WORKSHOP TECHNOLOGY QUIZ

Vertical core

Horizontal core

Drop core

Balanced core

Should be bevelled to a single-V or U-groove

Should have a double-V or U-groove on both sides

Do not require bevelling

Should have a double-V or U-groove on one side

Simple die

Combination die

Progressive die

Compound die

The sand grains stick together

None of these

It clings to the sides of a moulding box

It evolves a great amount of steam and other gases

Work is connected to the negative terminal and the electrode holder is earthed

Work is connected to the positive terminal and the electrode holder to the negative terminal

Work is connected to the negative terminal and the electrode holder to the positive terminal

Work is connected to the positive terminal and the electrode holder is earthed

1 to 2 mm/m

10 to 15 mm/m

2 to 5 mm/m

5 to 10 mm/m

Charcoal and iron oxide

Charcoal, iron oxide and aluminium

Iron oxide and aluminium

Charcoal and aluminium

Two or more operations are performed simultaneously at the single stroke of the ram

Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram

Two or more cutting operations are performed at one station of the press in every stroke of the ram

None of the listed here

Backhand

Vertical

Forehand

None of the listed here

Deliver the molten metal from pouring basin to gate

Act as a reservoir for the molten metal

Deliver molten metal into the mould cavity

Feed the molten metal to the casting in order to compensate for the shrinkage