Aeroplanes employ following type of compressor
A). Radial flow
B). Axial flow
C). Centrifugal
D). None of the above
Water gas is produced by
A). Carbonisation of coal
B). Passing steam over incandescent coke
C). Passing air and a large amount of steam over waste coal at about 65°C
D). Partial combustion of coal, eke, anthracite coal or charcoal in a mixed air steam blast
Producer gas is produced by
A). Carbonisation of coal
B). Passing steam over incandescent coke
C). Passing air and a large amount of steam over waste coal at about 65°C
D). Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
The criterion of the thermodynamic efficiency for rotary compressor is
A). Isentropic compression
B). Isothermal compression
C). Polytropic compression
D). None of the above
Gas turbines for power generation are normally used
A). To supply base load requirements
B). To supply peak load requirements
C). To enable start thermal power plant
D). In emergency