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Chemical Engineering Basics

Chemical Engineering Basics
Filler material used in welding having the lowest melting point out of the following is

Soft solder
Brazing spelter
Aluminium
Silver solder

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Chemical Engineering Basics
A controller action in which there is a con-tinous relation between the values of controlled variable and the rate of change of conrolled output signal is called the __________ action.

Derivative
None of these
Integral
Proportional

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Chemical Engineering Basics
Creep consideration is the most important in case of the

Cast iron pipes
Steam engine flywheel
Cycle chains
Blades of gas turbines

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Chemical Engineering Basics
Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about

1.2090277777778
0.70902777777778
0.95902777777778
0.37569444444444

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Chemical Engineering Basics
Copper is not present as an alloying constituent in

Delta metal
Nichrome
Constantan
Silicon bronze

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Chemical Engineering Basics
Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

Cementite
Martensite
Austenite
Pearlite

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