Related Questions

In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the condenser pressure.
A Equal to
B Lower than
C Higher than
D None of these
In case of condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the atmospheric pressure.
A Equal to
B Lower than
C Higher than
D None of these
Expanding steam to a very low pressure (high vacuum) in steam engines is
A Desirable
B Economical
C Essential
D Uneconomical
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.
A Equal to
B Less than
C More than
D None of these
Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?
A A steam turbine develops higher speeds
B The efficiency of steam turbine is higher
C The steam consumption is less
D All of these
Vacuum for reciprocating steam engines compared to steam turbines is
A More
B Equal
C Less
D Could be more or less depending on the size of plant
In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of
A 10 atmospheres
B 20 atmospheres
C 30 atmospheres
D 40 atmospheres
The Diesel engines as compared to petrol engines require
A Bigger flywheel
B Smaller flywheel
C Same size of flywheel
D No flywheel
The ratio of exit pressure to inlet pressure of maximum mass flow rate per area of steam through a nozzle when steam is initially superheated is
A 0.555
B 0.578
C 0.5457
D 0.6
The ratio of exit pressure to inlet pressure for maximum mass flow rate per unit area of steam through a nozzle when steam is initially dry saturated is
A 0.6
B 0.578
C 0.555
D 0.5457

Next steps