Tiêu đề Assistant Director (Boilers) QP.pdf ✅

AVG - MASTER ] 11 [ P.T.O. 101. Any person is punishable under Boilers Act 1923 for (A) Not reporting an accident (B) Tampering safety valve to render it in operative (C) Not engraving the register number (D) All of the above 102. The temperature of water used in hydraulic testing shall be (A) in between 20°C and 50°C (B) in between 30°C and 45°C (C) in between 25°C and 50°C (D) in between 35°C and 60°C 103. In order to make a tight joint between the tube and the tube sheet, (A) Use rivets (B) Thread the tubes (C) Use a self expanding tube roller (D) Use a tapered fit tube 104. What is considered good combustion for oil fired boiler? (A) 0% CO, 4% oxygen and 12% CO2 (B) 8% CO, 2% oxygen and 4% CO2 (C) 0% CO, 8% oxygen and 7% CO2 (D) 2% CO, 3% oxygen and 15% CO2 105. If a deaerating heater is used in a steam generating plant it would be located between: (A) Between the boiler feed pump and the economizer (B) Between the economizer and boiler drum (C) Between treated water supply and boiler feed pump (D) Between city water supply and treated water system 106. What is not on the name plate (Facsimile) of a boiler (A) Manufactures and works number (B) Date of hydro test (C) Maximum allowable working pressure (D) Heating value of fuel 107. Operating a boiler with a high water level in a drum will result in : (A) Carryover (B) Scaling (C) Foaming (D) Saturated steam in the drum 108. Steam at 100 psi and 500°F is considered as (A) Superheated (B) Dry saturated (C) Supersaturated (D) Wet saturated 109. The lowest point at which fuel oil will flow is called (A) Viscosity point (B) Flash point (C) Specific gravity (D) Pour point 110. What is / are the criteria for selection of material for super-heater tube? (A) It should be oxidation resistant. (B) It should be high creep resistant. (C) It should be low creep resistant. (D) It should be locally available. 111. What is the maximum temperature for which cast iron valves are permitted to be used as per IBR 1950? (A) 220°C (B) 427°C (C) 454°C (D) None of the above 112. The ratio of heat utilized in steam generation and the heat generated in furnace is known as (A) Boiler effectiveness (B) Boiler evaporative capacity (C) Boiler efficiency (D) None of the above
AVG - MASTER ] 12 [ Contd. 113. The balanced draft furnace is one which is using (A) Induced draft fan and chimney (B) Induced draft fan and forced draft fan (C) Forced draft fan and chimney (D) None of the above 114. Who is authorized to issue IBR certificates under Form II ? (A) Maker (B) Maker’s Representative (C) Inspecting Authority (D) All of the above 115. As per the Boilers act 1923, which of the following is not a “Boiler Component” (A) Superheater (B) Economizer (C) Air preheater (D) Reheater 116. Any person who uses the boiler without any certificate or order being in force, shall be _______ (A) Punishable with fine which may extend to one lakh rupees (B) Punishable with imprisonment which may extend to two years (C) Punishable with fine which may extend to rupees ten lakhs (D) Not punishable 117. The minimum thickness of boiler plate shall not be less than _______ (A) 8.0 mm (B) 12.0 mm (C) 10.0 mm (D) 6.35 mm 118. Boiler registry number is assigned by (A) Boiler manufacturer (B) Chief Inspector of Boilers (C) Inspector of Boilers (D) Boiler owner 119. For Small Industrial Boiler which of the following statements is true? (A) The fee for inspection is not required (B) The certificate of manufacture of the boiler is not required (C) Operator for these boilers is not required (D) Operator for these boilers shall be a pass in class X or equivalent 120. Minimum size for economizer relief valve (in inch) should be (A) 1” (B) 1 1⁄2” (C) 2” (D) 2 1⁄2” 121. Select appropriate option for below 1. Boiler a. Form – XIII 2. Economizer b. Form - VI 3. Welder c. Form – XI (A) 1  b, 2  a, 3  c (B) 1  b, 2  c, 3  a (C) 1  c, 2  b, 3  a (D) 1  c, 2  c, 3  b 122. In shell type boiler, mean diameter of furnace shall not exceed (A) 1700 cm (B) 1700 mm (C) 1800 mm (D) 1800 cm 123. If a boiler having Registration No. MA-XXXXX, then this boiler is registered in (A) Madhya Pradesh (B) Maharashtra (C) Manipur (D) Meghalaya
