Arc Length and its effects

 MCQ about Arc length and its effects.

1. How many types of arc length?

    (a) Two

    (b) Four

    (c) Three

    (d) Five

    Ans. (c)

2. Which types of arc length produces humming sound?

     (a) Long arc length

     (b) Short arc length

     (c) Normal arc length

     (d) Too long arc length

      Ans. (a)

3. Which types of arc length produces a popping sound?

     (a) Long arc length

     (b) Short arc length

     (c) Normal arc length

     (d) Too long arc length

     Ans. (b)

4. Which types of arc length produces a stable arc, steady sharp cracking sound?

     

     (a) Long arc length

     (b) Short arc length

     (c) Normal arc length

     (d) Too long arc length

     Ans. (c)

5. Which type of arc length of produces deep penetration weld?

     (a) Long arc length

     (b) Short arc length

     (c) Normal arc length

     (d) Too long arc length

     Ans. (b)

6. Which arc length produces correct fusion?

     (a) Long arc length

     (b) Short arc length

     (c) Normal arc length

     (d) Too long arc length

    

      Ans. (c)

7. Which type of arc length used in thin sheet metal?

     (a) Long arc length

     (b) Short arc length

     (c) medium arc length

     (d) deep short arc length

      Ans.(a)

8. What arc length should be used to reduce  the spatter?

     

     (a) Long arc length

     (b) Short arc length

     (c) Normal arc length

     (d) Too long arc length

     Ans. (c)

9.Which type of arc length of produces  poor fusion and penetration?

       

     (b) Short arc length

     (a) Long arc length

     (c) Normal arc length

     (d) Too long arc length

      Ans. (a)

10. What arc length should be used to even burning  of the electrode?

     (a) Long arc length

     (b) Short arc length

     (c) Normal arc length

     (d) Too long arc length

      Ans.(c)

11. Normal arc length in arc welding should be equal to ....

      (a) Half  the diameter of electrode

      (b) core wire diameter of electrode

      (c) Twice the rod diameter

      (d) 2.5 times the rod diameter

       Ans.(b)

12. Which type of arc length is used for welding in horizontal position is

      

       (a) Short arc

       (b) Long arc

       (c) Normal arc

       (d) None of these

        Ans. (a)

13. What is the effect of  the Arc length used for the long Arc?

       (a) Unstable arc

       (b) Correct metal deposition

       (c) Even burning of the electrode

       (d) Wastage due to melting of electrode

       Ans. (d)

14. The distance between the tip of the electrode and the parent metal where the arc strikes is called

      (a) Arc gap

      (b) Arc length 

      (c) Arc distance 

      (d)Arc width

      Ans. (b)