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Materials and Construction

Materials and Construction
In a plate type heat exchanger, heat transfer plates are never made of

Cast iron
Stainless steel
Titanium
Hastealloy C

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Materials and Construction
Dielectric strength of a material is

Its capacity to withstand high voltage
A magnetic property
Its capacity to resist the flow of current
Its energy stroage capacity

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Materials and Construction
Most of the common metals have __________ crystal structure.

None of these
Orthorhombic
Cubic
Hexagonal

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Materials and Construction
__________ moulding process can not be used for thermoplastic plastics.

Injection
Compression
Extrusion
None of these

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Materials and Construction
Silicon percentage in acid resistant cast iron is about

20
14
4
8

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Materials and Construction
A hardness depth of about 3 mm can be achieved by induction hardness in __________ seconds.

100
250
500
5

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