Fresh water carrying pipelines in chemical industries are coloured with _______________ color?
A. Sea green
B. Brown
C. Yellow
D. Red
Month: March 2019
Holes of a sieve tray are arranged in triangular pitch of _________________ times the hole diameter?
Holes of a sieve tray are arranged in triangular pitch of _________________ times the hole diameter?
A. 1.5 to 2
B. 2.5 to 5
C. 5 to 10
D. 10 to 15
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate ?
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate ?
A. 2
B. ½
C. 4
D. 8
In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon______________________?
In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon______________________?
A. Baffle spacing
B. Clearance
C. Pitch
D. None of these
Correct use of ‘factor of safety’ is very important in equipment design. It is defined as the ratio of the___________________?
Correct use of ‘factor of safety’ is very important in equipment design. It is defined as the ratio of the___________________?
A. Ultimate stress to breaking stress
B. Ultimate stress to working stress
C. Working stress to ultimate stress
D. None of these
For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by____________________?
For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by____________________?
A. Di, opt = 3 Q0.36 ρ0.18
B. Di, opt = 3.9 Q0.45 ρ0.23
C. Di, opt = 7.6 Q0.36 ρ0.9
D. Di, opt = 3 Q0.36 ρ1.86 μ0.08
Which of the following material is seldom used for pressure vessel construction ?
Which of the following material is seldom used for pressure vessel construction ?
A. Rimmed still
B. Mild steel
C. Killed steel
D. Semi-killed steel
The stress developed in a material without any permanent set is called the____________________?
The stress developed in a material without any permanent set is called the____________________?
A. Ultimate stress
B. Yield stress
C. Elastic limit
D. Breaking stress
Column support for the roof of cylindrical storage tank must be provided for___________________?
Column support for the roof of cylindrical storage tank must be provided for___________________?
A. Small diameter tanks
B. Large diameter tanks
C. Small diameter tall tanks
D. All tanks irrespective of their heights and diameters
Corrosion allowance in the design of pressure vessel/chemical equipment is not necessary, if___________________?
Corrosion allowance in the design of pressure vessel/chemical equipment is not necessary, if___________________?
A. Plain carbon steel and cast iron parts are used
B. Wall thickness is > 30 mm
C. Material of construction is high alloy steel
D. Both B. & C.