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কাগজের ভার হিসাবে ব্যবহৃত একটি পুরু কাচ (প্রতিসরাঙ্ক 1.5) খন্ডের উপর থেকে খাড়া নীচের দিকে তাকালে কাগজের উপর একটি দাগ কাচের উপর প্রান্ত থেকে 6 cm নীচে দেখা যায়। কাচ খন্ডতির পুরুত্ব কত? (When you look downward from the top of a thick glass (refractive index 1.5) slab used as a paper weight, a mark on the paper is seen 6 cm below from the top of the slab. What is the thickness of the glass slab?)
A 4 cm
B 6 cm
C 9 cm
D 12 cm
কাগজের ভার হিসাবে ব্যবহৃত একটি পুরু কাচ (প্রতিসরাঙ্ক 1.5) খণ্ডের উপর থেকে খাড়া নীচের দিকে তাকালে কাগজের উপর একটি দাগ কাচের উপর প্রান্ত থেকে 6 cm নীচে দেখা যায়। কাচ খন্ডটির পুরুত্ব কত? (When you look downward from the top of a thick glass (refractive index 1.5) slab used as a paper weight, a mark on the paper is seen 6 cm below from the top of the slab. What is the thickness of the glass slab?)
A 4 cm
B 6 cm
C 9 cm
D 12 cm
If the maximum bending moment of a simply supported slab is M Kg.cm, the effective depth of the slab is (where Q is M.R. factor)
A $$\frac{{\text{M}}}{{100{\text{Q}}}}$$
B $$\frac{{\text{M}}}{{10\sqrt {\text{Q}} }}$$
C $$\sqrt {\frac{{\text{M}}}{{\text{Q}}}} $$
D $$\sqrt {\frac{{\text{M}}}{{100{\text{Q}}}}} $$
If the main reinforcement of the slab is parallel to a T-beam, the transverse reinforcement at mid span of the slab is provided at least __________ of main reinforcement.
A 40%
B 50%
C 60%
D 70%
An R.C.C. roof slab is designed as a two way slab if
A It supports live loads in both directions
B The ratio of spans in two directions is less than 2
C The slab is continuous over two supports
D The slab is discontinuous at edges
If ‘W’ is the load on a circular slab of radius ‘R’, the maximum radial moment at the centre of the slab, is
A $$\frac{{{\text{W}}{{\text{R}}^2}}}{{16}}$$
B $$\frac{{2{\text{W}}{{\text{R}}^2}}}{{16}}$$
C $$\frac{{3{\text{W}}{{\text{R}}^2}}}{{16}}$$
D $$\frac{{5{\text{W}}{{\text{R}}^2}}}{{16}}$$
If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is
A $$\frac{{{\text{W}}{{\text{R}}^2}}}{{16}}$$
B $$\frac{{2{\text{W}}{{\text{R}}^2}}}{{16}}$$
C $$\frac{{3{\text{W}}{{\text{R}}^2}}}{{16}}$$
D Zero
The effective width of a column strip of a flat slab, is
A One-fourth the width of the panel
B Half the width of the panel
C Radius of the column
D Diameter of the column
If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than
A $$\frac{{{\text{WL}}}}{{12}}{\left( {{\text{L}} - \frac{{2{\text{D}}}}{3}} \right)^2}$$
B $$\frac{{{\text{WL}}}}{{10}}{\left( {{\text{L}} + \frac{{2{\text{D}}}}{3}} \right)^2}$$
C $$\frac{{{\text{WL}}}}{{10}}{\left( {{\text{L}} - \frac{{2{\text{D}}}}{3}} \right)^2}$$
D $$\frac{{{\text{WL}}}}{{12}}{\left( {{\text{L}} - \frac{{\text{D}}}{3}} \right)^2}$$
Thickened part of a flat slab over its supporting column, is technically known as
A Drop panel
B Capital
C Column head
D None of these

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