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The force in EC of the truss shown in the given figure, is
5t tension
4t tension
None of these.
Zero
5t compression
The tangential component of stress on an plane inclined θ° to the direction of the force, may be obtained by multiplying the normal stress by
cos θ
sin θ
sin²θ
tan θ
sin θ cos θ
In the truss shown in given figure the force in member DC is
indeterminate
100 t tensile
Zero
100 t compressive
The general expression for the
B.M. of a beam of length l is the beam carries
a load varying linearly from zero at one end to w at the other end
an isolated load at mid span
a uniformly distributed load w/unit length
None of these.
Maximum shear stress theory for the failure of a material at the elastic limit, is known
Haig's theory
Guest's or Trecas' theory
Von Mises's theory.
St. Venant's theory
Rankine's theory
Beams composed of more than one material, rigidly connected together so as to behave as one piece, are known as
Indeterminate beams
Composite beams.
Determinate beams
Compound beams
Slenderness ratio of a long column, is
length of column divided by least radius of gyration.
area of cross-section divided by radius of gyration
radius of gyration divided by area of cross-section
area of cross-section divided by least radius of gyration
If a solid shaft
(diameter 20 cm, length 400 cm, N = 0.8 x 105 N/mm2) when subjected to a twisting moment, produces maximum shear stress of 50 N/mm2, the angle of twist in radians, is
0.002
0.005
0.003
0.001
0.0025
A shaft rotating N.R.M. under a torque T, transmits a power
Newton metres/min
Newton metres/sec
The forces in the members of simple trusses, may be analysed by
method of sections
graphical method
method of joints
All the above.
The horizontal thrust on the ends of a two hinged semicircular arch of radius R carrying
All the above.
a uniformly distributed load ω per unit run over its right half span, is
a uniformly distributed load ω per unit run over its entire span is
The S.F. diagram of a loaded beam shown in the given figure is that of
a cantilever with an isolated load at the free end
a simply supported beam with uniformly distributed load
a simply supported beam with isolated central load
a cantilever with a uniformly distributed load.
To determine the force in BD of the truss shown in the given figure a section is passed through BD, CD and CE, and the moments are taken about
B joint
C joint
D joint.
A joint
A truss containing j joints and m members, will be a simple truss if
j = 3m - 2
j = 2m - 3
m = 2j - 3
m = 3j - 2
A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm2), 4 mm indiameter.
The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is
40 N
25 N
30 N
35 N
A composite beam is composed of two equal strips one of brass and other ofsteel.
If the temperature is raised
brass experiences compressive force
All the above.
composite beam bends
steel experiences tensile force
composite beam gets subjected to a couple
A steel bar 20 mm in diameter simply-supported at its ends over a total span of 40 cm carries a load at itscentre.
If the maximum stress induced in the bar is limited to N/mm2, the bending strain energy stored in the bar, is
611 Nmm
411 N mm
511 N mm
711 N mm
A body is said to be in equilibrium if
it moves horizontally
it rotates about its C.G.
it moves vertically
None of these.
Flat spiral springs
consist of uniform thin strips
All the above.
are supported at outer end
are wound by applying a torque
are used in clock-work mechanism
is the equation for Euler's crippling load if
one end is fixed and other end is free
both the ends are hinged
both the ends are fixed
one end is fixed and other end is hinged.
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