Engineering Thermodynamics
During which of the following process does heat rejection takes place in Carnot cycle?

Isentropic expansion
Isentropic compression
Isothermal expansion
Isothermal compression

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Engineering Thermodynamics
Coke is produced

When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel
From the finely ground coal by moulding under pressure with or without a binding material
When coal is first dried and then crushed to a fine powder by pulverizing machine
By heating wood with a limited supply of air to a temperature not less than 280°C

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