All Courses
Get the App Signup / Login
Sign in Open App
Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Topicwise Question Bank for Mechanical Engineering  >  Test: Joining Processes - 3 - Mechanical Engineering MCQ

Test: Joining Processes - 3 - Mechanical Engineering MCQ


Test Description

30 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering - Test: Joining Processes - 3

Test: Joining Processes - 3 for Mechanical Engineering 2024 is part of Topicwise Question Bank for Mechanical Engineering preparation. The Test: Joining Processes - 3 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Joining Processes - 3 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Joining Processes - 3 below.
Solutions of Test: Joining Processes - 3 questions in English are available as part of our Topicwise Question Bank for Mechanical Engineering for Mechanical Engineering & Test: Joining Processes - 3 solutions in Hindi for Topicwise Question Bank for Mechanical Engineering course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt Test: Joining Processes - 3 | 30 questions in 90 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study Topicwise Question Bank for Mechanical Engineering for Mechanical Engineering Exam | Download free PDF with solutions
Test: Joining Processes - 3 - Question 1
Save

A shielded metal arc welding operation takes place on a steel workpiece (with a steel electrode) with a 20 V power supply. If a weld with a triangular cross-section with a 10 mm leg length is to be produced, estimate the current needed for a welding speed of 10 mm/s. Use an efficiency of 80% and specific energy as 10.3 J/mm2

Detailed Solution for Test: Joining Processes - 3 - Question 1


Heat input in arc welding 


H = u(volume) = uAl
where u is specified energy
∴ welding speed,

Test: Joining Processes - 3 - Question 2
Save

Match the List-I (Welding processes) with List-II (Description):
List-I
A. Plasma arc welding
B. MIG welding
C. TIG welding
D. Electroslag welding
List-II
1. Arc is produced between a non-consumable electrode and the workpiece.
2. Is very much useful for joining thick materials?
3. Gives high heat concentration resulting in higher welding speeds.
4. Uses consumable electrodes.
Codes:
     A  B  C  D
(a) 4  3  1  2
(b) 3  2  1  4
(c) 3  4  1  2
(d) 2  4  1 3

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Joining Processes - 3 - Question 3
Save

Match the List-I (Filler rod materials) with List-ll (Joining processes):
List-I   
A. Mild steel    
B. Bronze    
C. Brass    
D. Lead and tin alloy
List-ll
1. MIG welding
2. Soldering
3. Brazing
4. Thermit welding
5. Braze welding
Codes:
      A  B  C   D
(a)  1  5   3   2
(b)  4  3   2   5
(c)  4  3   5   2
(d)  1  3   5   4

Test: Joining Processes - 3 - Question 4
Save

Electron beam welding can be carried out in
Test: Joining Processes - 3 - Question 5
Save

Match the List-I (Welding processes) with List-II (Features):
List-I
A. Ultrasonic welding
B. Electron beam welding
C. Plasma arc welding
D. Stud welding
List-II
1. Gas heated to ionized condition for conduction of electric current
2. High frequency and high intensity vibrations
3. Requires vacuum
4. Exothermic chemical reaction
5. Ceramic ferrule Codes:
     A B C D
(a) 1 2 4  5
(b) 4 3 1  2
(c) 2 1 4  3
(d) 2 3 1  5
Test: Joining Processes - 3 - Question 6
Save

The major difficulty during welding of aluminium is due to its
Test: Joining Processes - 3 - Question 7
Save

Consider the following statements:
1. The electrode is non consumable.
2. Both DC and AC power supplies can be used.
3. Fluxes are required for thinner sections.
Q. Which of the above statements is/are correct for TIG welding?
Test: Joining Processes - 3 - Question 8
Save

Which one of the following is not a fusion welding process?
Detailed Solution for Test: Joining Processes - 3 - Question 8

Gas welding, arc welding and resistance welding are the fusion welding process while brazing is allied process in which parent metal is not heated up to molten state.

Test: Joining Processes - 3 - Question 9
Save

Which of the following welding techniques uses a non-consumable electrode?​
Detailed Solution for Test: Joining Processes - 3 - Question 9

TIG welding uses tungsten electrode which is non-consumable.

Test: Joining Processes - 3 - Question 10
Save

In arc welding arc is created between the electrode and work by
Test: Joining Processes - 3 - Question 11
Save

Preheating of work piece is essential in welding
Detailed Solution for Test: Joining Processes - 3 - Question 11

Preheating is often employed when welding cast iron, high carbon steel or alloy steel since preheating slows down the cooling rate of that area of parent metal close to the weld itself and the weld itself and thereby prevents the formation of martensite which accounts for hardness across the weld. The chance of cracking in the heat- affected zone due to unequal contraction during cooling is also minimized by preheating.

