Related Questions

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
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 ইয়ংকের গুণাস্ক তামার ইয়ংকের গুণাস্কের দুইগুন হলে লোহার দৈর্ঘ্য বৃধি 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
Cartridge filters are termed as 'edge' filters, because of the fact that the
A Disks have very sharp edge
B Solids are not deposited at the edge of the disk
C Bulk of the solids are removed at the periphery of the disks
D None of these
What are the main components of Brass Alloy?
A Copper and Zinc
B Copper and Strontium
C Copper, Zinc and Nickel
D Copper and Nickel
Brass gets discoloured in air because of the presence of which of the following gases in air?
A Oxygen
B Hydrogen Sulphide
C Carbon dioxide
D Nitrogen
The brass and bronze are welded by _________ flame.
A Neutral
B Oxidizing
C Carburising
D All of these
Brass is an alloy of
A Copper and zinc
B Copper and tin
C Copper, tin and zinc
D None of these
In drilling brass, a drill with
A Zero helix angle is used
B Low helix angle is used
C High helix angle is used
D Any helix angle can be used
A composite beam is composed of two equal strips one of brass and other of steel. If the temperature is raised
A Steel experiences tensile force
B Brass experiences compressive force
C Composite beam gets subjected to a couple
D All the above
Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than
A 5
B 10
C 20
D 35

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