This article is about Plumbing and HVAC QC Inspector interview questions asked in Aramco Projects. Additionally this is CBT Test Questions answers also.
Plumbing and HVAC QC Interview Questions
Q.61 What is the elevated temperature for fire smoke dampers?
a) 250 Deg. F b) 100 Deg. F c) 150 Deg. F d) 90 Deg. F
Q.62 What is the standard means of SAES-S-040?
a) Saudi Aramco Water Systems b) Sprinkler and Standpipe Systems in Buildings c) Saudi Aramco Plumbing Code d) None of the above.
Q-63. The air velocity through coils shall not exceed ……….
a) 3 m/s b) 10 m/s c) 4 m/s d) 2 m/s
Q.64 What is the recommended thickness for the layer of RTR (Reinforced Thermosetting Resin) in a trench?
a) 6″ b) 8″ c) 4″ d) 2″
Q-65. What is the recommended pressure for eye washers?
a) 30 PSI b) 60 PSI c) 40 PSI d) 50 PSI
Q.66 What is the recommended height for a shower?
a) 2.0 mts b) 2.5 mts c) 1.5 mts d) Non of the above
Q.67 What is the distance and direction required for the placement of the second mixer when multiple mixers are needed in a system?
a) 22-1/2 deg b) 12-1/4 deg c) 21 deg d) Non of the above
Q.68 What is the minimum number of pressure gauges required for pressure testing?
a) Minimum of 2 Pressure Gauges b) Minimum of 1 Pressure Gauges c) Minimum of 3 Pressure Gauges d) Non of the above
Q-69. No turning vanes required if the throat radius is equal to the duct width.
a) TRUE b) FALSE
Q-70. What is the minimum delivered water temperature at an eye washer?
a) 16 deg C below ambient temperature b) 36 deg. C above ambient temperature c) 18 deg C below ambient temperature d) None of the above
Q-71. Main Duct is the duct to serve major entire flow to ??
a) Sub-main b) Variable entry c) Actual set duct d) None of the above
Q-72. What ASTM Standard and type is used for Swivel ball?
a) ASTM A743 TYPE CF3M b) ASTM A322 TYPE 4140 c) ASTM 276 TYPE 316L d) Non of the above
Q.73 What is the G.I. safety standard for hydro-test safety?
a) G.I.-002-102 b) G.I.-001-10.2 c) G.I.-002-1.11 d) Non of the above
Q.74 What is the minimum storage capacity for drinking water in Saudi Aramco facilities?
a) 14 hrs b) 24 hrs c) 8 hrs d) 12 hrs
Q.75 What is the Saudi Aramco Engineering standard for an eye washer?
a) SATIP-B-069 b) SATIP-A-069 c) SATIP-B-061 d) SATIP-B-064
Q-76. What is the spacing requirement between hydrants in medium-risk areas according to Saudi Aramco standards?
a) 60m (200fl) b) 90m (200fl) c) 80m (200fl) d) Non of the above
Q-77. What does the acronym VAV stand for?
a) Variable Air Volume b) Vertical Air Volume c) Variable Air Valve d) None of the above
Q.78 What is the height of the fixture tail piece?
a) 24″ height. b) 22″ height. c) 19″ height. d) None of the above.
Q-79. What polymer is typically used in GRE pipes?
a) Epoxy b) SEAL PRIME c) Unrestrained d) Non of the above
Q.80 How much water per flush is the maximum water consumption allowed for water closets in terms of gallons and liters?
a) 1.6-gallon 6 L b) 2.12-gallon 12 L c) 1.8-gallon 6 L d) 3.6-gallon 12 L
Read Also: Plumbing QC Questions & Answers (Aramco CBT Exam)
Answers:
| 61 | A |
| 62 | C |
| 63 | B |
| 64 | C |
| 65 | A |
| 66 | A |
| 67 | C |
| 68 | A |
| 69 | A |
| 70 | B |
| 71 | C |
| 72 | A |
| 73 | C |
| 74 | B |
| 75 | A |
| 76 | A |
| 77 | B |
| 78 | A |
| 79 | C |
| 80 | A |
Plumbing/HVAC Interview Questions Answers with Technical Reasons:
Answer:61 Explanation: A) 250 Deg. F
Fire smoke dampers are designed to prevent the spread of fire and smoke through HVAC ducts and openings in fire-rated walls and floors. They are typically required by building codes and standards to be installed in certain types of buildings and spaces, depending on the level of fire protection required.
During a fire, fire smoke dampers must be able to withstand high temperatures and prevent the spread of fire and smoke through HVAC systems. Therefore, fire smoke dampers are tested and rated to withstand elevated temperatures.
According to most building codes and standards, fire smoke dampers must be able to withstand a minimum temperature of 250 Deg. F (121 Deg. C) for a minimum of 1 hour. This means that fire smoke dampers must be able to function and prevent the spread of fire and smoke even under high-temperature conditions.
Therefore, the correct answer is A) 250 Deg. F.
Answer:64 Explanation
The answer depends on the specific application and design, but typically the layer thickness for RTR in a trench is 4 inches.
Answer:65 And the answer is: a) 30 PSI
The recommended pressure for eye washers is 30 PSI. This is to ensure a gentle flow of water that does not cause further harm to the eyes in case of an emergency.
Answer:66 The recommended height for a shower is 2.0 meters (6 feet 6 inches) from the finished floor level. Therefore, option (a) is the correct answer.
Q-67. Answer: The second mixer should be located at 21 degrees from the first mixer and in the same (clockwise) direction. Therefore, option c) 21 deg deg is the correct answer. This placement helps in ensuring the thorough mixing of different fluids in the system.
Answer:68 The minimum number of pressure gauges required for pressure testing is a) Minimum of 2 Pressure Gauges.
Answer:69 True. When the throat radius is equal to the duct width, it creates a smooth transition for the airflow and eliminates the need for turning vanes. Turning vanes are used to control the airflow direction and minimize the turbulence caused by changes in direction.
Answer:74 The minimum storage capacity for drinking water in Saudi Aramco facilities shall not be less than 24 hours.
Answer:75 The Saudi Aramco Engineering standard for eye washer is SATIP-B-069.
Answer:76 a) 60m (200fl).
According to the Saudi Aramco Fire Protection Standards (SAES-P-100), the spacing requirement between hydrants in medium-risk areas is 60m (200ft).
Answer:80 The correct answer is (a) 1.6-gallon 6 L.
This is in accordance with the United States Environmental Protection Agency’s (EPA) WaterSense program, which sets a maximum flush volume of 1.6 gallons (6 liters) for toilets. This standard helps to conserve water and reduce the environmental impact of excessive water usage.