Power Plant Guruji

Boiler Operation Engineer Previous year Questions With Answer Set - 14 Question 1.Which one is a Boiler Mounting A. Economiser B. Super heater C. Re-heater D. Boiler drum safety valve Ans. D Question 2.Classifier is a part of A. Coal mill B. Coal feeder C. Coal bunker D. None of the above Ans. A Question 3.Thermal Power Plant works on A. Carnot Cycle B. Rankine Cycle C. Modified Rankine Cycle D. None of the above Ans. C Question 4.Modern utility boilers are supported at the top and are hanging type. It is to ___________ A. Keep vertical B. Allow free expansion C. Restrict expansion D. None Ans. B Question 5.Residual Life / Remnant Life Assessment ( RLA ) of boiler is carried out as per IBR 1950 Regulation ______________ A. 380 B. 391A C. 320 D. None of the above Ans. B Question 6.Atomizing of HFO in burners is carried out through A. Compressed Air B. Steam C. Flue gas D. Pure oxygen Ans. B Question 7.On load cleaning of water wall tube surface is carried out by A. Wall de-slaggers B. L

Boiler Operation Engineer Previous year Questions With Answer Set - 13 Question 1.Excess penetration is a term used to describe A. Destructive testing of weld B. Defect in weld joint C. Holes in serration pads in ESP D. All of the above Ans. B Question 2.Which of the following liquid fuels has more viscosity A. Naphtha B. Light Diesel oil C. High speed Diesel D. Heavy fuel oil Ans. D Question 3.In water walls of modem utility boiler, water flows from A. Top to bottom B. Bottom to top C. Horizontally D. Can be any one of the above Ans. B Question 4.Dissolved oxygen from feed water is removed in A. Boiler Drum B. Low pressure heaters C. High pressure healers D. De-aerator Ans. D Question 5.Which equipment of power plant uses Sector plates? A. Primary air fans B. Scrapper conveyor C. Air pre-heater D Main Turbine Ans. C Question 6.Air leakage is normally more in A. Tubular air preheater B. Rotary air preheater C. Same in both D. None of the above Ans. B Question 7.HP dozing in power plant

Boiler Operation Engineer Previous year Questions With Answer Set - 12 Question 1. Secondary air in a pulverised fuel boiler is used to: A. Carry pulverised coal to the burners B. Assist in complete combustion of fuel C. Clean the boiler walls D. Carry mill reject to reject coal bunkers Ans. B Question 2. What is sorbent in FBC ? A. Sand B. Ash C. Lime Stone D. All of the above Ans. C Question 3. Which type of raw coal feeder gives accurate reading for mill loading in T/hour ? A. Volumetric feeder B. Gravimetric feeder C. Rotary feeder D. All of the above Ans. B Question 4. LRSB’s are used to remove ash deposits from A. Water walls B. Re-heaters C. Economiser hoppers D. ESP hoppers Ans. B Question 5. Which of the following safety valve in power plant uses Superior quality metallurgy A. Drum B. Cold Re-heat C. Main Steam D. De-aerator Ans. C Question 6. In a pulverised fuel boiler, the ash collection A. In bottom ash hopper is more than ESP B. In ESP hoppers more than bottom Ash hopper

Boiler Operation Engineer Previous year Questions With Answer Set - 11 Question 1. Blowdown of a boiler controls A. pH of feed water B. Alkalinity of feed water C. Hardness of Feed Water D. TDS of feed water Ans. D Question 2. Preservation of boiler is required A. When boiler is not used for longer duration B. During annual shutdown C. After continuous operation of boiler for five years D. At least twice in its life period Ans. A Question 3. The material used to control SOx in the FBC boiler is ………… A. limestone B. Silica C. Alumina D. Lime Ans. A Question 4. Which of those fuels has the highest heating value? A. Methane B. Hydrogen C. Diesel D. LPG Ans. B Question 5. To regulate and control the flow ……. Types of valves are normally used. A. Ball valves B. Gate valves C. Globe valves D. Swing check valves Ans. C Question 6. The latent heat of the steam at atmospheric pressure is ………… A. 1875 KJ/kg B. 2257KJ/kg C. 860KJ/kg D. 539KJ/kg Ans. B Question 7. A boiler is generating saturated

Question 1. Bed slumping is done in AFBC Boiler to A. Reduce Pressure B. Reduce temperature C. Reduce load D. Maintain bed temperature Ans. C Question 2. Mobrey switch is used to A. Control drum level B. Control fuel flow C. Control air flow D. Control fan speed Ans. A Question 3. Scoop tube control is used in feed pump to A. Control Vibration B. Current measurement C. Control PH of feed water D. Control drum level Ans. D Question 4. For easy storage of bagasse A. Bagasse is air dried B. Baling is done C. Bagasse is washed D. Water is sprayed Ans. B Question 5. Oil burner is used in Pulverised boiler to – A. To reduce soot formation B. To reduce coal consumption C. Stabilise the flame during low load and provide ignition energy during start up D. To increase reheat steam temperature Ans. C Question 6. Air vent is provided at boiler steam drum to remove air from boiler A. During high pressure condition B. During initial up and startup C. During load change D. During high furnace pressur

Question 1. ………… is a energy saving method of any boiler. A. Damper control of fans B. Duct by pass C. Speed control of fans D. None of the above Ans. C Question 2. Excessive blow down ………… A. Reduces Efficiency B. Increase Chemical Consumption C. Increase make up water D. All the above Ans. D Question 3. Oxygen in flue gas is measured by …………… A. Orsat Apparatus B. Zirconia Sensor C. Bomb Calorimeter D. Opacity Meter Ans. B Question 4. Efficiency of a thermal power plant is roughly ………. A. 80% B. 70% C. 35% D. Above 80% Ans. C Question 5. 456 Kcal is equal to ………….. kJ. A. 250 B. 1908 C. 3027 D. Cannot be changed Ans. B Question 6. Deaerator is placed at higher elevation A. For good house keeping B. To keep the building cool C. To increase NPSH A and avoid Cavitation in Boiler feed pump D. To vent steam easily Ans. C Question 7. Stoichiometric combustible mixture speaks about A. Fuel calorific value B. Temperature of air and fuel C. Unburnt carbon in flue gas D. Theoretical air Ans. D