Unit 13 - Agricultural Mechanics Safety Part II

Question 1

What affects the strength of the current flow?

Accepted Answer

Amperage Setting

Question 2

What does the manual control on DC welding machines allow the operator to do?

Accepted Answer

Change the direction of current flow in the welding circuit

Question 3

What is a direct reflection of the amperage setting?

Accepted Answer

Heat produced

Question 4

How is the consumable wire on a MIG machine fed?

Accepted Answer

Automatically from a spool

Question 5

What do AC welding machines plug into?

Accepted Answer

Normal 220V Wiring

Question 6

What do DC machines have that allows the welder to change the direction of current flow?

Accepted Answer

Manual control

Question 7

What is the usual range of amperage settings for welders in agricultural mechanics?

Accepted Answer

20-225 amps

Question 8

What are some DC welders operated by?

Accepted Answer

An internal combustible engine

Question 9

What welding machines act as electrical generators?

Accepted Answer

DC

Question 10

What is the electrode used in MIG welding?

Accepted Answer

Consumable wiring

Question 11

What is the amount of time a welder can be used before it must be allowed to cool down?

Accepted Answer

Duty Cycle

Question 12

What allows the operator to modify the characteristics of the weld on welding machines?

Accepted Answer

Both

Question 13

What types of welding machines do SMAW work?

Accepted Answer

All of the above

Question 14

What does the wire move through and the shielding gas injected to on a MIG welding machine?

Accepted Answer

Gun nozzle

Question 15

What are the two directions of current flow in DC welding machines referred to as?

Accepted Answer

2 and 3

Questions 15