railway RRB JE (CBT I + CBT II) Mock Test 2024 Production Engineering (Manufacturing) Joining Welding
Consider the following different zones in an electric arc :
|
(A) |
Cathode spot |
1. |
Gaseous region with a sharp drop in voltage |
|
(B) |
Anode space |
2. |
Area where electrons are absorbed |
|
(C) |
Anode spot |
3. |
Voltage drop is not sharp |
|
(D) |
Arc column |
4. |
Small area emitting the electrons |
Choose the option in which given pairs are correctly matched.
1
A – 2, B – 1, C – 3, D – 4
2
A – 4, B – 2, C – 3, D – 1
3
A – 4, B – 1, C – 2, D – 3
4
A – 2, B – 1, C – 4, D – 3