Related Questions

A tank is fitted with 8 pipes, some of them that fill the tank and others that are waste pipe meant to those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full, it will take exactly 6 hours for the tank to empty. How many of these are these are fill pipes?
A 2
B 4
C 6
D 5
As compared to cast iron pipes, steel pipes are
A Heavier
B Stronger
C Costlier
D Less susceptible to corrosion
Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal
A Tensile strength
B Compressive strength
C Young's modulus
D Thermal co-efficient of expansion
A jet engine turbine blade is normally manufactured by
A forging
B shell moulding
C investment casting
D pressure die casting
Stoneware pipes used for sewers for carrying sewage normally is joined by __________ joint.
A Spigot and socket
B Flanged iron
C Collar
D Expansion
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
The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.
A Equal to
B Less than
C More than
D None of these
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
Conduit pipes are normally used to protect ________ cables.
A Unsheathed cables
B Armoured
C PVC sheathed cables
D All of the above

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