Engine: Steam Plants

1. A as steam passes through the steam admission valve and there is a drop in pressure without the performance of work
2. B whenever there is leakage of steam from one stage to another through the throttle valve packing gland
3. C as a result of friction created when steam passes through the nozzle block
4. D as a result of fluid friction caused by frequently throttling the turbine wheel and blade speed

Tip: press A-D to answer