21. An irregular body may have more than one centre of gravity.
Yes
No
✅ The correct answer is option B.
Engineering Mechanics MCQs
22. The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplaner concurrent forces.
lie
do not lie
✅ The correct answer is option B.
23. The potential energy stored by a spring in compression, is called strain energy.
Yes
No
✅ The correct answer is option A.
24. If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.
change
does not change
✅ The correct answer is option B.
26. In a wormed geared pulley block, if the number of teeth on the worm wheel is doubled, then its velocity ratio is also doubled.
TRUE
FALSE
✅ The correct answer is option A.
27. In order to double the period of simple pendulum, the length of the string should be
halved
doubled
quadrupled
✅ The correct answer is option C.
28. When two elastic bodies collide with each other,
the two bodies will momentarily come to rest after collision
the two bodies tend to compress and deform at the surface of contact
the two bodies begin to regain their original shape
all of the above
✅ The correct answer is option D.
29. The wheels of a moving car possess
potential energy only
kinetic energy of translation only
kinetic energy of rotation only
kinetic energy of tran
✅ The correct answer is option D.
30. The terms ‘leverage’ and ‘mechanical advantage’ Of a compound lever have got the same meaning.
Correct
Incorrect
✅ The correct answer is option A.