Joining Processes - 2


10 Questions MCQ Test Topicwise Question Bank for GATE Mechanical Engineering | Joining Processes - 2


Description
This mock test of Joining Processes - 2 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 10 Multiple Choice Questions for Mechanical Engineering Joining Processes - 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Joining Processes - 2 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Joining Processes - 2 exercise for a better result in the exam. You can find other Joining Processes - 2 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

The main constituents of soldering alloy are

Solution:

The solder used for the soldering operation may be
1. a soft solder which is an alloy of lead and tin in varying proportions.
2. a hard solder which is copper-zinc alloy, copper-silver alloy or a nickel-silver alloy.

QUESTION: 2

An alloy of copper, zinc and silver often used in fabrication work is called

Solution:
QUESTION: 3

Flux is used in soldering to

Solution:

The action of flux in soldering joints is
(i) to break and remove the oxide layer formed along the joined faces.
(ii) to aid the capillarity of the molten metal and facilitate its flow around and through the joint.
(iii) to act as cleansing agent for the removal of dirt etc.

QUESTION: 4

The process of joining metallic pieces by introducing non-ferrous alloys in the liquid state between the metallic piece and allowing to solidify is known as

Solution:
QUESTION: 5

A brazed joint can be satisfactorily made on an article made of

Solution:
QUESTION: 6

The commonly used flux for brazing is

Solution:
QUESTION: 7

Which of the following welding process is also known as upset welding?

Solution:


End to end welding pressure is applied axially for hot upsetting process.

QUESTION: 8

Assume that the two 2 mm thick steel sheets are being sport welded at a current of 5500 A and current-flow time t= 0.15s. Using electrodes 6 mm in diameter, estimate the amount of heat generated in resistance spot welding.
(Take Rc = 250 μΩ)

Solution:

QUESTION: 9

Porosity in welds may be caused by followings except:

Solution:
QUESTION: 10

Typical applications of EBW are following except:

Solution:

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