AVG - MASTER ] 13 [ P.T.O. 124. Which of the following is not considered as steam pipe as per boiler act? (A) Pipe connected with Non IBR boiler operating at 7.0 kg/cm2 (B) Turbine extraction line at 2.6 kg/cm2 (C) Pipe connected with small industrial boiler operating at 3.6 kg/cm2 (D) All of the above 125. Which of the following ash is suitable for selling? (A) Clinkers (B) Fly Ash (C) Synthetic Gypsum (D) Bed Ash 126. The engraving of boiler registry number shall not be less than _______ in depth. (A) 0.2 mm (B) 0.2 cm (C) 0.4 mm (D) 0.4 cm 127. During radiographic testing, the amount of energy reflected from discontinuity is dependent on (A) The size of the discontinuity (B) The orientation of the discontinuity (C) The type of discontinuity (D) All of the above 128. Which of the given boilers operate above critical pressure? (A) Natural circulation boilers (B) Forced circulation boilers (C) Once-through boilers (D) Water tube boilers 129. How many level indicators are there in a boiler? (A) 1 (B) 2 (C) 3 (D) 4 130. What happens due to high temperature of feed water in the economizer? (A) Fuel consumption increases (B) Fuel mechanical efficiency increases (C) Fuel consumption decreases (D) Fuel mechanical efficiency decreases 131. In the method of ‘Tilting burners in the furnace’ at what degree, the burner is tilted? (A) 10° (B) 15° (C) 30° (D) 45° 132. The cold lime-soda process softens the boiler water at _______ (A) Ambient temperature (B) Elevated temperature (C) Chilled water temperature (D) Independent of temperature 133. A fire caused by oil, gas, grease, or paint would classified as _______ fire. (A) Class A (B) Class B (C) Class C (D) Class D 134. For the safety of fuel storage, fuel oil should have (A) high flash point temperature (B) high pour point temperature (C) low ignition temperature (D) low pour point temperature 135. When the temperature of fuel oil is raised, its viscosity _______ (A) remains constant (B) reduces (C) increases (D) may increase or decrease
AVG - MASTER ] 14 [ Contd. 136. To prevent failure from pressure over the MAWP, all steam boilers must be equipped with at least _______ safety valve (A) One (B) Two (C) Three (D) Four 137. Deposits of calcium and magnesium carbonates on the boiler heating surface cause (A) Scale (B) Corrosion (C) Improved heat transfer rate (D) None of the above 138. A Ringelmann chart is used to determine _______ (A) smoke temperature (B) fuel viscosity (C) smoke density (D) fuel density 139. Boiler plates and staybolts are subjected to _______ stress (A) Shear (B) Compressive (C) Torsion (D) Tensile 140. In descending order of magnitude, the thermal conductivity of (i) Pure iron, (ii) Liquid water (iii) Saturated water vapour, and (iv) Pure aluminium can be arranged as (A) i - ii - iii - iv (B) iii - ii - i - iv (C) iv - i - ii - iii (D) iv - iii - ii - i 141. Thermal diffusivity of a substance is: (A) Inversely proportional to thermal conductivity (B) Directly proportional to thermal conductivity (C) Directly proportional to the square of thermal conductivity (D) Inversely proportional to the square of thermal conductivity 142. A furnace is made of a red brick wall of thickness 0.5 m and conductivity 0.7 W/mK. For the same heat loss and temperature drop, this can be replaced by a layer of diatomite earth of conductivity 0.14 W/mK and thickness (A) 0.05 m (B) 0.1 m (C) 0.2 m (D) 0.5 m 143. The outer surface of a long cylinder is maintained at a constant temperature. The cylinder does not have any heat source. The temperature in the cylinder will: (A) Increase linearly with radius (B) Decrease linearly with radius (C) Be independent of radius (D) Vary logarithmically with radius 144. A steel steam pipe 10 cm inner diameter and 11 cm outer diameter is covered with insulation having the thermal conductivity of 1 W/mK. If the convective heat transfer coefficient between the surface of insulation and the surrounding air is 8 W/m2K, then critical radius of insulation is: (A) 10 cm (B) 11 cm (C) 12.5 cm (D) 15 cm 145. Upto the critical radius of insulation: (A) Added insulation increases heat loss (B) Added insulation decreases heat loss (C) Convection heat loss is less than conduction heat loss (D) Heat flux decreases