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Questions and Answers
What is the primary function of the bogie in a train?
What is the primary function of the bogie in a train?
How do traction motors transmit energy to the driving axles?
How do traction motors transmit energy to the driving axles?
What role do the primary and secondary suspensions play in the bogie system?
What role do the primary and secondary suspensions play in the bogie system?
What component transmits tractive forces from the bogie to the locomotion car body?
What component transmits tractive forces from the bogie to the locomotion car body?
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Which of the following correctly describes the damping system in the bogie?
Which of the following correctly describes the damping system in the bogie?
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What is the function of yaw dampers in the bogie system?
What is the function of yaw dampers in the bogie system?
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Which braking system is NOT mentioned as being part of the WAG9 loco?
Which braking system is NOT mentioned as being part of the WAG9 loco?
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Which type of springs are used in the primary suspension of the bogie?
Which type of springs are used in the primary suspension of the bogie?
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How does the system limit lateral movement in the bogie?
How does the system limit lateral movement in the bogie?
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What is the function of guide rods in the bogie?
What is the function of guide rods in the bogie?
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What type of bogie is equipped on the WAP5 locomotive?
What type of bogie is equipped on the WAP5 locomotive?
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What feature of the WAP5 bogie helps in reducing vibrations of the locomotive body?
What feature of the WAP5 bogie helps in reducing vibrations of the locomotive body?
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How is the transverse flexibility between the car body and bogie achieved?
How is the transverse flexibility between the car body and bogie achieved?
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Which braking systems are utilized in the WAP5 locomotive?
Which braking systems are utilized in the WAP5 locomotive?
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What is the main advantage of the fully suspended traction motor in the WAP5 locomotive?
What is the main advantage of the fully suspended traction motor in the WAP5 locomotive?
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What is the configuration of the WAG9 locomotive's bogie assembly?
What is the configuration of the WAG9 locomotive's bogie assembly?
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What key advantage does the smaller wheelbase of the 2-axle bogie provide?
What key advantage does the smaller wheelbase of the 2-axle bogie provide?
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How do traction links function in the WAP5 bogie?
How do traction links function in the WAP5 bogie?
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What design feature of the WAP5 bogie aids in consistent damping force?
What design feature of the WAP5 bogie aids in consistent damping force?
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What is the primary function of the low traction bars in the WAP5 locomotive?
What is the primary function of the low traction bars in the WAP5 locomotive?
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What is the primary function of the guide rods in a locomotive?
What is the primary function of the guide rods in a locomotive?
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Which component allows lateral movement of the axle without restriction?
Which component allows lateral movement of the axle without restriction?
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What role do the secondary suspension components play in a locomotive?
What role do the secondary suspension components play in a locomotive?
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What does the 'Flexi Float' arrangement in secondary suspension allow?
What does the 'Flexi Float' arrangement in secondary suspension allow?
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Which of the following components is NOT part of the secondary suspension system?
Which of the following components is NOT part of the secondary suspension system?
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What mechanism is used for the lateral and vertical dampening in the secondary suspension?
What mechanism is used for the lateral and vertical dampening in the secondary suspension?
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Which option correctly identifies a safety feature in the bogie system?
Which option correctly identifies a safety feature in the bogie system?
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What does the secondary suspension vertical damper primarily control?
What does the secondary suspension vertical damper primarily control?
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Which component is responsible for lubricating wheel flanges?
Which component is responsible for lubricating wheel flanges?
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How does the presence of brake blocks affect the bogie system?
How does the presence of brake blocks affect the bogie system?
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What mechanism is primarily responsible for minimizing shock transmission to the locomotive underframe?
What mechanism is primarily responsible for minimizing shock transmission to the locomotive underframe?
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Which component functions to transmit tractive forces from the driving axles to the bogie frame?
Which component functions to transmit tractive forces from the driving axles to the bogie frame?
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What type of springs are utilized for the primary suspension between the axles and the bogie frame?
What type of springs are utilized for the primary suspension between the axles and the bogie frame?
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Which aspect of the bogie assembly helps to control the fore and aft movement between the axles and the bogie frame?
Which aspect of the bogie assembly helps to control the fore and aft movement between the axles and the bogie frame?
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What is the function of the vertical hydraulic dampers in the primary suspension system?
What is the function of the vertical hydraulic dampers in the primary suspension system?
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Which component is designed to restrict lateral movement of the locomotive car body?
Which component is designed to restrict lateral movement of the locomotive car body?
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What feature allows the axle to have lateral movement in the bogie system?
What feature allows the axle to have lateral movement in the bogie system?
