md elements 401

It is a locking device that is used to maintain pressure between threads of the bolt and nut.

• Gasket

• Lock nuts

• Lock washer

• Filler

For ordinary steel, the modulus of elasticity usually falls between million pounds.

• 20 to 31

• 20 to 35

• 35 to 45

• 25 to 30

It is the permissible variation of the size.

• Tolerance

• Limits

• Fits

• None of these

Which one is the hardness material?

• Steel

• Brorize

• Diamond

• Brass

A very effective flux for soldering galvanized iron and zinc.

• Soldering pastes

• Muriatic acid

• Zinc chloride

• Cut acid

The operation of producing a circular hole by removing solid metal.

• Knurling

• Reaming

• Boring

• Drilling

It is the surface finish of micrometer in rms.

• 1

• 3

• 2

• 4

Grinding the gates, fins and sprues from casting is termed as

• Honing

• Tumbling

• Snagging

• Truing

The process of cutting internal threads by means of a cutting tool.

• Tapping

• Reaming

• Chamfering

• Honing

The process of checking the surface of a piece by rolling depressions into the surface.

• Honing

• Snagging

• Knurling

• Reaming