Steels with high carbon equivalent have poor weldability, because in these steels during welding

A Carbon and other alloying elements get oxidised from the weld pool
B Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld
C Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld
D Segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld

Correct Answer: Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld

Bissoy MCQ
#Chemical Engineering #Chemical Engineering Basics

Related Questions

In backhand welding, the angle between the welding rod and the work is ________ as compared to forehand welding.
A Same
B Less
C More
D None of these
In forehand welding, the angle between the welding torch and the work is ________ as compared to backhand welding.
A Same
B Less
C More
D None of these
If the flame of the welding torch is directed towards the progress of welding, then what will you call the welding technique?
A Forehand welding
B Flux cored ARC welding
C Electro slag welding
D Pulsed spray welding
In DC arc welding, if leads are arranged in work as Negative pole of the welding arc and electrode as Positive pole of the welding arc, the arrangement is known as
A Fusion
B Reverse polarity
C Forward welding
D Direct polarity
What is the type of shielding gas for GTAW (Gas Tungsten Arc Welding) used for carbon steels only called?
A Argon H2
B Argon CO2
C Argon Helium
D Helium
For hardening alloy steels and high speed steels, they are heated to
A 1100 to 1300°C
B 1300 to 1500°C
C 500 to 600°C
D 700 to 900°C
Low carbon steels are those in which carbon percentage is around
A 0.1 to 0.35
B 0.4 to 0.7
C 0.8 to 1.5
D 1.5 to 2
A Thevenin ac equivalent circuit always consists of an equivalent ac voltage source and an equivalent capacitance.
A True
B False
Norton's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent voltage source in series with an equivalent impedance.
A True
B False
Thevenin's theorem provides a method for the reduction of any ac circuit to an equivalent form consisting of an equivalent current source in parallel with an equivalent impedance.
A True
B False

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