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Which braking system allows the locomotive to remain stationary when parked?
Which braking system allows the locomotive to remain stationary when parked?
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What type of dampers control the pitch rate of the car body?
What type of dampers control the pitch rate of the car body?
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What component connects between the bogie transom and the car underframe to transmit tractive forces?
What component connects between the bogie transom and the car underframe to transmit tractive forces?
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What design feature of the WAP5 bogie enhances its ability to navigate curves at higher speeds?
What design feature of the WAP5 bogie enhances its ability to navigate curves at higher speeds?
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Which specific function does the hydraulic dampers serve in the WAP5 bogie system?
Which specific function does the hydraulic dampers serve in the WAP5 bogie system?
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What impact does the two-stage suspension of the WAP5 bogie have on locomotive performance?
What impact does the two-stage suspension of the WAP5 bogie have on locomotive performance?
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How is the braking force transferred from the WAP5 bogie to the underframe?
How is the braking force transferred from the WAP5 bogie to the underframe?
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Which component is specifically provided to cushion the lateral motion of the traction motor in the WAP5 bogie?
Which component is specifically provided to cushion the lateral motion of the traction motor in the WAP5 bogie?
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What mechanical arrangement is employed to ensure transverse flexibility in the WAP5 bogie?
What mechanical arrangement is employed to ensure transverse flexibility in the WAP5 bogie?
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What specific characteristic of the WAG9 bogie assembly supports the locomotive's weight?
What specific characteristic of the WAG9 bogie assembly supports the locomotive's weight?
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In the WAP5 locomotive, what is the primary purpose of the low traction bars?
In the WAP5 locomotive, what is the primary purpose of the low traction bars?
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What structural advantage does the 'Flexi Float' arrangement provide to the locomotive car body?
What structural advantage does the 'Flexi Float' arrangement provide to the locomotive car body?
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What is the primary role of spheribloc rubber bushes in the guide rods?
What is the primary role of spheribloc rubber bushes in the guide rods?
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Which feature contributes to the reduction of unsprung mass in the WAP5 bogies?
Which feature contributes to the reduction of unsprung mass in the WAP5 bogies?
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What is a significant advantage of having hydraulic dampers in both vertical and lateral modes in the WAP5 bogie?
What is a significant advantage of having hydraulic dampers in both vertical and lateral modes in the WAP5 bogie?
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Which component in the secondary suspension primarily contributes to vertical damping?
Which component in the secondary suspension primarily contributes to vertical damping?
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What type of suspension springs support the weight of the locomotive car body?
What type of suspension springs support the weight of the locomotive car body?
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How does the design of guide rods affect the transfer of forces to the bogie frame?
How does the design of guide rods affect the transfer of forces to the bogie frame?
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What is a characteristic feature of the secondary suspension system as described?
What is a characteristic feature of the secondary suspension system as described?
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Which element primarily ensures the rigidity and stability of the bogie assembly?
Which element primarily ensures the rigidity and stability of the bogie assembly?
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In what way do wheel flange lubrication reservoirs contribute to the performance of the bogie?
In what way do wheel flange lubrication reservoirs contribute to the performance of the bogie?
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What function do the safety chains serve in the bogie system?
What function do the safety chains serve in the bogie system?
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What critical function does the bogie perform in relation to track vibrations?
What critical function does the bogie perform in relation to track vibrations?
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What is the role of the low traction bar in the bogie system?
What is the role of the low traction bar in the bogie system?
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Which component in the bogie helps control lateral movement?
Which component in the bogie helps control lateral movement?
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What type of suspension is located between the axles and the bogie frame?
What type of suspension is located between the axles and the bogie frame?
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What is the purpose of the vertical hydraulic dampers in the primary suspension?
What is the purpose of the vertical hydraulic dampers in the primary suspension?
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What is a key feature of the 'Flexicoil' arrangement in the bogie?
What is a key feature of the 'Flexicoil' arrangement in the bogie?
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Which braking system is included in the WAG9 locomotive?
Which braking system is included in the WAG9 locomotive?
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What is controlled by yaw dampers in the bogie system?
What is controlled by yaw dampers in the bogie system?
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Which component limits the amount and rate of vertical rebound of the locomotive car body?
Which component limits the amount and rate of vertical rebound of the locomotive car body?
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What type of bogies does the WAP5 locomotive utilize?
What type of bogies does the WAP5 locomotive utilize?
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What is the role of hydraulic dampers in the WAP5 bogie system?
What is the role of hydraulic dampers in the WAP5 bogie system?
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Which braking system is included in the WAP5 locomotive design?
Which braking system is included in the WAP5 locomotive design?
