183. Provisional order of the boiler is to be issued after,
(A) Satisfactory completion of the steam test
(B) Satisfactory completion of the hydraulic test in every case of registration
(C) In every case after repairing of Boiler
(D) In every case of Boiler transfer from another state into the state of Gujarat
184. In the context of BA rules 2011, Boiler shall be deemed to be not in use
(A) When it is in banked fire condition
(B) When the steam connection is closed
(C) When water connection is closed
(D) When the fire is removed and all steam and water connections are closed
185. Following is true in case of first class competency boiler attendant
(A) Can take charge of two or more boilers situated within the radius of 30 meters with a heating surface area exceeding 1000 square meter
(B) Can take charge of a single boiler having a heating surface area up to 1000 square meter
(C) Can take charge of many separate boilers situated within the radius of 30 meters in the same premises and not belong to one owner
(D) Can take charge of a single boiler having heating surface area more than 1000 square meter
186. Proficiency certificate of engineer can be canceled permanently if holder,
(A) Found guilty in allegations of negligence of duties
(B) Resigns from the company
(C) Transfer to another state
(D) At the age of 58 years
187. In water wall furnace the heat is transferred to the water wall by
(A) Convection
(B) Radiation
(C) Radiation and convection
(D) Radiation and conduction
188. Steam is the preferred medium for heating applications because:
(A) High latent heat
(B) Temperature breaks down is easy
(C) Easy to control and distribute
(D) All of the above
189. Pick the boiler, which can be considered as most combustion efficient?
(A) Fluidised bed combustion boiler
(B) Lancashire boiler
(C) Stoker-fired boiler
(D) Chain grate boiler
190. A rise in conductivity of boiler feed water indicates
(A) Drop in the contamination of feed water
(B) Greater purity of feed water
(C) The rise in the contamination of feed water
(D) It has got no relation to the contamination of feed water
191. The elements of the ultimate analysis of fuel do not include
(A) Carbon
(B) Hydrogen
(C) Oxygen
(D) Volatile matter
192. Water hammer in a steam system is caused by
(A) Collected condensate hitting obstructions
(B) Leaking pipe joints
(C) Slow moving steam
(D) The continuous slope in the direction of flow
193. Which data is not required to calculate boiler efficiency by the indirect method
(A) Steam flow rate
(B) Stack gas temperature
(C) Ambient temperature
(D) The energy content of the fuel
194. Which of the following requires the least amount of oxygen /kg for complete combustion
(A) Carbon
(B) Sulphur
(C) Hydrogen
(D) Methane
195. Which of these fuels has the highest heating value?
(A) Methane
(B) Hydrogen
(C) Diesel
(D) LPG
196. Drain pockets are provided in a steam line for
(A) Effective removal of steam
(B) Removal of dirt
(C) Checking of the steam line
(D) Effective removal of a line condensate
197. The purpose of atomisation in an oil fired burner is to
(A) Increase excess air
(B) Increase the surface area of oil
(C) Reduce power consumption
(D) Reduce the flue gas temperature
198. The difference in temperature between steam and condensate is the principle of operation in a
(A) Thermodynamic trap
(B) Thermostatic trap
(C) Orifice type trap
(D) Temperature trap
199. If the pressure of saturated steam is reduced through a pressure reducing valve
(A) It will get superheated
(B) Enthalpy will reduce
(C) It will produce wet steam
(D) Enthalpy of evaporation will reduce
200. Feed check valves are used in order to
(A) Regulate flow to the boiler
(B) Check the level of water in the boiler
(C) Recirculate feed water
(D) Allow high-pressure feed water to the boiler and not allow reverse flow
201. Which of the following is the most desirable method of pre-cleaning a test piece prior to penetrant
testing?
