Explanation:

লিন্টেল স্লাব -এ কংক্রিটের পরিামাণের শতকরা কত হার রড ধরা হয়? সঠিক উত্তর ১% থেকে ১.৫% দরজা,জানালার উপরস্থ লোডকে সাপোর্টের দুই পাশে ছড়িয়ে দেওয়ার জন্য স্বল্পতম দৈর্ঘ্যের বিমকে লিন্টেল বলে৷  লিন্টেলের ০.৭ - ১% রড ধরা হয়৷

Explanation:

মডুলাস অব ইলাসটিসিটি (E) এবং মডুলাস অব রিজিডিটি (C) এর মধ্যকার সম্পর্ক- সঠিক উত্তর C=mE/2(m+1) C = mE2(m + 1)C  =  modulus of rigidity M  =  module E  =  modulus of elasticity

Explanation:

কোনটি বয়লার মাউন্টিং? সঠিক উত্তর সেফটি ভালভ (b), (c) এগুলো হলো বয়লার এক্সেসোরিজ একটি বয়লার এ ৭টি মাউন্টিং থাকে - 1. Water level indicator; 2. Main steam stop valve; 3. Pressure gauge; 4. Fud cheek valve; 5. Fusible plug; 6. Blow down valve; 7. Safety valve.

Explanation:

ক্যাড প্রোগ্রামিংয়ে এনটিটিগুলো সুনিপুন পরিচালনা ও স্বকার্যে ব্যবহারের মাধমে অবজেক্ট তৈরিকরণ প্রক্রিয়াকে বলে- সঠিক উত্তর ম্যানিপুলেশন স্যানিপুলেশন (Detination given to the Question).

Explanation:

সেলফ স্ট্যাটিং সিস্টেমের মোটরটি হয়- সঠিক উত্তর শান্ট মোটর শান্ট মোটর এর সিস্টেম সেলফ স্ট্যাটিং।

Explanation:

L দৈর্ঘ্যবিশিষ্ট ৈএকটি ক্যান্টিলিভার বীমের উপর প্রতি একক দৈর্ঘ্য W লোড সমভাবে প্রয়োগ করা হলে সর্বোচ্চ বেল্ডিং মোমেন্ট হবে- সঠিক উত্তর WL2/2 R1 = WLMaxmbendingmomentM1 = WL2Bendingmomentatanydistance x,Wx.x2 = Wx22When x = L, BendingmomentismaxmW(L)22Mmax = WL22

Explanation:

ACI Code অনুসারে Column এর Minimum longitudinal reinforcement কত? সঠিক উত্তর ১% ACI Code অনুসারে Column এর longitudinal reinforcement এর মান ধরা হয় কলামের মোট আয়তনের ১% থেকে ৮% এরমধ্যে।

Explanation:

স্ট্রিম ইঞ্জিন নিম্নের সাইকেল অনুসারে কাজ করে থাকে- সঠিক উত্তর কারনট সাইকেল স্টিম ইঞ্জিন কারনট সাইকেল অনুসারে কাজ করে।

Explanation:

°C তাপমাত্রা 125 সেমি দীর্ঘ একটি দস্তার তাপমাত্রা 200°C এ উন্নীত করা হল। যদি দস্তার দৈর্ঘ্য প্রসারণ গুনাঙ্ক 0.000029//°C হয়, তবে এর দৈর্ঘ্য বৃদ্ধি পাবে- সঠিক উত্তর 0.725 সেমি দৈর্ঘ্য প্রসারণ সহগ, a = 12 - 1111(θ2 - θ1) = 12 - 1111∆θ = 1∆11∆θ∆1 = ?11 = 125cm∆θ = (200˚ - 0˚) = 200˚Ca = 0.000029/˚C∆1 = a11∆θ = 0.000029×125×200 = 0.725cm

Explanation:

