INTERNAL COMBUSTION ENGINES QUIZ

An oxidising process used for aluminium and magnesium articles is called

Sherardizing

Galvanizing

Anodizing

Parkerising

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In a ___, the molten metal is poured and allowed to solidify while the mould is revolving.

Slush casting method

Permanent mould casting method

Die casting method

Centrifugal casting method

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The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is

Vernier caliper

Inside micrometer

Outside micrometer

Depth gauge micrometer

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When the dimension is expressed as 20 -0.025 ⁺⁰∙⁰³⁵, then the basic size is

20 mm

19.975 mm

20.035 mm

20.025 mm

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The oxyacetylene gas used in gas welding produce a flame temperature of

1800°C

2100°C

3200°C

2400°C

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The electrodes used in spot welding have a tip of

Stainless steel

Copper

Brass

Aluminium

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The recrystallisation temperature of steel is

None of these

600°C

800°C

400°C

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A mortise gauge is a

Boring tool

Marking tool

Planing tool

Striking tool

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A jolt machine is used to

Produce uniform sand hardness throughout the mould

Produce uniform packing of sand in the mould

Ram the sand harder at the back of the mould and softer on the pattern face

Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould

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A basic hole is one whose

Lower deviation is zero

None of these

Upper deviation is zero

Lower and upper deviations are zero

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