1538. A dephlegmator is a

By Admin / September 7, 2025

Total condenser

Vacuum evaporator

Partial condenser

Double pipe heat exchanger

✅ The correct answer is option C.

1536. A black body when hot, emits heat radiation of __________ wavelengths.

1540. A composite flat wall of a furnace is made of two materials ‘A’ and ‘B’. The thermal conductivity of ‘A’ is twice of that of material ‘B’, while the thickness of layer of ‘A’ is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material ‘A’ is

1. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm².

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2. Transformer cores are normally made from

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