This article is about HVAC QC Inspector Aramco CBT Questions as international codes and standards for saudi aramco projects. All Answers are given below at the end of page.
HVAC QC Inspector Aramco CBT Questions
101. What is the minimum equipment concrete mounting Pad height on paved flooring?
a. 100mm b. 150mm c. 200mm d. 120mm e. None of the above
102. All catch basin shall be equipped with water seal that minimum of……
a. 150 mm b. 200mm c. 300mm d. 400mm e. None of the above
103. Vents shall be a minimum nominal pipe diameter of…..
a. 150mm b. 100mm c. 80mm d. 120mm e. None of the above
104. The maximum building supply pipe shall be nominal diameter of………..
a. 20mm OD b. 40mm OD c. 25mm OD d. 65mm OD e. None of the above
105. What should be the thickness of concrete pad from ground level on which water heater will be installed?
a. 2 inches b. 3 inches c. 4 Inches d. No need of concrete support e. None of the above
106. An approved tank or pit which receives sewage or liquid waste and which is located below the normal grade of the gravity system and which must be emptied by mechanical means is called as
a. Septic tank b. Seepage pit c. Sump d. Sand interceptor e. Pressure breaking manhole
107. Retaining angles must overlap structure opening 1 inch minimum and cover cor- ners of openings
a. 1 Inch b. 2 Inch c. 1.5 Inch d. 3 Inch e. None of the above
108. A vent which also serves as a drain is …….?
a. Wet Vent b. Multi Vent c. Open Vent d. Twin Vent e. None of the above
109. What is VAV?
a. Ventulated Air Volume b. Variable Air Volume c. Variance of Actual Volume d. None of the above
110. Toe wall have minimum height of ………
a. 150mm b. 200mm c. 250mm d. 280mm e. None of the above
111. Joints in copper tubing shall be made by the appropriate use of approved copper or copper alloy fittings such joints are called as
a. Soldered joints b. Wiped joints c. Solvent cement plastic pipe joints d. Fabricated joints e. None of the above
112. Which is the standard for the installation of air conditioning and ventilation systems?
a. UNIFORM BUILDING CODE b. NFPA 90A c. STANDARD MECHANICAL CODE
d. Southern Building Code Congress International e. None of the above
113. What is Aspect Ratio?
a. Ratio between ht n width of the duct b. Ratio between ht n length of the duct
c. Ratio between ht n length of the Room d. Ratio between actual & Design length of the duct
114. What are the temperature & RH required for human comfort?
a. 22±2 Deg.c & 50% b. 26±2 Deg.c & 50%
c. 22±2 Deg.c & 60% d. 20 Deg.c & 40%
e. None of the above
115. Volume dampers shall be located minimum of ……. Duct sizes away from the fittings
a. Three b. Two c. One d. Four e. None of the above
116. What is the minimum horizontal and vertical clearance of the exhaust outlet from any air intake?
a. 1m Above & 3m away b. 1m Away & 3m above
c. 1.2m Above & 3m away d. 1.2m Above & 2m away
e. None of the above
117. A sewer line shall be separated from the parallel potable water lines by a minimum of…..
a. 250mm b. 300mm c. 400mm d. 500mm e. None of the above
118. The lip drain funnel shall be elevated above the ground of……
a. 80mm b. 70mm c. 50mm d. 120mm e. None of the above
119. Pipe and fittings are permitted for used in hot water service where the maximum hot water temperature does not exceed of………
a. 180’F b. 120’F c. 160’F d. 210’F e. None of the above
120. Minimum distance between two fixtures is
a. 25 Inches b. 30 Inches c. 15 Inches d. 20 Inches e. None of the above
121. A device that prevents excessive vacuum in a pressure vessel is ……….
a. Vacuum Breaker b. Vacuum Relief Valve c. Pressure reliefe valve d. Bleeding Valve
e. None of the above
122. What is CFM?
a. Centralized Fan motor b. Controlled Fan Module c. Cubic Feet Meter d. None of the above
123. The test joint shall be hydro tested at least 1.5 times the minimum pressure of piping, but not less than………..
a. 110 psi b. 150 psi c. 160 psi d. 180 psi e. None of the above
124. NO. Bend shall be more than from the clean out of………..
a. 15.2M b. 20.4M
c. 10.6M d. 20M
e. None of the above
125. Any joint or seam obtained by the joining of metal parts in the plastic molten state is called as
a. Welded Joint b. Threaded Joint c. Brazed joint d. Brazed joint e. Soldered joint
