Chemical Engineering Subcategories

Chemical Engineering	Chemical Reaction
Polymer Technology	Fuels and Combustion
Refractory Technology	Fluid Mechanics for Chemical
Thermodynamics for Chemical	Materials and Construction
Fertilizer Technology	Chemical Environmental Engineering

Stoke’s equation is valid in the Reynolds number range__________________?

A. 0.01 to 0.1
B. 0.1 to 2
C. 2 to 10
D. 10 to 100

Purpose of relief valve in a reciprocating pump is to___________________?

A. Protect the pump against developing excessive pressure
B. Facilitate unidirectional flow of liquid
C. Reduce the discharge pressure
D. Control the rate of discharge

In isotropic turbulence, the _____________ are equal to each other?

A. Temporal velocity components
B. Mean square of velocity fluctuations in the three co-ordinate directions
C. Root mean square of velocity fluctuations in the three co-ordinate directions
D. None of these

What is the maximum theoretical suction lift (metres) of a reciprocating pump ?

A. 5
B. 10
C. 50
D. 100

Which of the following facilitates close control of flow of fluids ?

A. Gate valve
B. Globe valve
C. Butterfly valve
D. Check valve

Lower BWG means _____________ of the tube?

A. Lower thickness
B. Lower cross-section
C. Outer diameter
D. Inner diameter

Pressure drop (Δp) for a fluid flowing in turbulent flow through a pipe is a function of velocity (V) as___________________?

A. V1.8
B. V-0.2
C. V2.7
D. V2

Centrifugal pumps as compared to reciprocating pumps__________________?

A. Run at a lower speed for the same discharge
B. Do not need priming
C. Deliver fluid with pulsating/fluctuating discharge
D. Can be run with discharge line valve closed for a short interval

Transition length for a turbulent fluid entering into a pipe is around _____________ times the pipe diameter?

A. 5
B. 50
C. 500
D. 5000

The boundary layer thickness at a given section along a flat plate _____________ with increasing Reynold’s number?

A. Increases
B. Decreases
C. Remain same
D. May increase or decrease