সরাসরি ভিডিও কলে পরামর্শ নিন
Bissoy অ্যাপ এ
পরামর্শ দিয়ে $ টাকা $ উপার্জন করুন

হৃদ-ফুসফুস যন্ত্র (Heart-Lung Machine) কোন কাজে ব্যবহৃত হয়?

সঠিক উত্তর: হৃৎপিন্ডের বাইপাস সার্জারিতে

নাগরিকের তথ্য লাভের অধিকার – i. ব্যক্তিগত কাজে অস্বচ্ছতা তৈরি করতে পারেii. প্রশাসনিক কাজে স্বচ্ছতা আনতে পারেiii. রাষ্ট্রীয় কাজে স্বচ্ছতা আনতে পারেনিচের কোনটি সঠিক?

কোনটি তড়িৎ যন্ত্র (Electric Machine) তড়িৎ যন্ত্র নয়।

A machine P can print out one lakh books in 8 hours. Machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 A.M.While machine P is stopped at 11 A.M. and remaining two machines completed the work. Approximately at what at what time will the work time (to print one lakh books) be finished?

A small factory with 3 machines has a job of stamping out a number of pan covers. The newest machine can do the job is 3 days, another machine can do it in 4 days, and the third machine can do it in 6 days. How many days will the factory take to do the job using all the machine?

A machine P can paint one lakh books in 8 hours; machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines started operating at 9 A. M. while machine P is stopped at 11 A. M. and the reamaining two machines completed the work. Approximately at what time will the work (to print one lakh books) be finished?

Machine A has 60° phase spread and machine B has 120° phase spread. Both the machines have uniformly distributed winding. The ratio of distribution factors of machine A to machine B is ____________

An electric motor drives a machine through a speed reducing gear of ratio 9:1. The motor armature, with its shaft and gear wheel, has moment of inertia 0.6 kg-m2. The rotating part of the driven machine has moment of inertia 45 kg-m2. The driven machine has resisting torque of 100 N-m and the efficiency of reduction gear is 95%. Find the power which the motor must develop to drive the machine at a uniform speed of 160 r.p.m.

A machine P can print one lakh books in 8 hours, machine Q can print the same number of books in 10 hours while machine R can print them in 12 hours. All the machines are started at 9 A.M. while machine P is closed at 11 A.M. and the remaining two machines complete work. Approximately at what time will the work (to print one lakh books) be finished ?

S1: The similarity between the human body and a machine is rather superficial.
P: Beyond that, comparison fails.
Q: No machine grows in size; no machine sees, hears or feels.
R: It can be summed up in the statement that both require fuel and oxygen and obtain energy.
S: No machine thinks.
S6: The points of difference far outweigh the points of resemblance.

The Proper sequence should be:

ডিম থেকে বাচ্চা ফোটানোর জন্য কোন যন্ত্র ব্যবহৃত হয়?