Test: Joining Processes - 3 - Question 12
Save

Consider the following statements:
MIG welding process uses
1. Consumable electrode
2. Nonconsumable electrode
3. D.C. power supply
4. A.C. power supply
Q. Which of these statement are correct?
Detailed Solution for Test: Joining Processes - 3 - Question 12

Metal inert gas arc welding or more appropriately called as gas metal arc welding utilizes a consumable electrode. Normally DC arc welding machines are used for MIG with electrode positive.

Test: Joining Processes - 3 - Question 13
Save

Grey cast iron is usually welded by
Test: Joining Processes - 3 - Question 14
Save

Arc blow is more common in
Test: Joining Processes - 3 - Question 15
Save

The phenomenon of weld decay occurs in
Test: Joining Processes - 3 - Question 16
Save

High speed electron beam of electron beam welding is focused on the weld spot using
Detailed Solution for Test: Joining Processes - 3 - Question 16

Electromagnetic focusing lens are used to creat magnetic field and due to this electron converge into beam.

Test: Joining Processes - 3 - Question 17
Save

Which one of the following welding processes consists of minimum heat affected zone
Detailed Solution for Test: Joining Processes - 3 - Question 17

Minimum heat affected zone is obtained by laser beam walding and then electron beam welding.

Test: Joining Processes - 3 - Question 18
Save

Following gases are used in TIG welding
Detailed Solution for Test: Joining Processes - 3 - Question 18

The shielding gases most commonly used are argon, helium, carbon dioxide and mixture of them.

Test: Joining Processes - 3 - Question 19
Save

In arc welding process the intense heat is developed between the work and the electrode largely due to
Test: Joining Processes - 3 - Question 20
Save

Lap joints are employed on plates having thickness
Test: Joining Processes - 3 - Question 21
Save

Seam welding is a
Detailed Solution for Test: Joining Processes - 3 - Question 21

In seam welding electrodes used in the form ol rollers or wheels, and leak proof joint is obtained bv this.

Test: Joining Processes - 3 - Question 22
Save

Which one of the following is not an electric resistance method of welding
Detailed Solution for Test: Joining Processes - 3 - Question 22

Electroslag welding is a type of arc welding.

Test: Joining Processes - 3 - Question 23
Save

The maximum heat in resistance welding is at the
Detailed Solution for Test: Joining Processes - 3 - Question 23

Since the resistance is maximum at the interference of the two sheets being joined hence maximum heat will generate at the same place.

Test: Joining Processes - 3 - Question 24
Save

Preheating before welding is done to
Test: Joining Processes - 3 - Question 25
Save

In shielded arc welding
Detailed Solution for Test: Joining Processes - 3 - Question 25

Shielded metal arc welding is most extensively used manual welding process which is done with coated electrode. The coating is known as flux.

Test: Joining Processes - 3 - Question 26
Save

In which of the following welding techniques in vacuum environment required
Detailed Solution for Test: Joining Processes - 3 - Question 26

In electron beam welding, vacuum is required in order to conserve the kinetic energy of electron beam before hitting the workpiece.

Test: Joining Processes - 3 - Question 27
Save

Pinch effect in welding is the result of
Detailed Solution for Test: Joining Processes - 3 - Question 27

Since electrode can be considered as large number of parallel conductors and when current flows in the same direction an attractive force will develope this is known as pinch force. Since this is a electromagnetic force hence it is also called electromagnetic pinch force.

Test: Joining Processes - 3 - Question 28
Save

Projection welding is
Test: Joining Processes - 3 - Question 29
Save

The temperature of plasma torch is of the order is
Detailed Solution for Test: Joining Processes - 3 - Question 29

The temperature of plasma torch is around 33000°C.

Test: Joining Processes - 3 - Question 30
Save

Oxyacetylene flame cuts metal by its
45 videos|314 tests
Join Course
Information about Test: Joining Processes - 3 Page
In this test you can find the Exam questions for Test: Joining Processes - 3 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Joining Processes - 3, EduRev gives you an ample number of Online tests for practice

Top Courses for Mechanical Engineering

Download as PDF

Top Courses for Mechanical Engineering

Important Questions for Joining Processes - 3

Find all the important questions for Joining Processes - 3 at EduRev.Get fully prepared for Joining Processes - 3 with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the Joining Processes - 3 syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of Joining Processes - 3 resources.

Joining Processes - 3 MCQs with Answers

Prepare for the Joining Processes - 3 within the Mechanical Engineering exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for Joining Processes - 3 Topicwise Question Bank for Mechanical Engineering

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace Joining Processes - 3 with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup