ The correct answer is option B.
Theoretical head developed by a centrifugal pump does not depend upon the __________ the impeller.
Radius of
Speed of
Fluid velocity leaving
None of these
✅ The correct answer is option D.
Upto what value of ‘Mach number’, a fluid may be considered as incompressible?
0.03
0.3
3
10
✅ The correct answer is option B.
The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.
1.8
12.4
186.2
736.4
✅ The correct answer is option B.
Applicability of Bernoulli’s equation is limited to a/an __________ fluid, that does not exchange shaft work with the surroundings.
Incompressible
Non-viscous
Both A and B
Neither A nor B
✅ The correct answer is option C.
The maximum delivery pressure of a reciprocating compressor may be about __________ kg/cm².
1000
2000
3000
4000
✅ The correct answer is option D.
The pressure at a point in a fluid is not the same in all directions, when the fluid is viscous and
Moving
Static
Cold
Hot
✅ The correct answer is option A.