Q.1
Water boils when its vapor pressure
Q.2
Cut-off governing as compared to throttle governing is
Q.3
A boiler in India should conform to safety regulations of
Q.4
The ratio of the energy required to produce the artificial draught (expressed in meters head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as
Q.5
In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be
Q.6
The pressure of steam __________ while flowing through a nozzle.
Q.7
In a single acting steam engine
Q.8
Willian’s line for the steam engine is a straight line relationship between the steam consumption per hour and
Q.9
In natural circulation type boiler,
Q.10
The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle)
Q.11
Reheating of steam in a turbine
Q.12
If the critical pressure ratio for steam is 0.546, then the steam is initially
Q.13
The function of injector used in small steam plants is to
Q.14
A condenser where circulating water flows through tubes which are surrounded by steam, in known as
Q.15
A wet vapor can be completely specified by
Q.16
A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the direction of the blade motion.
Q.17
The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)
Q.18
In a reaction turbine, when steam flows through the fixed blades,
Q.19
Over fire burning is the phenomenon of
Q.20
The evaporation of 15.653 kg of water per hour from and at 100°C is called
Q.21
The ratio of total useful heat drop to the total isentropic heat drop, is called
Q.22
With increase in load, radiant superheater has
Q.23
When the cross-section of a nozzle increases continuously from entrance to exit, it is called a
Q.24
The number of drums in Benson steam generator is
Q.25
A closed vessel made of steel and used for the generation of steam is called a
Q.26
The ratio of heat equivalent to brake power to the energy supplied in steam is known as
Q.27
A condenser in a steam power plant
Q.28
Vacuum for reciprocating steam engines compared to steam turbines is
Q.29
In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as
Q.30
Which of the following compound steam engine requires a smaller flywheel?
0 h : 0 m : 1 s