Related Questions

A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will
A Remain horizontal
B Slant up towards direction of pull
C Slant down towards direction of pull
D None of the above
Read the following passage carefully and then choose the right word to complete the sentence that follows. Rockets are very expensive as it can be used only once. Appled scientists have therefore develped a reusable space craft called a space shuttle which takes off like a rocket; however, does no get destroyed as it returns to earth. It can also be used to lunch satellired into space, retrieve them from space if any repairing os required and allow around 8 scientists to crryout experiments in space. The space shuttle does not get.
A flattened
B enlarged
C ruined
D developed
The voussoir placed at crown of an arch, is known as a
A Key
B Soffit
C Springer
D Haunch
The lower half portion between crown and skew back of the arch, is called
A Spandril
B Haunch
C Springing
D Soffit
The type of arch generally constructed over a wooden lintel or over a flat arch for the purpose of carrying the load of the wall above is
A Segmental arch
B Pointed arch
C Relieving arch
D Flat arch
For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.
A Binary mixture is represented by the apex
B Binary mixture is represented by any point inside
C Ternery mixture is represented by the sides
D Pure component is represented by the apex
The vertical distance between the springing line and highest point of the inner curve of an arch is known as
A Intrados
B Rise
C Spandril
D Extrados
The horizontal thrust on the ends of a two hinged semicircular arch of radius ‘R’ carrying
A A uniformly distributed load $$\omega $$ per unit run over its right half span, is $$\frac{2}{3}\frac{{\omega {\text{R}}}}{\pi }$$
B A uniformly distributed load $$\omega $$ per unit run over its entire span is $$\frac{4}{3}\frac{{\omega {\text{R}}}}{\pi }$$
C A distributed load varying from zero at the left end to $$\omega $$ per unit horizontal run at the right end, is $$\frac{2}{3}\frac{{\omega {\text{R}}}}{\pi }$$
D All the above
For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust
A Is increased
B Is decreased
C Remains unchanged
D Becomes zero
For a symmetrical two hinged parabolic arch, if one of the supports settles horizontally, then the horizontal thrust
A Is increased
B Is decreased
C Remains unchanged
D Becomes zero

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