Q1.The threaded bolts A and B of same material and length are subjected to identical tensile load. If the elastic strain energy stored in bolt A is 4 times that of the bolt B and the mean diameter of bolt A is 12mm, the mean diameter of bolt B in mm is
Q2.For steady, fully developed flow inside a straight pipe of diameter D, neglecting gravity effects, the pressure drop over a length L and the wall shear stress are related by
Q4.The pressure, dry bulb temperature, and relative humidity of air in a room are1bar, 30ºC and 70% respectively. If the saturated steam pressure at 30ºC is 4.25kPa, the specific humidity of the room air in kg water vapour / kg dry air is
Q6.In simple exponential smoothing forecasting, to give higher weightage to recent demand information, the smoothing constant must be close to
Answer : Option DExplaination / Solution:
Value of α close to one have less of a smoothing effect and give greater weight to recent changes in the data.
Q7.A metric thread of pitch 2mm and thread angle 60º is inspected for its pitchdiameter using 3-wire method. The diameter of the best size wire in mm is
Answer : Option CExplaination / Solution:
For 60º thread angle, best wire size =0.57135xP=1.154
Q8.A steel bar 200 mm in diameter is turned at a feed of 0.25 mm/rev with a depth of cut of 4 mm. The rotational speed of the workpiece is 160 rpm. The material removal rate in mm3/ s is
Answer : Option DExplaination / Solution:
f × d × v
Q10.After several defeats in wars, Robert Bruce went in exile and wanted to commit
suicide. Just before committing suicide, he came across a spider attempting
tirelessly to have its net. Time and again the spider failed but that did not deter it
to refrain from making attempts. Such attempts by the spider made Bruce
curious. Thus, Bruce started observing the near-impossible goal of the spider to
have the net. Ultimately, the spider succeeded in having its net despite several
failures. Such act of the spider encouraged Bruce not to commit suicide. And
then, Bruce went back again and won many a battle, and the rest is history.
Which one of the following assertions is best supported by the above information?
Answer : Option DExplaination / Solution: No Explaination.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0