(A) Sandblasting
(B) Vapour degreasing
(C) Emery cloth
(D) Wire brushing
202. The coefficient of thermal expansion of refractory material should be
(A) Low
(B) High
(C) Medium
(D) Very high
(A) Satisfactory completion of the steam test
(B) Satisfactory completion of the hydraulic test in every case of registration
(C) In every case after repairing of Boiler
(D) In every case of Boiler transfer from another state into the state of Gujarat
184. In the context of BA rules 2011, Boiler shall be deemed to be not in use
(A) When it is in banked fire condition
(B) When the steam connection is closed
(C) When water connection is closed
(D) When the fire is removed and all steam and water connections are closed
185. Following is true in case of first class competency boiler attendant
(A) Can take charge of two or more boilers situated within the radius of 30 meters with a heating surface area exceeding 1000 square meter
(B) Can take charge of a single boiler having a heating surface area up to 1000 square meter
(C) Can take charge of many separate boilers situated within the radius of 30 meters in the same premises and not belong to one owner
(D) Can take charge of a single boiler having heating surface area more than 1000 square meter
186. Proficiency certificate of engineer can be canceled permanently if holder,
(A) Found guilty in allegations of negligence of duties
(B) Resigns from the company
(C) Transfer to another state
(D) At the age of 58 years
187. In water wall furnace the heat is transferred to the water wall by
(A) Convection
(B) Radiation
(C) Radiation and convection
(D) Radiation and conduction
188. Steam is the preferred medium for heating applications because:
(A) High latent heat
(B) Temperature breaks down is easy
(C) Easy to control and distribute
(D) All of the above
189. Pick the boiler, which can be considered as most combustion efficient?
(A) Fluidised bed combustion boiler
(B) Lancashire boiler
(C) Stoker-fired boiler
(D) Chain grate boiler
190. A rise in conductivity of boiler feed water indicates
(A) Drop in the contamination of feed water
(B) Greater purity of feed water
(C) The rise in the contamination of feed water
(D) It has got no relation to the contamination of feed water
191. The elements of the ultimate analysis of fuel do not include
(A) Carbon
(B) Hydrogen
(C) Oxygen
(D) Volatile matter
192. Water hammer in a steam system is caused by
(A) Collected condensate hitting obstructions
(B) Leaking pipe joints
(C) Slow moving steam
(D) The continuous slope in the direction of flow
193. Which data is not required to calculate boiler efficiency by the indirect method
(A) Steam flow rate
(B) Stack gas temperature
(C) Ambient temperature
(D) The energy content of the fuel
194. Which of the following requires the least amount of oxygen /kg for complete combustion
(A) Carbon
(B) Sulphur
(C) Hydrogen
(D) Methane
195. Which of these fuels has the highest heating value?
(A) Methane
(B) Hydrogen
(C) Diesel
(D) LPG
196. Drain pockets are provided in a steam line for
(A) Effective removal of steam
(B) Removal of dirt
(C) Checking of the steam line
(D) Effective removal of a line condensate
197. The purpose of atomisation in an oil fired burner is to
(A) Increase excess air
(B) Increase the surface area of oil
(C) Reduce power consumption
(D) Reduce the flue gas temperature
198. The difference in temperature between steam and condensate is the principle of operation in a
(A) Thermodynamic trap
(B) Thermostatic trap
(C) Orifice type trap
(D) Temperature trap
199. If the pressure of saturated steam is reduced through a pressure reducing valve
(A) It will get superheated
(B) Enthalpy will reduce
(C) It will produce wet steam
(D) Enthalpy of evaporation will reduce
200. Feed check valves are used in order to
(A) Regulate flow to the boiler
(B) Check the level of water in the boiler
(C) Recirculate feed water
(D) Allow high-pressure feed water to the boiler and not allow reverse flow
201. Which of the following is the most desirable method of pre-cleaning a test piece prior to penetrant
testing?
(A) Sandblasting
(B) Vapour degreasing
(C) Emery cloth
(D) Wire brushing
202. The coefficient of thermal expansion of refractory material should be
(A) Low
(B) High
(C) Medium
(D) Very high
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