Is A 100 × 100 × 100 mm of c/s area 1408 mm2 is welded along A and B such that the lengths of the weld along A and B are I1 and I2 respectively which of the following is a possibly acceptable combination of I1 and I2.
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Solution
Since C.G. of any k is close to B,
length of weld l2 should be more than l1.
For a plane trass shown in the figure,the number of zero fore members for the given loading is:
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Solution
Principle :If at any joint, there are 3 forces of which 2 are in same line, then the third force is zero.
There are 8 members.
A bracket connection is made with four bolts of 10 mm diameter and supports a load of 102 kN with an eccentricity of 100 mm. The max force resisted by any bolt will be (in kN) ___________.
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Solution
Two beans one having square cross section and other circular cross section one subjected to same a amount of bending moment. If the cross section areas as well as the material of both the beams are the same then:
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Solution
For given area,section modulus of circular cross section is less.
The mass stress induced in a steel wire of modulus of elasticity 200 km/mm2 and diameter 1 mm when bound on a drum of diameter 1m is approx equal to ________ .
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Solution
The stress-stain diagram for two materials A and B is shown below.
The full. statements are based on this diagram:
(I)Material A is more brittle.
(II)Ultimate strength of material B is more than A.
with reference to above statement which of the following applies:
Coefficient of thermal expansion of structural steel is about
A 15 cm diameter pipe is joined to a 30 cm diameter pipe by a reducing flange. For water flowing at a rate of 0.115 m3/S1 the head loss when water flows fun the smaller to larger diameter pipe is ________ .
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Solution
The determinant of the matrix \(\begin{bmatrix} 1 & 3&2 \\ 0 &5 &-6 \\ 0 &2 &8 \end{bmatrix}\) is 26. Then the determinant of matrix \(\begin{bmatrix} 2& 7& 8 \\ 0&5 & -6\\ 1&3 &2 \end{bmatrix}\) is ________ .
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Solution
Only 2 rows in the determinant is interchanged. By property, the determinant remain same with opposite sign.
The differential equation
\(\left [ 1+\left ( \frac{dy}{dx} \right )^{2} \right ]^{3}=C^{2}\left [ \frac{d^{2}y}{dx^{2}} \right ]^{2}\) is of-
Solution
Order: 2; Degree = 2