142. RLA stands for
(A) Remnant Life Audit
(B) Reserve Life Audit
(C) Remnant Life Assessment
(D) Repairing Life Audit
143. For shell type boiler max permitted working pressure is reduced by 5% when it attains the age of
(A) 20 years
(B) 25 years
(C) 50 years
(D) 15 years
144. If electric light is used inside a boiler shell or drum voltage shall not exceed
(A) 220 volts
(B) 110 volts
(C) 24 volts
(D) 60 volts
145. The maximum outlet water temperature of the economiser of the high-pressure boiler shall be at least
(A) 40° F below the superheated steam temp
(B) 25° F below the superheated steam temp
(C) 25° F below the saturated steam temp in the boiler drum
(D) 40° F below the saturated steam temp in the boiler drum
146. Boilers constructed to class I requirement shall be stress relieved by heat treatment when
(A) Any plate is 18 mm thick
(B) The carbon content of the steel is 0.20%
(C) Alloy steel material is used in boiler construction
(D) Any plate is 16 mm thick
147. Manholes of oval type shall be arranged such that
(A) Major axis to be parallel with a longitudinal centerline of boiler
(B) Minor axis to be parallel with a longitudinal centre line of boiler
(C) Centre of the manhole is offset to the longitudinal centre line of boiler
(D) Can be arranged any way
148. The maximum thickness of the plate for the corrugated furnace is
(A) 18 mm
(B) 20 mm
(C) 22 mm
(D) 24 mm
149. Welder engaged in welding of the boiler must possess a certificate in Form XIII issued by
(A) University
(B) Inspecting authority
(C) Board of Examiners
(D) Competent authority
150. Steel plates for a boiler are not be produced by
(A) Open hearth process
(B) Electric furnace
(C) Basic oxygen process
(D) Basemar process
151. Minimum Boilerplate thickness specified in IBR 1950 is
(A) 1/4 inch
(B) 1/2 inch
(C) 3/8 inch
(D) 3/4 inch
152. Indian Boiler regulation is applicable to boilers working on the principle of
(A) Natural circulation
(B) Forced circulation
(C) Forced flow with no fixed steam and water line
(D) All of the above
153. Following statement is not true for Heat Rate
(A) It is the amount of heat added to produce a unit amount of work
(B) It is inversely proportional to efficiency
(C) It is directly proportional to efficiency
(D) It reflects fuel economics
154. Which of the following statement is not true
(A) The density of the saturated water in the downcomers is greater than the density of the two-phase mixture in the risers
(B) The steam drum is provided in the once-through boiler to separate steam from boiling water
(C) Full boiling to 100 percent quality in water tube is avoided because it would lead to tube burnout or failure
(D) The latent heat value is zero at critical pressure
155. Following is centrifugal separation device used in the steam drum
(A) Turbo separators
(B) Baffle plates
(C) Screen tubes
(D) All of the above
156. The primary reason to add limestone with coal Fluidised bed combustion boiler is
(A) To lower the furnace temperature
(B) To increase the thermal efficiency
(C) To absorb SO2
(D) None of the above
157. With reference to demenaralisation process which one is not true
(A) It is the process of removing dissolved solids
(B) It is the process of removing suspended solids
(C) Cation resins are positively charged hydrogen ions
(D) Anion resins are negatively charged hydroxide ions
158. The term DWDI with respect to Radiography testing means
(A) Dwell diameter
(B) Double wall dwell image
(C) Double wall double image
(D) Dwell wall double image
159. For a boiler operating at a pressure of 130 kg/cm2, following Repairer is to be employed
(A) Class I repairer
(B) Class II repairer
(C) Class III repairer
(D) Special Class repairer
160. The steam power plant operates on
(A) Carnot cycle
(B) Brayton cycle
(C) Rankine cycle
(D) Sterling cycle
161. In reference to radiography testing, an IQI is used to determine the:
(A) Size of a discontinuity in the part
(B) The density of the film
(C) Radiographic contrast
(D) Quality of the radiographic image
(A) Remnant Life Audit
