Steam Boilers_ Engines_ Nozzles And Turbines — Part 2 MCQs with Explanations

3600 kJ is the correct answer to “One kilowatt-hour energy is equivalent to”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Steam jet is the correct answer to “The draught in locomotive boilers is produced by a”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Piston rod is the correct answer to “The function of a cross-head is to guide motion of the _________ and to prevent it from bending.”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

9.81 Joules is the correct answer to “1 kg.m is equal to”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

3.5 to 20 MN/m2 is the correct answer to “The working pressure range for a LaMont boiler is”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Decreases is the correct answer to “By compounding the expansion of steam in two or more cylinders, the length of stroke”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

None of these is the correct answer to “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”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

To prevent fluctuation of speed is the correct answer to “The function of a flywheel is”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Carbon, hydrogen, nitrogen, sulphur, moisture is the correct answer to “Ultimate analysis of fuel is determination of percentage of”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Fixed carbon, ash, volatile matter, moisture is the correct answer to “Proximate analysis of fuel is determination of percentage of”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

450 m/s is the correct answer to “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”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

282 kW is the correct answer to “In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s and the blade velocity is 454 m/s. The power output in kW of steam will be”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Receiver type compound engine is the correct answer to “A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Woolf type compound engine is the correct answer to “A compound steam engine in which piston rods of high pressure and low pressure cylinder's are attached to two different cranks set at 180° to each other, is called”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Above dew point temperature of flue gases is the correct answer to “The temperature of flue gases at air heater outlet should be”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

10 to 15% is the correct answer to “The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades.”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

The expansion of steam takes place partly in the fixed blades and partly in the moving blades is the correct answer to “In a reaction turbine”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

0.4 is the correct answer to “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”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Less is the correct answer to “The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam.”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Very high is the correct answer to “In turbines, the fluid undergoes a continuous steady flow process and the speed of flow is”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Uneconomical is the correct answer to “Expanding steam to a very low pressure (high vacuum) in steam engines is”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Constant pressure is the correct answer to “Superheating of steam is done at”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Dynamic is the correct answer to “The action of steam in a steam turbine is”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Non-coking or free burning coal is the correct answer to “The best suited coal for chain or traveling grate stoker boiler is”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required is the correct answer to “The principal function of a stop valve is to”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

It erodes furnace walls is the correct answer to “Which is not correct statement about effect of sulphur in fuel”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Feed check valve is the correct answer to “A valve installed between the boiler and the feed pump is”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

10 to 15% is the correct answer to “The friction present between the steam and the nozzle surfaces reduces the heat drop by”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

All of the above is the correct answer to “In a boiler, the heat is lost”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Reciprocating pump is the correct answer to “Duplex feed pumps are used in small steam boilers. These operate on the principle of”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Cumulative heat drop to the isentropic heat drop is the correct answer to “The reheat factor is the ratio of the”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Any one of the above is the correct answer to “The diagram factor is the ratio of the”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Solid and vapor phases are in equilibrium is the correct answer to “Sublimation region is the region where”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Both (A) and (B) is the correct answer to “In reaction turbines, the axial thrust is due to”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Throat and exit is the correct answer to “In a nozzle, whole frictional loss is assumed to occur between”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Externally fired is the correct answer to “Water tube boilers are”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Internally fired is the correct answer to “Fire tube boilers are”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Allow high pressure feed water to flow to drum and not allow reverse flow to take place is the correct answer to “The feed check valve is used in order to”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Cut-off ratio is the correct answer to “The ratio of the volume at cut-off to the swept volume is called”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.

Clearance ratio is the correct answer to “The ratio of the clearance volume to the swept volume is called”. This question is standard in competitive examination syllabi for Steam Boilers_ Engines_ Nozzles And Turbines.