126. What is TON ???
a. Amount of Output b. Amount of energy to freeze/melt c. Turn Off Nut Method
d. Total Capacity of system e. None of the above
127. What are the different method Used for duct sizing?
a. Equal Friction b. Velocity c. Static Regain d. All above e. None of the above
128. Fire dampers shall be accordance with ???
a. UL 555S b. UL 555 c. UL505 d. UL 235 e. None of the above
129. What is the maximum allowable length of a flexible duct?
a. 1m b. 1.5m c. 2m d. 1.2m e. None of the above
130. What should be the height of header from where water will be filled for drainage leak test?
a. 3m b. 4m c. 3.5m d. 2m e. None of the above
131. A separate steel member or members used to join dampers in a multiple damper opening, either horizontally or vertically
a. Mullion, Damper b. Radiation Damper c. Occupancy Separation d. Smoke Barrier e. None of the above
132. In a smoke control system acceptance testing, which one is most important
a. Component testing b. Functional testing c. Performance testing All above d. Documentation
133 Scupper openings shall be a maximum of ………… high
a. 25.4mm b. 32mm c. 40mm None of the above d. 65mm
134. Underground parallel water supply and firewater piping shall have a minimum horizontal clear distance of
a. 10 in b. 12 in c. 15 in d. 18 in e. None of the above
135. Volume of air measured in ??
a. Cubic meter b. Cubic litres c. Cubic meter per Minute d. Pound square Inch
e. None of the above
136. Ovel shapes also normally used for ducting
a. FALSE, b. TRUE,
c. None of the above d. 0
137. What is the minimum distance of an exhaust outlet from any openable windows or door?
a. 600mm b. 800mm c. 1500mm d. 1200 mm e. None of the above
138. Geo textile should over lap a minimum of………
a. 200mm b. 150mm c. 300mm d. 250mm e. none of the above
139. CPVC pipes and fittings are used for
a. Cold water system out side the building b. Only for hot water system
c. For both hot and cold water system d. Not permitted for use
e. cold water system inside the building
140. The maxi mum force required to open a stair door under maxi- mum stair pressure conditions should be limited to …………
a. 80 lbf b. 20 lbf c. 30 lbf d. 40 lbf e. None of the above
141. Joints from copper tubing to threaded pipe shall be made by the use of ………………
a. Brass adapter fittings b. CPVC adapter fittings c. GI adapter fittings d. Brace weld e. None of the above
142. Untreated household waste water which has not come into contact with toilet waste is called ……………..
a. Graywater b. Drain water
c. waist water d. kitchen waist water e. None of the above
143. A wall of fire-rated construction which serves to divide the floor area of a building into acceptable area limits
a. Fire wall b. Area Separation Wall c. Divider wall d. Breaker Wall
e. None of the above
144. Ducts shall not pass through firewalls or fire partitions
a. TRUE, b. FALSE,
c. Partially d. None of the above e.
145. Metal drain pans shall be of ………. coated galvanized steel
a. G−110 b. G−98 c. G−90 d. G−120 e. None of the above
146. Grills are only 2way and 4way type ???
a. FALSE b. TRUE c. None of the above d. 0
147. What is the part on the refrigeration system that is designed to liquefy refrigerant vapour by the removal of heat??
a. Expansion Valve b. Compressor c. Condenser d. Evaporator e. None of the above
148. What is a full-radius or long sweep elbow?
a. Inside radius is less than width of the duct b. Inside radius is greater than width of the duct
c. Inside radius is equal to the width of the duct d. Inside radius is twice the width of the duct
e. None of the above
149. Gasket, O-Rings and lacking keys be stored flat on racks below of………….
a. 32C b. 38C
c. 35C d. 23C
e. None of the above
150. The maximum drove of catch basin from high point of paving shall be……..
a. 200mm b. 250mm c. 150mm d. 300mm e. None of the above
Answers:
| 101 | A |
| 102 | A |
| 103 | B |
| 104 | C |
| 105 | B |
| 106 | C |
| 107 | A |
| 108 | A |
| 109 | B |
| 110 | A |
| 111 | A |
| 112 | B |
| 113 | B |
| 114 | A |
| 115 | B |
| 116 | A |
| 117 | B |
| 118 | A |
| 119 | C |
| 120 | B |
| 121 | B |
| 122 | C |
| 123 | B |
| 124 | A |
| 125 | A |
| 126 | B |
| 127 | D |
| 128 | B |
| 129 | B |
| 130 | A |
| 131 | A |
| 132 | E |
| 133 | A |
| 134 | B |
| 135 | C |
| 136 | B |
| 137 | C |
| 138 | A |
| 139 | C |
| 140 | C |
| 141 | A |
| 142 | A |
| 143 | B |
| 144 | A |
| 145 | C |
| 146 | A |
| 147 | C |
| 148 | A |
| 149 | B |
| 150 | A |
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