Hi,
I am glad to share some more questions
asked in BARC OCES/DGFS recruitment interview for mechanical engineering
discipline in 2015. These questions were shared by my colleague.
1.
Draw the shear force and
bending moment diagrams for the following beam subjected to point load at the
mid span. (Ref fig.1)
2.
In the above problem, replace
the beam with a rope and draw the SFD & BMD. Which one will have more
strength and Why? (Ref fig.1)
3.
What is the required load ‘W’
to be applied in order to make θ zero degrees? (Ref fig. 2)
Fig. 2
4.
Two steel balls, one is of
volume V and the other is of volume 2V. Both contains same amount of sensible
thermal energy 2000J in them. Which will have more temperature?
5.
Two spherical bodies of same
diameter D, are connected by a string as shown in fig. 3. If the string is in
tension, can both be of same material? Determine the weights of the two bodies.
(Ref fig.3)
6.
For the bar shown in figure below,
assuming 1-D axial heat conduction and completely insulated boundaries around
and subjected to same temperature 1000 K at the ends at time t=0. If the
initial temperature of the bar is 300K, draw the temperature profile along the
length, at some typical instances for t>0. (Ref fig.4)
7.
There are two vessels, A and B,
having same diameter and containing water to the same level. But one vessel has
steel ball in it and they are heated from bottom at the same time. Draw the
approximate average water temperature variation in them with respect to time. Does
both require same amount of time to start boiling under same ambient pressure
conditions? If not, which one requires more time? (Ref fig.5)
8.
For a reversible Carnot engine,
find the relation between temperatures TH,
TC and heats QH, QC.
9.
Tell all the laws of
thermodynamics with application for each law.
10.
How can you find whether
scaling occurred on condenser tubes or not?
11.
Draw the temperature profiles
for shell side and tube side fluids for a typical condenser.
12.
What is the stress in the below
bar subjected to force P1 at one end and force P2 at other end? (Ref fig.6)
All the very Best.!!!
