Civil Engineering - UPSC Civil Service Exam Questions - Discussion

22. 

In each of the following examples certain quantity of work 'W' is done.
1. The point of application of a force of (50i + 60j + 80k) in kN units moves through a distance given by (6i + 5j + 2.5k) in metres.
2. A pump raises 2m3 of water through a height of 20 m (Take g = 10 m/s2).
3. A shaft delivering a torque = 200 kNm makes 0.75 revolution.
4. A couple (30i - 20j + 100k) in kNm units acting on a body rotates it through an angular displacement of (2i + 3j + 6k) radians.
The correct sequence of these quantities of work 'W' arranged in order of their increasing magnitude is

[A]. 1, 4, 2, 3
[B]. 2, 4, 1, 3
[C]. 3, 2, 1, 4
[D]. 2, 3, 4, 1

Answer: Option B

Explanation:

No answer description available for this question.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.