Vb = 0.5 V cosα
Vb = V cos α
Vb = 0.5 V² cosα
Vb = V² cosα
B. Vb = V cos α
No drum
One drum
Two drums
Three drums
As an impulsive force
As a reaction force
Partly as an impulsive force and partly as a reaction force
None of the above
Decreasing initial steam pressure and temperature
Increasing exhaust pressure
Decreasing exhausts pressure
Increasing the expansion ratio
Equal to
Twice
Three times
Four times
Mean diameter and thickness
Inside diameter and thickness
Outside diameter and thickness
Outside diameter and inside diameter
Efficiency of the boiler
Efficiency of the chimney
Efficiency of the fan
Power of the boiler
Regulate flow of boiler water
Check level of water in boiler drum
Recirculate unwanted feed water
Allow high pressure feed water to flow to drum and not allow reverse flow to take place
260 kW
282 kW
296 kW
302 kW
Safety valve
Water level indicator
Pressure gauge
Fusible plug
Ratio of thermal efficiency to Rankine efficiency
Ratio of brake power to the indicated power
Ratio of heat equivalent to indicated power to the energy supplied in steam
Product of thermal efficiency and Rankine efficiency
40 percent
50 percent
60 percent
70 percent
0.007 bar
0.053 bar
0.06 bar
0.067 bar
Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required
Empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler
Put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit
Increase the temperature of saturated steam without raising its pressure
Last superheater or reheater and air preheater
Induced draft fan and forced draft fan
Air preheater and chimney
None of the above
Remain same
Increases
Decreases
Behaves unpredictably
More
Equal
Less
Could be more or less depending on the size of plant
There is a pressure drop in the nozzle
Fluid flows through the nozzle
Pressure drops and fluid flows through the nozzle
There is no pressure drop and fluid does not flow through the nozzle
A horizontal steam engine requires less floor area than a vertical steam engine
The steam pressure in the cylinder is not allowed to fall below the atmospheric pressure
The compound steam engines are generally non-condensing steam engines
All of the above
Internally fired
Externally fired
Internally as well as externally fired
None of these
Horizontal straight line
Vertical straight line
Straight inclined line
Curved line
Piston diameter, length of stroke and calorific value of fuel
Piston diameter, specific fuel consumption and Calorific value of fuel
Piston diameter, length of stroke and speed of rotation
Specific fuel consumption, speed of rotation and torque
Steam boiler
Steam turbine
Steam condenser
Steam injector
Hygroscopic substances
Water vapour in air
Temperature of air
Pressure of air
Equal to unity
Less than unity
Greater than unity
None of these
One half
One third
One fourth
One fifth
Cut-off ratio
Expansion ratio
Clearance ratio
None of these
Pulverised fuel fired boiler
Cochran boiler
Lancashire boiler
Babcock and Wilcox boiler
kg of steam produced
Steam pressure produced
kg of fuel fired
kg of steam produced per kg of fuel fifed
Increases the mean effective pressure
Increases the workdone
Decreases the efficiency of the engine
All of these
The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
The expansion of steam takes place partly in the fixed blades and partly in the moving blades
The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
The pressure and temperature of steam remains constant