Compressors, Gas Turbines and Jet Engines
An ideal air compressor cycle without clearance on P-V diagram can be represented by following processes

One adiabatic, one isobaric and two constant volumes
Two adiabatic and two isobaric
Two adiabatic, one isobaric and one constant volume
One adiabatic, two isobaric, and one constant volume

ANSWER DOWNLOAD EXAMIANS APP

Compressors, Gas Turbines and Jet Engines
Water gas is produced by

Partial combustion of coal, eke, anthracite coal or charcoal in a mixed air steam blast
Carbonisation of coal
Passing steam over incandescent coke
Passing air and a large amount of steam over waste coal at about 65°C

ANSWER DOWNLOAD EXAMIANS APP