Q.1
The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be
Q.2
The draught in locomotive boilers is produced by a
Q.3
The function of a cross-head is to guide motion of the _________ and to prevent it from bending.
Q.4
A compound steam engine in which piston rods of high pressure and low pressure cylinders ' are attached to two different cranks set at 180° to each other, is called
Q.5
The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades.
Q.6
The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam.
Q.7
In turbines, the fluid undergoes a continuous steady flow process and the speed of flow is
Q.8
Expanding steam to a very low pressure (high vacuum) in steam engines is
Q.9
1 kg.m is equal to
Q.10
The working pressure range for a LaMont boiler is
Q.11
By compounding the expansion of steam in two or more cylinders, the length of stroke
Q.12
A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called
Q.13
The function of a flywheel is
Q.14
Ultimate analysis of fuel is determination of percentage of
Q.15
Proximate analysis of fuel is determination of percentage of
Q.16
Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power)
Q.17
In forced circulation steam boilers, the force is applied
Q.18
Pulverized fuel is used for
Q.19
A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be
Q.20
Blading efficiency is also known as
Q.21
Stage efficiency is also known as
Q.22
The fittings mounted on the boiler for its proper and safe functioning is a
Q.23
The behavior of coal in a furnace is determined by
Q.24
The relative heat absorption for successively added equal areas of boiler convection heating surfaces
Q.25
One kilowatt-hour energy is equivalent to
Q.26
The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine.
Q.27
The function of an eccentric rod is
Q.28
A double acting steam engine with a cylinder diameter of 190 mm and a stroke of 300 mm has a cut-off of 0.35. The expansion ratio for this engine is nearly
Q.29
Steam in water tube boiler as compared to fire tube boiler
Q.30
Thermal equilibrium means that the flow of steam is
0 h : 0 m : 1 s