The stage efficiency (ηS) is given by (where ηB = Blading efficienc – McqOptions

MCQOPTIONS

1.	The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle efficiency)
A.	ηS = ηB × ηN
B.	ηS = ηB / ηN
C.	ηS = ηN / ηB
D.	None of these
Answer» B. ηS = ηB / ηN

Discussion

No Comment Found

Related MCQs

A single ended Scotch marine steam boiler may have one to four furnaces which enter from front end of the boiler.
The fire tubes in a Cochran boiler usually have __________ diameter.
A device used to heat feed water by utilising the heat in me exhaust flue gases before leaving through the chimny, is known as
A Cochran boiler is a horizontal multi-tubular boiler.
Which of the following is required for a steam condensing plant ?
Locomotive boiler produces steam at a very high rate.
The ratio of heat actually used in producing the steam to the heat liberated in the furnace is known as equivalent evaporation from and at 100° C.
A condenser maintains a low pressure (below atmospheric) so as to obtain the maximum possible energy from steam and thus to secure a high efficiency.
In a La-mont boiler, there is a __________ circulation of water and steam.
The internal flue tubes of a Lancashire boiler are reduced in diameter at the back to provide access to the lower part of the boiler.