ইঞ্জিনের কতটুকু পরিমান তাপ কাজে লাগানো হয়? সঠিক উত্তর ৪৫% তাপ ইঞ্জিন উৎপন্ন তাপকে মেকানিক্যাল এনার্জিতে রূপান্তর করে। সাধারণত তাপ ইঞ্জিন এর তাপকে কাজে পরিণত করার ক্ষমতা ৫০% এর নিচে। কারণ তাপ ইঞ্জিন এ পরিবেশে একটা বিপুল তাপ নষ্ট হয় ফলে কর্মদক্ষতা ৫০% এর নিচে চলে আসে। কর্মদক্ষতা, nth = WoutQin = প্রাপ্ত কাজ/প্রযুক্তি শক্তি So, ans is 45%

Explanation:

এক টন অব রেফ্রিজারেন্ট বলতে বোঝায় হিট রিসিভিং সার্মথ্য - সঠিক উত্তর 210 KJ/min 1 টন (2000 Ib) বিশুদ্ধ বরফকে 0° সে. তাপমাত্রায় 24 ঘণ্টায় গলাতে হিট ট্রান্সফার হারকে 1 টন রেফ্রিজারেন্ট বলে। ১ টন রেফ্রিজারেন্ট = 3.517 kjs  = 3.517×60 KJmin  =  211.02 KJmin  210 kjmin

Explanation:

প্রতি টন রেফ্রিজারেশন ক্ষমতা হলো- সঠিক উত্তর 3.5/COP Cop = coefficient of performance = Q/W = Amount of heat extracted in the refriginationAmount of work done Q = W × COP W = QCop = 1toncop = 3.5 kJ⁄scop = 3.5cop Q = Heat removed from the reservoir W = Heat supple to the cold reservoir on work required.

Explanation:

0.125 সেমি ব্যাসের ইস্পাতের তার দিয়ে নির্মিত একটি হেলিক্যাল স্প্রিং এর গড় ব্যাস 1.25 সে.মি তার স্প্রিং েইনডেক্স হবে- সঠিক উত্তর ১০ তারের ব্যাস, d = ০.১২৫ সে. মি. গড় ব্যাস, D = ১.২৫ সে. মি. স্প্রিং ইনডেস্ক, C = Dd = ১.২৫ ০.১২৫ = ১০

Explanation:

গিয়ারের টুতের শীর্ষদেশ হতে নিম্নদেশ পর্যন্ত রেডিয়াস দূরত্বকে বলা হয়? সঠিক উত্তর কার্যকরী গভীরতা দুটি সেটিং গিয়ারের অ্যাডেনডামদ্বয়ের যোগফল হলো কার্যকরী গভীরতা।

Explanation:

ভেপার কম্প্রেশন সিস্টেমে অ্যামিনিয়াকে কম্পেসড করার পরে তাপমাত্রা হয়- সঠিক উত্তর কোনোটিই নয় ভেপার কম্প্রেশন সিস্টেমে অ্যামোনিয়াকে কম্প্রেসড করার পরে তাপমাত্রা হয় 15° - 25°

Explanation:

Which tool could be used for detecting vulnerability through SQL Injection Correct Answer nmap SQL injection is a code injection technique, used to attack data driven applications, in which nefarious SQL statement are inserted into an entry field for execution. SQL injection must exploit a security vulnerability in an application’s software.

Explanation:

Which software is mostly used for virtualization? Correct Answer VMW are VMWare Inc, is a subsidiary of Dell Technologies, that provide cloud and virtualization software and services and claims to be the first to successfully virtualized the X86 architecture commercially. VMWare’s desktop software runs on MS Windows, Linux and Mac OSX etc.

