1. In a gas cut plate, the cut show grooves and has deep drag lines. This is due to ?

tip to close to the cut surface

too much travel speed

less oxygen pressure

smaller size cutting nozzle

Answer: tip to close to the cut surface

Explanation:


2. Ratio of oxygen and acetylene required for gas welding is ?

1:2

1:1

1:3

2:1

Answer: 1:1

Explanation:


3. If a worker has suffered from electric shock, he should be ?

given an alcoholic drink

given a cold drink

made to walk

kept warm and covered

Answer: kept warm and covered

Explanation:


4. In gas tungsten arc welding (TIG) following polarity is used ?

DC straight polarity

DC reverse polarity

alternating current high frequency

all of the above

Answer: DC straight polarity

Explanation:


5. Which of the following is NOT a common welding technique ?

Gas Metal Arc Welding (GMAW)

Electric Resistance Welding (ERW)

Fusion Welding

Gas Tungsten Arc Welding (GTAW)

Answer: Fusion Welding

Explanation:

Answer: C) Fusion Welding is not a specific welding technique, but rather a term that refers to any welding process that involves melting the base metals in order to fuse them together.These are welding techniques GMAW, ERW, and GTAW, among others.


6. Which of the following is not one of the four techniques of welding ?

Tungsten Inert Gas (TIG) Welding

Metal Inert Gas (MIG) Welding

Stick Welding

Plasma Cutting

Answer: Plasma Cutting

Explanation:

Answer: D) Plasma Cutting is not one of the four techniques of welding. Welding techniques are the various methods used to join two or more pieces of metal by melting and fusing them together. There are several welding techniques available, including: Gas Metal Arc Welding (GMAW) Gas Tungsten Arc Welding (GTAW) Flux-Cored Arc Welding (FCAW) Shielded Metal Arc Welding (SMAW) Submerged Arc Welding (SAW) Electron Beam Welding (EBW) Laser Beam Welding (LBW) Friction Stir Welding (FSW) Resistance Spot Welding (RSW) Ultrasonic Welding (USW)


7. Which welding technique is considered the "best" depends on ?

The type of metal being welded

The thickness of the metal being welded

The skill level of the welder

All of the above

Answer: All of the above

Explanation:

Answer: D) All of the above. The "best" welding technique depends on various factors such as the type of metal being welded, the thickness of the metal being welded, and the skill level of the welder. Different welding techniques have their own advantages and disadvantages and may be more suitable for certain applications than others. Therefore, the best welding technique is the one that meets the specific requirements of the project at hand.


8. Which of the following are two of the most common welding techniques ?

Gas Metal Arc Welding (GMAW) and Gas Tungsten Arc Welding (GTAW)

Laser Beam Welding (LBW) and Electron Beam Welding (EBW)

Flux-Cored Arc Welding (FCAW) and Shielded Metal Arc Welding (SMAW)

Friction Stir Welding (FSW) and Submerged Arc Welding (SAW)

Answer: Gas Metal Arc Welding (GMAW) and Gas Tungsten Arc Welding (GTAW)

Explanation:

Answer: A) Gas Metal Arc Welding (GMAW) and Gas Tungsten Arc Welding (GTAW) are two of the most common welding techniques. GMAW, also known as Metal Inert Gas (MIG) welding, uses a consumable wire electrode and a shielding gas to protect the weld from contamination. GTAW, also known as Tungsten Inert Gas (TIG) welding, uses a non-consumable tungsten electrode and a shielding gas to protect the weld. Both techniques are widely used in manufacturing, fabrication, and repair applications due to their versatility and relative ease of use.