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Question

What is the main function of a direction control valve in a hydraulic system?

This question was previously asked in
RRB ALP 2025 CBT 2 Mechanic Motor Vehicle Question Paper (28-Jul-2026) (Shift 1)
The correct answer is
To control the path of fluid flow

In a hydraulic system, the primary purpose of a direction control valve is to manage the flow path of the hydraulic fluid. Let's break down the given options to understand why this is the correct choice:

  1. Option: To filter contaminants from fluid
    • This function is typically served by hydraulic filters, not direction control valves. Filters are designed to remove particles and contaminants from the fluid to prevent system damage and maintain efficiency.
  2. Option: To adjust fluid temperature
    • This is managed by heat exchangers or coolers in the hydraulic system, not by direction control valves. These components help maintain the fluid within the desired temperature range.
  3. Option: To regulate system pressure
    • Pressure control valves are used to regulate the pressure in a hydraulic system. Direction control valves, on the other hand, are focus on directing fluid flow.
  4. Option: To control the path of fluid flow
    • This is the main function of direction control valves. They determine the path taken by the hydraulic fluid, thereby controlling the operation of various actuators in the system. By changing the position of the valve, the flow can be started, stopped, or diverted.

Therefore, the correct answer is: To control the path of fluid flow.

A direction control valve can control multiple paths by using different configurations, such as two-way, three-way, or four-way valves, depending on the requirements of the hydraulic system.

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Similar Questions

  1. In a pneumatic system, why is an air receiver tank placed after the compressor and before the distribution lines?
  2. While assembling a pneumatic press, which valve type should be chosen to precisely manage the speed of the cylinder during operation?

  3. Which of the following describes the main function of a double-acting cylinder in pneumatic systems used in workshop equipment?

  4. In an electro-pneumatic control system for a workshop machine, which component directly converts electrical energy into linear mechanical motion to operate a pneumatic valve?
  5. During the assembly of a pneumatic circuit for a machine, the FRL unit is mounted upstream of all control valves. What is the purpose of placing the FRL unit at this location in a workshop's air supply line?

  6. If a pneumatic system must alternate the air supply between two actuators based on manual control, which valve classification best suits this function?

  7. What is the main reason for using a shuttle valve instead of a two-way valve in a system with two independent control points for a single actuator?

  8. In which operation would a single-acting cylinder most likely provide the greatest efficiency?

  9. In which application is an external gear pump commonly used in the field of hydraulics?

  10. A technician needs to synchronize the extension speed of two hydraulic cylinders operating under different loads. Which application of flow control valves is most effective?


Important Questions from Pneumatics and Hydraulics

  1. The study of pneumatics deals with system operated with,

  2. The hydraulic accumulator is fitted
  3. In a pneumatic system, why is an air receiver tank placed after the compressor and before the distribution lines?
  4. While assembling a pneumatic press, which valve type should be chosen to precisely manage the speed of the cylinder during operation?

  5. Which of the following describes the main function of a double-acting cylinder in pneumatic systems used in workshop equipment?

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