Explanation:

গ্যান্ট চার্ট হতে পাওয়া যায়- সঠিক উত্তর উৎপাদনের সিডিউল সময়ের সাপেক্ষ কাজকে দেখানো হয় যে চার্টের মাধ্যমে তাকে গ্যান্ট চার্ট বলে। এতা সাধারণত প্রোজেন্ট ম্যানেজমেন্ট এ ব্যবহার করা হয়। এতাকে উৎপাদনের সিডিউল তৈরি করতেও ব্যবহার করা হয়।

Explanation:

Which of the following is the security equipment? Correct Answer Router Router is a networking device that forwards data packets between computer networks. Routers Perform the ‘traffic directing’ functions on the internet. A data packet is typically forwarded from one router to another through the networks that constitute the internetwork until it reaches its destination node. It works on OSI layer.

Explanation:

Which of the following data structure is non- linear type? Correct Answer None of the above In computer programming, a linear data structure is any data structure that must be traversed linearly. Examples of linear data structures include linked lists, stacks and queues.

Explanation:

The main threat of Cloud based provisioning is Correct Answer Virtulization Cloud computing is an internet based computing that provides shared computer processing resources and data to computer and other devices on demand. The main threat of cloud computing is virtualization.

Explanation:

To divide a class C network into a maximum of 14 subnets ____each caple of having up to 14 hosts, the subnet mask used should be: Correct Answer 255.255.255.0 Subnetting is very important because by creating smaller IP networks. We can obtain better security, smaller collision & broadcast domains & greater administrative control of each network.

Explanation:

Which of the folowing data structures are indexed structures/ Correct Answer linear arrays An array is a collection, mainly of similar data types, stored into a common variable. The collection forms a data structure where objects are stored linearly, one after another in memory. The structure can also be defined as a particular method of storing elements of indexed data. Elements of data are logically stored sequentially in blocks within the array. Each element is referenced by an index.

Explanation:

Which one is modern light weight massage exchange format? Correct Answer JSON JSON (JavaScript Object Notation) is a lightweight data interchange format. It is easy humans to read and write. It is easy for machine to parse and generate. It is based on a subset. JavaScript programming Language, standard ECMA - 262 3rd Edition - December 1999. JSON text format that is completely language independent but uses conventions that are familiar programmers of the C - family of languages, including C, C + + , C#, Java, JavaScript, Perl, Python.

Explanation:

In which model prototype can be developed? Correct Answer Evlution model Software prototype is the activity of creating prototypes of software applications i.e incomplete versions of the software program being developed. Example of prototype model are Horizontal prototype, vertical prototype, throwaway prototype, evolutionary prototype, incremental prototype, extreme prototype etc.

Explanation:

The time communicate between Bangladesh and USA is the same as that to communicate between two adjacent houses mask used should be: Correct Answer Fiber optic A satellite is an artificial object which has been intentionally placed into orbit. Such satellite are sometimes called artificial satellites to distinguish them from natural satellite such as Earth’s moon.

Explanation:

A host machine is unable to communication with Google server. Which command is the most appropriate to run at host machine to determine which intermediary device is responsible for this failure ? Correct Answer ping 192.168.1.1 Ping is useful for determining whether a host is up and running on the network. Tracert is another command line utility built into Windows and most other computer systems. The File Transfer Protocol (FTP) was designed for an environment where clients and servers interact with each other with a minimum of restriction.

Explanation:

ALU stores the computed result immediately in Correct Answer Accumulator In a computer’s central processing unit (CPU), an accumulator is a register in which intermediate arithmetic & logic results are stored.

Explanation:

Which of the following is not tool for remote access for maintenance Correct Answer Apache In broad terms, remote access refers to workers being able to access data of resources from a remote location. Example of remote access tools are: tm viewer, Log Meln, Remote Desktop, Ammyy Admin, Ultra VNC, Aero Admin Remote PC etc.

Explanation:

E-mail is a protocol of the following layer___ Correct Answer Application layer An application layer is an abstraction layer that specifics the shared protocols and interface methods used by hosts in communication network. The application layer abstraction is used in both for Internet Protocol suite (TCP/IP) & OSI model.

