What method in striking an arcis recommended for the beginners?

In the symbol E-6013, letter“E” stands for:

The eyes can be protected during the welding operation by using:

It is done by touching the electrode on the base metal like scratching a matchstick.

It is done by moving the electrode downward until it touches the base metal, then bringing the electrode up slightly to form an arc.

The coating of electrode is sometimes called         .

The electrode which has no coating is called         .

The symbol E-6013, 60 means         .

The third digit in the symbol E-6013, 1 stands for               .

The diameter of the electrode to be used in a welding operation depends upon the:

Electrodes are classified according to the kind of the base metal for which they are recommended for mild steel low hydrogen, low energy, cast iron, stainless steel and various non-ferrous electrodes.

Determine what current is available, since not all electrodes can be used for both AC or DC current and others are more economical to use with one type of current than the other.

Heavy materials of complicated design require electrodes of high ductility. Thin plates require low penetration electrodes with stable arcs at low current values.

Deep penetration electrodes are required when edge is not levelled and fit-up is tight. Mild penetration, thin-coated electrodes are best when gaps are open.

Some electrodes are preferable to others for off- position   welding.

Job specifications may indicate the class of electrodes to be used. Otherwise, the service requirements (e.g. desired tensile strength, ductility, corrosion or abrasion resistance, etc.) should be considered.

Job specifications may indicate the class of electrodes to be used. Otherwise theservice requirements (e.g. desired tensile strength, ductility, corrosion orabrasion resistance, etc.) should be considered.

The choice of expensive electrodes whose qualities or properties exceed those normally demanded by the job is economically unwise when less expensive electrodes.

A tall tank cylinder were  oxygen tank is stored. 

A tank of lesser height were acetylene cylinder is stored.

A device to regulate the flow of oxygen.

A device to regulate the flow of acetylene. It has an arrow pointing towards the torch body.

A type of hose wherein acetylene gas flows towards the Directions of the torch body.

A type of hose wherein oxygen gas flows towards the Directions of the torch body.

A metal chain wrapped around the body of the cylinders and tied securely to the metal frame stand.

It Measures gas pressure that flows or is released from the torch body to the nozzle or tip.

It is a registered gas pressure found in the cylinder.

It is made up of a small ball held tightly against a seat by a spring.

It measures the amount of pressure or force of the gas that flows oris released from the cylinder.

They hold the forces on both sides of a diaphragm in balance.

Why is cleaning of surface and edges of metal so important?

What tool is used to easily metal scales, old paints and rust.

Why is an airtight fit-up necessary for Tee-joint preparation?

Root face of beveled joint will not exceed a maximum of_____.

An electrode oven with a maintaining temperature of 70 °C+/- 10 is called                .

An oven which holds a temperature of 150 °C+/- 20 is called                                                      .

Which electrode is used for mild steel?                                                                                    

Which electrode is used for low alloy steel?                                             

To prevent the cylinder valves from breaking down, these should be provided with         .

Beveled joint is considered “critical” in the category of weld. This means that:

Protects the eyes from weld sparks and must always be worn by a worker in the shop.

Covers the face and allows the welder to see legibly on weldment while performing welding

Is a transparent hard plastic covering the face while clearing and grinding.

Worn by welder as an additional safety for head and hair.

Is an equipment that protects the welder from fumes and odor of industrial waste.

Is a front body protection device while welding.

Is worn by welder during welding difficult position.

Are worn by welders to protect the hands from heat and burns.

Are protective glasses set in a flexible frame that fit snugly against the face.

Are made of chrome leather and they protect our feet from spattering heat.