Explore topic-wise MCQs in Machine Design.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Design knowledge and support exam preparation. Choose a topic below to get started.

1.

Number of rivets in the circumferential joint can be found by which formula? Symbols have their usual meanings.

A. (D/d) x2(P/ )
B. (D/d) x(P/ )
C. (d/D)x(P/ )
D. (D/d)x(P/ )
Answer» C. (d/D)x(P/ )
Discussion
2.

Longitudinal and circumferential both types of joints try to make a ring from the steel plate.

A. True
B. False
Answer» C.
Discussion
3.

Calculate the thickness of the strap required in longitudinal butt joint if pitch of the rivets is 150mm and diameter of rivets 30mm. Also thickness of plate is 20mm.

A. None of the listed
B. 16.7mm
C. 13.4mm
D. 10.2mm
Answer» C. 13.4mm
Discussion
4.

If number of rivets subjected to single shear per pitch length is 2 and those subjected to double shear per pitch length are 3, then find the shear resistance of rivets is diameter of rivets is 20mm and permissible shear 60N/mm .

A. None of the listed
B. 146.1kN
C. 150.7kN
D. 140.2kN
Answer» D. 140.2kN
Discussion
5.

A cylindrical pressure vessel with a 2m wide inside diameter is subjected to internal steam pressure of 1.5Mpa. Calculate the thickness of the plate required if corrosion allowance is considered as 2mm. The permissible value of tensile stress is 80N/mm .

A. 15mm
B. 19mm
C. 21mm
D. 17mm
Answer» D. 17mm
Discussion
6.

The rivets in outer row of longitudinal boiler shell butt joint are subjected to double shear.

A. True
B. False
Answer» C.
Discussion
7.

Unwin s formula is used to find _____ of rivets.

A. Diameter
B. Thickness
C. Strength
D. None of the listed
Answer» B. Thickness
Discussion
8.

Corrosion allowance is the metal removed to reduce the thickness required to withstand internal pressure.

A. True
B. False
Answer» C.
Discussion