Steam Boilers, Engines, Nozzles and Turbines
Clearance ratio is the ratio of

Clearance volume to the swept volume
Clearance volume to the volume at cut-off
Swept volume to the clearance volume
Volume at cut-off to the swept volume

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
The object of producing draught in a boiler is

All of the listed here
To provide an adequate supply of air for the fuel combustion
To exhaust the gases of combustion from the combustion chamber
To discharge the gases of combustion to the atmosphere through the chimney

ANSWER DOWNLOAD EXAMIANS APP