Related Questions

'International Institute on Ageing' কোথায় প্রতিষ্ঠিত হয়েছে?
A জেনেভা
B রোম
C প্যারিস
D ভ্যালেটা
International Institute on Ageing কোথায় অবস্থিত?
A জেনেভা
B রোম
C প্যারিস
D ভ্যালেটা
According to the "wear -and- tear theory", ageing takes place due to ____ .
A biological and social consequences
B psychological and biological consequences
C psychological and social consequences
D biological , mental and social consequences
Polyethylene has very poor dielectric and ageing properties.
A Yes
B No
Ageing of a selenium rectifier may change the output voltage by
A 5 to 10 per cent
B 15 to 20 per cent
C 25 to 30 per cent
D none of the above
The phenomenon of strain-ageing is generally experienced with
A Cast iron
B Low carbon steel
C High manganese steel
D High carbon steel
Study of process of ageing
A Genocology
B Geronotology
C Ontogeny
D None of these
During ageing of fluid carrying pipes, the
A Pipe becomes smoother with use
B Friction factor increases linearly with time
C Absolute roughness decreases with time
D Absolute roughness increases linearly with time
A steel mill produces 180 tons of steel per month Raw materials cost for each ton of production is Tk. 1200. Other expenses of that mill are Tk. 90,000 in each month what should be the selling price of each ton of steel in order to make 10% profit?
A 1870
B 1845
C 1842
D 18145
10 cm লম্বা ও 0.5 cm ব্যাসার্ধ বিশিষ্ট একটি তামা ও একটি লোহার তারকে জোড়া লাগিয়ে দৈর্ঘ্য 20 cm করা হল। জোড়া লাগানো তারটিকে বল প্রয়োগ করে লম্বা করা হল। লোহার ইয়ংয়ের গুণাঙ্ক তামার ইয়ংয়ের গুণাঙ্কের দুইগুণ হলে লোহার দৈর্ঘ্য বৃদ্ধি ও তামার দৈর্ঘ্য বৃদ্ধির অনুপাত কত? ( A steel and a brass wire, both having 10 cm length and 0.5 cm radius, are joined together making the total length of the combined wire 20 cm. The combined wire is stretched by applying a force. If the Young's modulus of steel is twice as much as that of brass, what will be the ratio of the extension of steel to the extension of brass?)
A 1 :8
B 1 : 6
C 1 : 4
D 1 : 2

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