Engineering

Boost your preparation with the latest Engineering MCQs with answers and explanations. Our collection covers civil engineering, electrical engineering, mechanical engineering, electronics, software engineering, and other core subjects. These multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, PEC exams, university entry tests, and job interviews. Practice online with updated Engineering MCQs to strengthen concepts, improve technical knowledge, and perform better in exams and recruitment tests.

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4034. The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

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1-May
20-40
100-150
1000-1500
✅ The correct answer is option B.

4035. In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a

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clearance of 25-75 mm.
cap pitch of 1.3-2 times the cap diameter.
either ‘a’ or ‘b’.
neither ‘a’ nor ‘b’.
✅ The correct answer is option C.

4038. In the design of a shell and tube heat exchanger, the corrosion allowance

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need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc.
for carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm.
for internal cover and tube sheet is provided on both the sides.
all (a), (b) & (c).
✅ The correct answer is option D.