Mechanical Engineering - Workshop Technology - Discussion
Discussion Forum : Workshop Technology - Section 5 (Q.No. 44)
44.
For arc welding
Discussion:
10 comments Page 1 of 1.
Venky said:
6 years ago
A welding power supply is a device that provides an electric current to perform welding. Welding usually requires high current (over 80 amperes) and it can need above 12,000 amperes in spot welding. Low current can also be used; welding two razor blades together at 5 amps with gas tungsten arc welding is a good example.
Mandeep Vishnoi said:
7 years ago
Arc welding is a type of welding that uses a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point. They can use either direct (DC) or be alternating (AC) current, and consumable or non-consumable electrodes.
So, option D is correct.
So, option D is correct.
Ankit Bhayani said:
7 years ago
In arc welding, the arc is produced by dc current.
We can supply both AC and DC current but rectifier converts it into DC current which causes arc for welding.
So answer C) DC CURRENT is correct.
We can supply both AC and DC current but rectifier converts it into DC current which causes arc for welding.
So answer C) DC CURRENT is correct.
Raj kumar kushwaha said:
3 years ago
Option C is right because 50hz frequency used in eclectic equipment neither low and high frequency use.
Jnk said:
9 years ago
In arc welding both ac and dc welding used its denpend upon types of material of workpiece.
Kalpesh Prajapati said:
6 years ago
As per my knowledge, both AC and DC can be used as per requirement.
Pankaj Kothari said:
8 years ago
Both AC and DC current is used. Option D is correct.
Annomi said:
8 years ago
Yes option D is correct.
Mann solanki said:
6 years ago
I agree with @Ankit.
Sachin said:
8 years ago
Yes, I agree @Jnk.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers