1
GATE ME 1987
MCQ (Single Correct Answer)
+2
-0.6
In the case of turbulent flow of a fluid through a circular tube (as compared to the case of laminar flow at the same flow rate) the maximum velocity is ...................., shear stress at the wall is ................................., and the pressure drop across a given length is ____________. The correct words for the bllanks are, respectively:
A
higher, higher, higher
B
higher, lower, lower
C
lower, higher, higher
D
lower, higher, lower
2
GATE ME 1987
MCQ (Single Correct Answer)
+1
-0.3
A streamlined body is defined as a body about which
A
The flow is laminar
B
The flow is along the streamlines
C
The flow separation is suppressed
D
The drag is zero
3
GATE ME 1987
MCQ (Single Correct Answer)
+2
-0.6
A ductile material having an endurance limit of $$196$$ $$N/m{m^2}$$ and the yield point at $$294$$ $$N/m{m^2}$$ is stressed under variable load. The maximum and minimum stresses are $$147$$$$N/m{m^2}$$ and $$49$$$$N/m{m^2}$$. The fatigue stress concentration factor is $$1.32.$$ The available factor of safety for this loading is
A
$$3.0$$
B
$$1.5$$
C
$$1.33$$
D
$$4.0$$
4
GATE ME 1987
MCQ (Single Correct Answer)
+1
-0.3
Weldments in fabricated steel beams are designed for
A
bending stresses at the flange
B
shear stresses in transverse plane
C
combination of bending and shear
D
none of these because in fabricated beams welds do not get stressed.
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