Engineering Thermodynamics
The efficiency of the Carnot cycle may be increased by

Decreasing the highest temperature
Increasing the lowest temperature
Increasing the highest temperature
Keeping the lowest temperature constant

ANSWER DOWNLOAD EXAMIANS APP

Engineering Thermodynamics
Coke is produced

By heating wood with a limited supply of air to a temperature not less than 280°C
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

ANSWER DOWNLOAD EXAMIANS APP