Review each question and reveal answers to strengthen your understanding
1 Consider the function f(x) = |x| in the interval -1 ≤ x ≤ 1. At the point x = 0, f(x) is
✅ Correct Answer: 3
2At x = 0, the function f (x) = x3 + 1 has
✅ Correct Answer: 4
3 The area enclosed between the straight line y = x and the parabola y = x2 in the x-y plane is
✅ Correct Answer: 1
4For a long slender column of uniform cross section, the ratio of critical buckling load for the case with both ends clamped to the case with both ends hinged is
✅ Correct Answer: 3
5A thin walled spherical shell is subjected to an internal pressure. If the radius of the shell is increased by 1% and the thickness is reduced by 1%, with the internal pressure remaining the same, the percentage change in the circumferential (hoop) stress is
✅ Correct Answer: 4
6 A circular solid disc of uniform thickness 20 mm, radius 200 mm and mass 20 kg, is used as a flywheel. If it rotates at 600 rpm, the kinetic energy of the flywheel, in Joules is
✅ Correct Answer: 2
7Which one of the following configurations has the highest fin effectiveness?