Explanation:

Which protocol is used for secured web browing Correct Answer http HTTPs stands for hyper Text Transfer Protocol secure. To make sense of this cryptic name, let’s break it up into its components. A similar extension called use HTTPs options is available for chrome. Presently it only supports Twitter & Facebook.

Explanation:

Which of the following is a project scheduling method that can be applied to software development/ Correct Answer both a and b Program Evolution & Review technique (PERT) and Critical Path Method (CPM) are two popular statistical tools used by the business entities for the management of the project. Basically CPM & PERT are project management techniques, which have been created out of the need of western industrial & military establishments to plan, schedule and control complex projects.

Explanation:

The command password issued without an argument with change the password of- Correct Answer Currecnt user A password is a word or string of characters used for user authentication to prove identity of access approval to gain access to a resource which is to be kept secret from those not allowed access.

Explanation:

An acronym for conference of Data systems language is _____ Correct Answer CODDASYL CODASYL is an acronym for “Conference/Committee on Data Systems Languages”. CODASYL’s members were individuals from industry and government involved in data processing activity. Its larger goal was to promote more effective data systems analysis, design and implementation.

Explanation:

The step by step instructions that solve a problem are called. Correct Answer An algorithm An algorithm is a set of instructions designed to perform a specific task. In mathematics and computer science, an algorithm usually means a small procedure that solves a recurrent problem.

Explanation:

Which of the following programming helps you to learn Androied programming Correct Answer Java Android is the world’s most - installed mobile OS, running devices as different as phones, tables, watches and TVs. By developing for android, you can create apps for all these devices. But before you start coding Android Apps, you will have to learn Java.

Explanation:

According to Boolean algebra the value of (A+AB).(B+AB) is Correct Answer AB (A + AB).(A + AB) = A(1 + B). B (1 + A) = A1.B1 [∴ 1 + B = 1, 1 = A = 1] = AB

Explanation:

Which O/OS is recommended for real time systems? Correct Answer Windows A real - time operating system (RTOS) is an operating system (OS) intended to serve real - time applications which process data as it comes in, typically without buffering delays.

Explanation:

Which of the following requires the most time in SDLC Correct Answer Designer The Software Development Life Cycle (SDLC) also referred to as the application development life - cycle, is a term used in systems engineering, information systems and software engineering to describe a process for planning, creating, testing and deploying an information system.

Explanation:

Generally what type of OS is chosen where security concern is a great issue? Correct Answer Windows Server 2000 Windows 2000 is an operating system for use on both client and server computers. The Windows 2000 Professional operating system uses the NTFS Standard for its file system. If users want to block other users from seeing the file, Windows 2000 Professional allows them to password - protect the folder.

Explanation:

Test case is written by Correct Answer Developer A test case is a document, which has a set of test data, preconditions, expected results and post conditions, developed by developer for a particular test scenario in order to verify compliance against a specific requirement.

Explanation:

The SQL statement that queries or reads data from a table is____ Correct Answer Select The SQL Select statement returns a result set of records from one or more tables. Select is the most commonly used data manipulation language (DML) command.

Explanation:

An algorithm that calls itself directly is known as- Correct Answer Recursion Recursion is computer science is a method where the solutions to a problem depends on solutions to smaller instances of the same problem.

Explanation:

Two dimensinal arrays are also called Correct Answer both a and b 2 - D arrays, provide most of this capability. Like a ID array, a 2D array is a collection of data cells, all of the same type, which can be given a single name. 2D array are tables array and matrix array.

Explanation:

The smallest element of an array's index is called its Correct Answer Lower bound Array indexing refers to any use of the square brackets()to index array values. The smallest element of on array’s index is called its lower bound.

Explanation:

Two main meanures for the efficiency of an algorithm are Correct Answer Time and space Algorithm is the collection of steps to solve a problem. The two main measures for the efficiency of an algorithm are time and space.