162. Which machine records the change in length of the specimen?
(A) Impact testing machine
(B) Universal testing machine
(C) Rockwell testing machine
(D) Lathe Machine
163. What does the turbidity in boiler feed water cause?
(A) Sludge
(B) Scale
(C) Corrosion
(D) Erosion
164. Which of the following group of devices is used for part recovery of heat from the flue through gases leaving the tube banks in a water tube boiler?
(A) Drum internals, Superheaters, Economizer
(B) Economizer, Air preheater, Electrostatic preheater
(C) A water wall, Drum internals, Superheaters
(D) Superheaters, Economizer, Air Preheater
165. Consider the following statements:
(1) Fusible plug is a device used to put off the fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
(2) The superheater is a device used to increase the temperature of saturated steam without raising its pressure.
(3) An economizer decreases the steam raising capacity of the boiler.
Which of the given statements is/are correct?
(A) Only (1) and (2)
(B) Only (2) and (3)
(C) Only (1) and (3)
(D) All (1), (2) and (3)
166. Equivalent evaporation is the amount of water evaporated in a boiler from and at
(A) 0° C
(B) 273K
(C) 100° C
(D) 212° C
167. The higher calorific value of fuel assumes that
(A) It contains H2O in liquid form
(B) It contains H2Oin vapour form
(C) It contains H2O in liquid and vapour form
(D) It ignores the presence of H2O
168. Rankine cycle efficiency of a good steam power plant may be in the range of
(A) 15 to 20%
(B) 35 to 45%
(C) 70 to 80%
(D) 90 to 95%
169. Combustible elements in the fuel are
(A) Carbon and hydrogen
(B) Carbon, hydrogen and sulphur
(C) Carbon, hydrogen and nitrogen
(D) Carbon, hydrogen and ash
170. Which of the following device is termed as boiler accessory
(A) Safety valve
(B) Relief valve
(C) Steam Stop valve
(D) Superheater
171. How much quantity of oxygen is required for complete combustion of 1 kg of carbon
(A) 3/8 kg
(B) 8/3 kg
(C) 1/2 kg
(D) 2/3 kg
172. The quantity of which boiler mounting is kept as more than one?
(A) Water level indicator
(B) Safety valve
(C) Fusible plug
(D) Both (A) & (B)
173. Following is the advantage of supercritical boilers
(A) Reduction in emission
(B) More cycle efficiency
(C) Requires no latent heat addition
(D) All of the above
174. As per the Boilers Act, 1923 (as amended in 2007), Steampipe means any pipe through which steam passes with a
(A) Steam pressure exceeds 1.0 kg/cm2gauge pressure
(B) Bore of a steam pipe exceeds 254 mm
(C) Bore of a steam pipe exceeds 254 mm and steam pressure exceed 1.0 kg/cm2(G)
(D) Bore of steam pipe exceeds 100 mm and steam pressure exceeds 0.1 kg/cm2 (G)
175. As per the Boilers Act, 1923 (as amended in 2007) Following is not a “boiler component”
(A) Superheater
(B) Economiser
(C) Air preheater
(D) Feed piping
176. As per the Boilers Act, 1923 (as amended in 2007) Boilers Act is not applicable to
(A) Government operated company
(B) Army, navy or air force
(C) Process industry
(D) Hotels
177. As per the Boilers Act, 1923 (as amended in 2007) Following conditions are to be met before manufacturing of a Boiler or boiler component
I. Facility for design and construction of boiler as per Indian Boiler Regulations 1950
II. The design and drawing of a boiler is approved by Inspecting authority
III. The material used meets the specification criteria of IBR 1950
IV. oiler welder holds valid welder certificate
(A) I only
(B) II and III
(C) I and IV
(D) I, II, III and IV
178. As per the Boilers Act, 1923 (as amended in 2007) at present Penalty for illegal use of a boiler
(A) May extend to One lakh rupees
(B) Five hundred rupees
(C) Five thousand rupees
(D) Fifty thousand rupees
179. As per Gujarat Boiler rules, 1966, following is not the specific duties of chief inspector
(A) Fix the area under the control of each inspector
(B) Sanction prosecution under the act
(C) Approve the working pressure of a newly registered boiler
(D) Maintain a memorandum of inspection book of each boiler
180. As per Gujarat Boiler rules, 1966, in which case inspector should decline to proceed for inspection and report the facts to the chief inspector
(A) Proper disconnection or isolation of boiler made
(B) The boiler is unreasonably hot or not properly cleaned and scaled
(C) The boiler registration number is engraved
(D) The boiler is in charge of a qualified engineer or attendant as required by rules
181. When a boiler is transferred from another state into the state of Gujarat
(A) The boiler can be used after receiving at site
(B) The boiler can be used after receiving a memorandum of inspection book
(C) The boiler can be used after registration has been affected by the chief inspector of boilers
(D) No need to inform the chief inspector
182. At the time of renewal of Boiler certificate
(A) The boiler must be examined internally only
(B) The boiler must be examined externally only
(C) The boiler must be examined externally as well as internally
(D) Boiler to be steam tested
(A) Impact testing machine
(B) Universal testing machine
(C) Rockwell testing machine
(D) Lathe Machine
163. What does the turbidity in boiler feed water cause?
(A) Sludge
(B) Scale
(C) Corrosion
(D) Erosion
164. Which of the following group of devices is used for part recovery of heat from the flue through gases leaving the tube banks in a water tube boiler?
