Process Control & Instrumentation Mcqs for Chemical

Q.  The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K (s + 1)/[2 (2s + 1) (3s + 1)] will have a definite number of loci for variation of K from 0 to ∞. The number of loci is_______________?

a. 1
b. 2
c. 3
d. 4


ANSWER: See Answer
 
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MCQs:  In a distillation column, bubble caps are located on trays with a pitch of ______________ times the outside diameter of the caps?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  ______________ closure is the weakest enclosure for cylindrical vessels?
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MCQs:  High pressure fluid in a shell and tube heat exchanger should preferably be routed through the________________?
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MCQs:  What is the slope of the feed line, if the feed to a distillation column is a saturated liquid ?
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MCQs:  ___________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids?
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MCQs:  For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for dia of the tank in question), the thickness of the courses of shell_________________?
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MCQs:  Pick out the wrong statement?
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MCQs:  The minimum baffle height should be ______________?
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MCQs:  In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the_______________?
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MCQs:  Pick out the wrong statement pertaining to shell and tube heat exchanger_______________?
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MCQs:  In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ _____________ cms?
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MCQs:  Practical dividing line between a ductile and brittle materials is suggested, when the ultimate elongation is about 5%. Generally, larger the knuckle radius, stronger is the corner torus section of a head. The knuckle radius provided should be less than ______________ of the head?
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MCQs:  The LMTD correction factor (FT) is defined as the __________________?
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MCQs:  Which of the following is the best tube material from thermal conductivity point of view alone ?
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MCQs:  Power required for agitation depends upon the______________________?
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MCQs:  Stage efficiency for packed tower varies with the____________________?
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MCQs:  Tube wall thickness depends on the corrosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than _____________ mm outside diameter is generally not recommended for fouling fluids ?
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MCQs:  In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around __________________?
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MCQs:  In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is__________________?
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MCQs:  If ‘D’ is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of__________________?
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