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Materials and Construction

Materials and Construction
Condenser tubes are not made of

Wood metal
Aluminium brass alloy
Muntz brass
Cartridge brass

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Materials and Construction
Diamagnetic materials are magnetised

With eddy currents only
Only slightly
Strongly
In a direction opposite to that of the applied field

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Materials and Construction
Constantan is an alloy of

Cu (55%) & Ni (45%)
Cu (55%) & Sn (45%)
Pt (95%) & Rh (10%)
Fe (80%) & Ni (20%)

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Materials and Construction
An elastic behaviour of materials is expressed in terms of

Stress-strain curve
None of these
Relaxation time
Hysterisis loop area

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Materials and Construction
Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the

Endurance limit
None of these
Ultimate tensile strength (U.T.S.)
Elastic limit

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Materials and Construction
In drop forging process, the forging is done by dropping the __________ at high velocity.

Die with hammer
Workpiece
Hammer
Weight on hammer

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