(A) Drum internals, Superheaters, Economizer
(B) Economizer, Air preheater, Electrostatic preheater
(C) A water wall, Drum internals, Superheaters
(D) Superheaters, Economizer, Air Preheater
165. Consider the following statements:
(1) Fusible plug is a device used to put off the fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
(2) The superheater is a device used to increase the temperature of saturated steam without raising its pressure.
(3) An economizer decreases the steam raising capacity of the boiler.
Which of the given statements is/are correct?
(A) Only (1) and (2)
(B) Only (2) and (3)
(C) Only (1) and (3)
(D) All (1), (2) and (3)
166. Equivalent evaporation is the amount of water evaporated in a boiler from and at
(A) 0° C
(B) 273K
(C) 100° C
(D) 212° C
167. The higher calorific value of fuel assumes that
(A) It contains H2O in liquid form
(B) It contains H2Oin vapour form
(C) It contains H2O in liquid and vapour form
(D) It ignores the presence of H2O
168. Rankine cycle efficiency of a good steam power plant may be in the range of
(A) 15 to 20%
(B) 35 to 45%
(C) 70 to 80%
(D) 90 to 95%
169. Combustible elements in the fuel are
(A) Carbon and hydrogen
(B) Carbon, hydrogen and sulphur
(C) Carbon, hydrogen and nitrogen
(D) Carbon, hydrogen and ash
170. Which of the following device is termed as boiler accessory
(A) Safety valve
(B) Relief valve
(C) Steam Stop valve
(D) Superheater
171. How much quantity of oxygen is required for complete combustion of 1 kg of carbon
(A) 3/8 kg
(B) 8/3 kg
(C) 1/2 kg
(D) 2/3 kg
172. The quantity of which boiler mounting is kept as more than one?
(A) Water level indicator
(B) Safety valve
(C) Fusible plug
(D) Both (A) & (B)
173. Following is the advantage of supercritical boilers
(A) Reduction in emission
(B) More cycle efficiency
(C) Requires no latent heat addition
(D) All of the above
174. As per the Boilers Act, 1923 (as amended in 2007), Steampipe means any pipe through which steam passes with a
(A) Steam pressure exceeds 1.0 kg/cm2gauge pressure
(B) Bore of a steam pipe exceeds 254 mm
(C) Bore of a steam pipe exceeds 254 mm and steam pressure exceed 1.0 kg/cm2(G)
(D) Bore of steam pipe exceeds 100 mm and steam pressure exceeds 0.1 kg/cm2 (G)
175. As per the Boilers Act, 1923 (as amended in 2007) Following is not a “boiler component”
(A) Superheater
(B) Economiser
(C) Air preheater
(D) Feed piping
176. As per the Boilers Act, 1923 (as amended in 2007) Boilers Act is not applicable to
(A) Government operated company
(B) Army, navy or air force
(C) Process industry
(D) Hotels
177. As per the Boilers Act, 1923 (as amended in 2007) Following conditions are to be met before manufacturing of a Boiler or boiler component
I. Facility for design and construction of boiler as per Indian Boiler Regulations 1950
II. The design and drawing of a boiler is approved by Inspecting authority
III. The material used meets the specification criteria of IBR 1950
IV. oiler welder holds valid welder certificate
(A) I only
(B) II and III
(C) I and IV
(D) I, II, III and IV
178. As per the Boilers Act, 1923 (as amended in 2007) at present Penalty for illegal use of a boiler
(A) May extend to One lakh rupees
(B) Five hundred rupees
(C) Five thousand rupees
(D) Fifty thousand rupees
179. As per Gujarat Boiler rules, 1966, following is not the specific duties of chief inspector
(A) Fix the area under the control of each inspector
(B) Sanction prosecution under the act
(C) Approve the working pressure of a newly registered boiler
(D) Maintain a memorandum of inspection book of each boiler
180. As per Gujarat Boiler rules, 1966, in which case inspector should decline to proceed for inspection and report the facts to the chief inspector
(A) Proper disconnection or isolation of boiler made
(B) The boiler is unreasonably hot or not properly cleaned and scaled
(C) The boiler registration number is engraved
(D) The boiler is in charge of a qualified engineer or attendant as required by rules
181. When a boiler is transferred from another state into the state of Gujarat
(A) The boiler can be used after receiving at site
(B) The boiler can be used after receiving a memorandum of inspection book
(C) The boiler can be used after registration has been affected by the chief inspector of boilers
(D) No need to inform the chief inspector
182. At the time of renewal of Boiler certificate
(A) The boiler must be examined internally only
(B) The boiler must be examined externally only
(C) The boiler must be examined externally as well as internally
(D) Boiler to be steam tested
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