The maximum length of a screw conveyer is about___________?

Deaerative heating is done to_____________?

Deaerative heating is done to
A. heat the water
B. heat the air in the water
C. remove dissolved gases in the water

Example of overfeed type stoker is___________?

A. chain grate
B. spreader
C. travelling grate
D. all of the above

Incase of reaction steam turbine___________?

A. there is enthalpy drop both in fixed and moving blades
B. there is enthalpy drop only in fixed blades
C. there is enthalpy drop only in moving blades
D. none of the above

The artificial draught normally is designed to produce____________?

A. less smoke
B. more draught
C. less chimney gas temperature
D. all of the above

Primary air is that air which is used to_____________?

A. reduce the flame length
B. increase the flame length
C. transport and dry the coal
D. provide air around burners for get¬ting optimum combustion

In jet type condensers___________?

A. cooling water passes through tubes and steam surrounds them
B. steam passes through tubes and cooling water surrounds them
C. steam and cooling water mix
D. steam and cooling water do not mix