Steam Boilers, Engines, Nozzles and Turbines
Coke is produced by

Enriching carbon in the coal
Pulverizing coal in inert atmosphere
Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
Heating wood in a limited supply of air at temperatures below 300°C

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
The indicated thermal efficiency is defined as the

Ratio of brake power to the indicated power
Ratio of heat equivalent to indicated power to the energy supplied in steam
Product of thermal efficiency and Rankine efficiency
Ratio of thermal efficiency to the Rankine efficiency

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
The function of a piston in a steam engine is

To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment
To transfer motion from the piston to the cross-head
None of these
To guide motion of the piston rod and to prevent it from bending

ANSWER DOWNLOAD EXAMIANS APP