91. The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the __________ stress.
yield point
breaking
ultimate
none of these
✅ The correct answer is option C.
Process Equipment and Plant Design MCQs
92. Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.
300
600
1000
1500
✅ The correct answer is option B.
93. With increase in the number of shell passes, the value of FT
increases
decreases
remains same
remains same, only if the number of tube passes does not change.
✅ The correct answer is option A.
94. Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation?
Sorel-Lewis method.
McCabe-Thiele’s method.
Ponchon-Savarit method.
none of these.
✅ The correct answer is option A.
95. In a multipass shell and tube heat exchanger, the problem of differential expansion between the shell and tube passes is taken care of by using a
U-bend
floating head tube sheet
either (a) or (b)
neither (a) nor (b)
✅ The correct answer is option C.
97. Normal screwed fittings are used for pipes upto a diameter of __________ inches.
1.5
3
5
7
✅ The correct answer is option B.
98. __________ dished head is the strongest of all.
Hemispherical
Elliptical
Torispherical
none of these
✅ The correct answer is option A.
99. The stress developed in a material without any permanent set is called the
ultimate stress
yield stress
elastic limit
breaking stress
✅ The correct answer is option C.
100. Friction factor for turbulent flow in a new pipe is given by
f = 0.22 NRe0.5
✅ The correct answer is option B.