2: Which organization is responsible for developing standards related to industrial valves?
30s
ANSI (American National Standards Institute)
ISO (International Organization for Standardization)
ASTM (American Society for Testing and Materials)
API (American Petroleum Institute)
3: In a ________ offset butterfly valve, the disc is offset from the centerline of the valve body.
30s
Double Offset BFV
Single Offset BFV
Triple Offset BFV
Segmented Ball Valve
4: Standard that provides guidelines for testing the fugitive emissions performance of valves
30s
ISO 15848
API 598
MSS SP61
ASME B16.34
5: LDAR is a program aimed at identifying and mitigating fugitive emissions in industrial facilities. What does LDAR stand for?
30s
Leak Detection and Repair
Low Density Area Regulation
Leak Detection and Reduction
Loss Data and Analysis Reporting
6: Which condition is most likely to cause cavitation in a control valve
30s
High Pressure Drop
High Velocity
High Flowrate
Incorrect Material
7: Which type of valve is best for on/off control without pressure drop?
30s
Gate valve
Globe valve
Butterfly Valve
Ball valve
8: What is the maximum noise level for continuous exposure in many industrial settings in dB(A)
30s
80
85
90
95
9: The phenomenon of formation and collapse of vapor bubbles in a liquid due to pressure is
30s
Cavitation
Boiling
Evaporation
Pressure induced boiling
10: Which material is commonly used for valve bodies in high-temperature applications
30s
PVC
Graphite
Stainless Steel
Carbon Steel
11: What type of valve is typically used to prevent backflow in a piping system
30s
Ball valve
Knife Gate Valve
Check valve
Butterfly valve
12: The standard that provides pressure- temperature ratings of valves is
30s
ASME B16.34
ASME B16.20
ASME B36.10
ASME B16.5
13: What is the max flange size available in ASME B16.5 (Flange standard)
30s
22"
24"
26"
28"
14: Why is breakout torque usually higher than run torque?
30s
Due to friction and static forces that need to be overcome
Because valves are designed to resist motion
Because of fluid dynamics
Because of the weight of the valve, bearing, packing, world etc
15: Which of the following factors can affect the run torque of a valve?
30s
Valve type
Fluid pressure
Temperature
All of the above
16: Which actuator type is commonly used when a fail-safe position is required
30s
Hydraulic actuator
Pneumatic actuator
Electric actuator
Spring return actuator
17: Which process is known for creating a metallurgical bond between materials?
30s
Electroplating
Cladding
Painting
Anodizing
18: Which fugitive emission class is the most stringent according to ISO 15848-1?
30s
Class A
Class B
Class C
Class IV
19: Valves tested under ISO 15848-1 must undergo which tests?
30s
Thermal & Mechanical
Fatigue
Thermal
Lifecycle
20: What is the primary method for testing fugitive emissions in valves as per ISO 15848-1
30s
Hydrostatic shell Test
Hydrostatic seat Test
Helium leak test
Visual Inspection
21: Fugitive emissions are measured in terms of leakage rate per _______
30s
Stem/Shaft length
seat material
Stem material
surface roughness
22: The pressure class rating of a valve is irrelevant to the material it is made from.
30s
True
False
23: Why might a valve be assigned a Limited Class Rating
30s
Fulfilling requirements of ASME B16.34 Special section8
Because of additional safety margins
Due to the specific limitations of design under certain conditions
The type of material used
24: What does the pressure class rating of a valve indicate
30s
The size of the valve
The maximum operating temperature
The maximum allowable pressure at a specific temperature
The type of material used
25: When is First Article Inspection / SAL ( sample approval ) typically performed
30s
Against every purchase order
When the part is created/revised/reworked on
on engineering demand
on Quality's demand
26: Which analysis would you primarily use to ensure the valve body can withstand the internal pressures without failing?
30s
CFD
FEA
Volumetric analysis
Thermal analysis
27: Why might you choose a triple offset butterfly valve over a traditional butterfly valve?
30s
Because it is cheaper
For its frictionless operation and bubble-tight shutoff
Because it operates at lower pressures
for it's simple design
28: Which of the following describes the three offsets in a triple offset butterfly valve
30s
Seat offset, shaft offset, and disc offset
Disc offset, pressure offset, and temperature offset
Seat offset, shaft offset, and bore offset
All of the above
29: In hydrostatic shell testing, the valve is subjected to pressure that is typically tested to _____
30s
110% Rated pressure
150% Rated pressure
120% Rated pressure
ASME B16.34 Rated pressure
30: Seat leak testing often categorizes leakage rates according to
30s
ANSI/FCI 70-2
ASME B36.19
ASME B16.20
ASME B16.11
31: What is a key consideration when designing and testing cryogenic valve
30s
High-pressure capability
High-temperature resistance
Low-temperature operation and prevention of leakage
Resistance to chemical corrosion
32: What is the primary application for knife gate valves
30s
Regulating flow in high-pressure gas pipelines
Isolate and control slurry and viscous media in industrial applications
Managing flow in low-temperature water system
Managing steam flow in power plant
33: You need an actuator for a valve in a high-pressure steam system that requires rapid cycling. Which type of actuator would you choose
30s
Spring return actuator, for its fail-safe operation
Electric actuator, for its precision and remote control
Piston actuator, for its capability to handle high-pressure systems
Manual actuator, for its simplicity
34: Which type of actuator is best suited for remote control and precise positioning of a valve
30s
Spring return actuator
Pneumatic actuator
Piston actuator
Electric actuator
35: In a mining application, a slurry valve is showing signs of wear due to abrasive materials. What material enhancement could be considered for improved performance
30s
Plastic liners
Soft rubber coatings
Hard-faced alloys or ceramic linings
Stainless steel only
36: In a standard ball valve, how does the ball position affect flow direction
30s
Flow is allowed only when the ball is perpendicular to the flow
Flow is blocked when the ball is parallel to the flow
Flow is unrestricted in both positions
Flow is only allowed when the valve is fully open
37: What is typically used to create a seal between the ball and the valve body in a ball valve