(B) Reserve Life Audit
(C) Remnant Life Assessment
(D) Repairing Life Audit
143. For shell type boiler max permitted working pressure is reduced by 5% when it attains the age of
(A) 20 years
(B) 25 years
(C) 50 years
(D) 15 years
144. If electric light is used inside a boiler shell or drum voltage shall not exceed
(A) 220 volts
(B) 110 volts
(C) 24 volts
(D) 60 volts
145. The maximum outlet water temperature of the economiser of the high-pressure boiler shall be at least
(A) 40° F below the superheated steam temp
(B) 25° F below the superheated steam temp
(C) 25° F below the saturated steam temp in the boiler drum
(D) 40° F below the saturated steam temp in the boiler drum
146. Boilers constructed to class I requirement shall be stress relieved by heat treatment when
(A) Any plate is 18 mm thick
(B) The carbon content of the steel is 0.20%
(C) Alloy steel material is used in boiler construction
(D) Any plate is 16 mm thick
147. Manholes of oval type shall be arranged such that
(A) Major axis to be parallel with a longitudinal centerline of boiler
(B) Minor axis to be parallel with a longitudinal centre line of boiler
(C) Centre of the manhole is offset to the longitudinal centre line of boiler
(D) Can be arranged any way
148. The maximum thickness of the plate for the corrugated furnace is
(A) 18 mm
(B) 20 mm
(C) 22 mm
(D) 24 mm
149. Welder engaged in welding of the boiler must possess a certificate in Form XIII issued by
(A) University
(B) Inspecting authority
(C) Board of Examiners
(D) Competent authority
150. Steel plates for a boiler are not be produced by
(A) Open hearth process
(B) Electric furnace
(C) Basic oxygen process
(D) Basemar process
151. Minimum Boilerplate thickness specified in IBR 1950 is
(A) 1/4 inch
(B) 1/2 inch
(C) 3/8 inch
(D) 3/4 inch
152. Indian Boiler regulation is applicable to boilers working on the principle of
(A) Natural circulation
(B) Forced circulation
(C) Forced flow with no fixed steam and water line
(D) All of the above
153. Following statement is not true for Heat Rate
(A) It is the amount of heat added to produce a unit amount of work
(B) It is inversely proportional to efficiency
(C) It is directly proportional to efficiency
(D) It reflects fuel economics
154. Which of the following statement is not true
(A) The density of the saturated water in the downcomers is greater than the density of the two-phase mixture in the risers
(B) The steam drum is provided in the once-through boiler to separate steam from boiling water
(C) Full boiling to 100 percent quality in water tube is avoided because it would lead to tube burnout or failure
(D) The latent heat value is zero at critical pressure
155. Following is centrifugal separation device used in the steam drum
(A) Turbo separators
(B) Baffle plates
(C) Screen tubes
(D) All of the above
156. The primary reason to add limestone with coal Fluidised bed combustion boiler is
(A) To lower the furnace temperature
(B) To increase the thermal efficiency
(C) To absorb SO2
(D) None of the above
157. With reference to demenaralisation process which one is not true
(A) It is the process of removing dissolved solids
(B) It is the process of removing suspended solids
(C) Cation resins are positively charged hydrogen ions
(D) Anion resins are negatively charged hydroxide ions
158. The term DWDI with respect to Radiography testing means
(A) Dwell diameter
(B) Double wall dwell image
(C) Double wall double image
(D) Dwell wall double image
159. For a boiler operating at a pressure of 130 kg/cm2, following Repairer is to be employed
(A) Class I repairer
(B) Class II repairer
(C) Class III repairer
(D) Special Class repairer
160. The steam power plant operates on
(A) Carnot cycle
(B) Brayton cycle
(C) Rankine cycle
(D) Sterling cycle
161. In reference to radiography testing, an IQI is used to determine the:
(A) Size of a discontinuity in the part
(B) The density of the film
(C) Radiographic contrast
(D) Quality of the radiographic image
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