Preparation of specimen

In which of the following is a semi permanent joint.

• Tapping and threading

• Nut bolt

• Brazing

• Soldering

Which of the following equipment used for holding the workpiece in different welding angles?

• C-clamp

• Wrench

• Plier

• Magnet clamp

How much temperature create in plasma cutting?

• 200000°C

• 20,000°C

• 2000°C

• 200°C

What does metal cutting do?

• Smoothen the workpiece.

• Grinding the workpiece.

• Shaping the workpiece.

• Weld the workpiece.

Which one of the following cutting method used ionized gas?

• Flame cutting.

• Plasma cutting.

• Laser cutting

• Hacksaw cutting.

After mounting the workpiece what will be ensure before welding?

• Safety

• Alignment of the workpiece

• Dimensions of the workpiece

• Current and voltage.

In electrode ER 4043 coding, what does 1st digit 4 indicates?

• Tensile strength of the electrode

• Series of the aluminum.

• Welding position.

• Chemical composition.

Which of the following electrode is used for Stainless steel?

• E-7018

• ER-308L

• ER70S-2

• Er-4043

A modern milling machine is often paired with 

(a)  

What is the melting point of Copper?

• 1073

• 659

• 1027

• 1083