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What advantage does the flexi-float suspension provide in the WAP5 bogie?
What advantage does the flexi-float suspension provide in the WAP5 bogie?
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How does the design of the WAP5 bogie contribute to higher speed capabilities?
How does the design of the WAP5 bogie contribute to higher speed capabilities?
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What controls the lateral motion of the traction motor in the WAP5 bogie?
What controls the lateral motion of the traction motor in the WAP5 bogie?
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Which design feature of the WAP5 bogie helps in dampening lateral vibrations?
Which design feature of the WAP5 bogie helps in dampening lateral vibrations?
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What is the primary function of the traction and braking forces in the WAP5 locomotive?
What is the primary function of the traction and braking forces in the WAP5 locomotive?
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What special design feature is implemented in the hydraulic dampers of the WAP5 bogie?
What special design feature is implemented in the hydraulic dampers of the WAP5 bogie?
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What is a unique characteristic of the WAG9 locomotive's bogie assembly?
What is a unique characteristic of the WAG9 locomotive's bogie assembly?
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What type of bushes are used in the guide rods to allow lateral movement of the axle?
What type of bushes are used in the guide rods to allow lateral movement of the axle?
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Which component of the secondary suspension is responsible for vertical damping?
Which component of the secondary suspension is responsible for vertical damping?
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What does the 'Flexi Float' arrangement in secondary suspension allow the car body to do?
What does the 'Flexi Float' arrangement in secondary suspension allow the car body to do?
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Which component connects the axle journal boxes to the bogie frame for longitudinal control?
Which component connects the axle journal boxes to the bogie frame for longitudinal control?
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What primary function do coil springs serve in the bogie system?
What primary function do coil springs serve in the bogie system?
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Which component is used to dampen the lateral movement in the secondary suspension?
Which component is used to dampen the lateral movement in the secondary suspension?
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Which design feature enhances the comfort level of the locomotive during movement?
Which design feature enhances the comfort level of the locomotive during movement?
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What primary role do hydraulic dampers serve in the bogie system?
What primary role do hydraulic dampers serve in the bogie system?
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Which component helps prevent excessive movements of the vehicle during dynamic operations?
Which component helps prevent excessive movements of the vehicle during dynamic operations?
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What is the primary purpose of a sanding box in the bogie assembly?
What is the primary purpose of a sanding box in the bogie assembly?
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Study Notes
Bogie Design Features
- WAP5 locomotives use 2-axle, bolster-less Bo-Bo bogies with fully suspended traction motors. This reduces unsprung mass.
- The bogie has two suspension stages. The loco body rests on secondary helical springs on long bogie beams. The bogie frame is supported by primary helical springs on the axle boxes.
- Secondary helical springs provide transverse flexibility between the car body and bogie.
- Hydraulic dampers are used to reduce locomotive body vibrations in vertical and lateral modes. Dampers are placed between the underframe and bogie frame (secondary) and between axle boxes and bogie frame (primary). Longitudinal dampers provide constant damping force. Dampers on each traction motor cushion lateral motor motion.
- Traction links transfer traction forces from the axle to the bogie frame. Traction and braking forces are transmitted from the bogie to the underframe through traction bars, connected near the centre of the underframe for improved riding.
- WAP5 locomotives use automatic train brake, direct loco brake, parking brake, and anti-spin brake. Braking effort is transferred to the bogie frame by axle journal boxes and guide rods, then to the locomotive by traction rods. Disc brakes improve braking efficiency for high-speed operation.
WAG9 Locomotive Bogie
- The WAG9 locomotive uses a 3-axle, 3-motor Co-Co bogie assembly.
- The bogie assembly supports the locomotive's weight and transmits tractive effort to the rails.
- The bogie design is robust to withstand stress and vibrations from normal rolling stock use.
- The bogie's suspension system minimizes vibration transfer to the locomotive underframe.
- Traction motors are suspended in the bogie frame and on individual axles; they transmit energy to the driving axles.
- Twin coil springs, with vertical hydraulic dampers, form the primary suspension between the axles and the bogie frame, permitting lateral axle movement.
- Secondary coil springs and vertical hydraulic dampers provide suspension between the bogie frame and the locomotive underframe.
- This 'Flexi-Float' arrangement allows lateral and vertical movement of the locomotive body relative to the bogies within limits.
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Description
This quiz covers the key design features of the Bo-Bo bogies used in WAP5 locomotives. Explore the suspension systems, dampers, and traction elements that contribute to the performance and stability of these locomotives. Test your knowledge on how these design aspects reduce vibrations and improve ride quality.
