SV Green Sheet, Hydraulics Practice Test

These questions are part of the practice quiz. Start practicing

• Which component is included in hydraulic System A?
• What does FRM stand for in the context of hydraulic systems?
• For what purpose might pilots need to manually activate the standby hydraulic system?
• What happens when the HYD PUMPS switches are placed in the ON position?
• Which of the following is a method to prevent cavitation in hydraulic systems?
• According to Pascal's Law, what happens when pressure is applied to a confined fluid?
• What initiates the automatic operation of the standby hydraulic system?
• If hydraulic System A leaks and the reservoir level drops, what is the displayed quantity?
• What type of pressure is required to maintain the operation of hydraulic machinery?
• Which component’s operation is affected by low hydraulic pressure indicated by LOW PRESSURE lights?
• Which component is essential for the transmission of hydraulic power?
• What is the fluid volume supply comparison between an engine-driven hydraulic pump and an electric motor-driven pump?
• Under what condition does the landing gear transfer unit activate to raise the landing gear?
• What can happen if the wrong hydraulic fluid is selected for a system?
• In hydraulic systems, what does a manifold enhance by consolidating functions?
• What is the main purpose of a manifold in hydraulic systems?
• What could be a consequence of continuously relying on a standby hydraulic system?
• What is a potential effect of fluid thermal expansion in a hydraulic system?
• Which of the following is essential for the effective operation of hydraulic systems in aircraft?
• How is the efficiency of a hydraulic system calculated?
• Why is it critical to identify hydraulic system leaks promptly?
• Which component is crucial for controlling the speed and direction of a hydraulic actuator?
• What is a common feature of hydraulic systems used in aircraft?
• What is a crucial element to manage in hydraulic systems to ensure efficient operation?
• What component is essential for maintaining the pressure within hydraulic systems?
• What does hydraulic power represent in terms of fluid dynamics?
• What is a relief valve designed to do in a hydraulic system?
• Which component is essential for controlling the movement in hydraulic systems?
• How is pressure typically measured in hydraulic systems?
• Hydraulic System B provides fluid for which of the following components?
• Which component is powered by hydraulic System B?
• What primary function do the autoslats serve in the hydraulic system?
• What is the basic principle that governs the operation of hydraulic systems?
• Why is it critical to choose the correct hydraulic fluid?
• How does the viscosity of hydraulic fluid generally change with temperature?
• What is a common material used in the construction of hydraulic actuators?
• What does the term 'standby hydraulic system' refer to?
• What is the function of the electric motor-driven pump in the standby hydraulic system?
• What condition indicates a leak in hydraulic System B?
• What is the primary function of a check valve in a hydraulic system?
• In hydraulic systems, what is the benefit of maintaining cleanliness in the hydraulic fluid?
• What condition must be met for the landing gear transfer unit to function properly?
• What must be true for the No. 1 engine RPM in order for the hydraulic system to function correctly?
• What is one way to accommodate for fluid thermal expansion in a closed hydraulic system?
• How often should hydraulic fluid be replaced?
• What role do additives in hydraulic fluid serve?
• What must occur for the hydraulic transfer unit to supply fluid at a normal rate?
• What is pressure drop in a hydraulic system?
• Which of the following is a key characteristic of the fluid in hydraulic systems?
• How does a hydraulic cylinder enable movement in a hydraulic system?
• What type of maintenance can help prevent wear in hydraulic systems?
• What does it indicate when the fluid in hydraulic System B drops to the top of the standpipe?
• What is required for the PTU to continue operating when System B is not functioning?
• What is the function of the landing gear transfer unit?
• What happens to System B reservoir fluid level if a leak occurs in the standby hydraulic system?
• Which hydraulic system indicates pressure levels using LOW PRESSURE lights?
• What is a primary function of the engine-driven hydraulic pump?
• What is the primary role of the landing gear transfer unit?
• What hydraulic system provides power for the landing gear transfer unit?
• What do hydraulic schematics primarily provide for hydraulic systems?
• What happens when an engine fire switch is pulled?
• What happens to fluid density as temperature increases in hydraulic systems?
• What is the primary function of hydraulic valves within a hydraulic system?
• What is the role of O-rings in hydraulic systems?
• Which system provides the hydraulic fluid for the normal brakes?
• What additional conditions are necessary to initiate automatic operation of the standby hydraulic system?
• What is the main function of an oil cooler in hydraulic systems?
• What factors are considered when choosing hydraulic system components?
• Which component is specifically powered by hydraulic System A?
• Under which conditions does the System B engine-driven pump operate to supply hydraulic fluid for the landing gear transfer unit?
• Which component associated with hydraulic System B aids in aircraft stability during flight?
• In the ON position, what do the HYD PUMPS switches do to the depressurization valve?
• What factor contributes to hydraulic resistance in a hydraulic system?
• What is the impact of leaks in a hydraulic system?
• What phenomenon occurs when vapor bubbles form in hydraulic fluid due to low pressure?
• What is the correct stabilization point for the standby hydraulic system if the reservoir decreases to zero?
• How are the hydraulic systems designated in the B737?
• What role does the power transfer unit (PTU) play in hydraulic System A?
• What might happen if the hydraulic system fails during critical maneuvers?
• What is the primary purpose of the standby hydraulic system?
• Under what condition does the power transfer unit (PTU) operate automatically in the B737-700?
• Which components are powered by hydraulic System A?
• Which of the following is a sign of hydraulic fluid contamination?
• Which hydraulic system provides fluid for the landing gear?
• What action should be taken if the hydraulic fluid levels in System B are critically low?
• What is the primary purpose of a hydraulic actuator?
• If a leak develops in the standby hydraulic system, which outcome is expected for the system?
• Hydraulic System A utilizes which component for possible manual operation?
• In what situation would the standby hydraulic system likely be activated?
• What is the consequence of hydraulic system overheating?
• What do hydraulic accumulators store for later use?
• What does the term "depressurization valve" refer to in the context of the hydraulic pump operation?
• How does hydraulic actuation differ from mechanical actuation?
• Why is it essential to maintain proper hydraulic fluid levels?
• Why is regular maintenance of hydraulic systems essential?
• What is the primary purpose of hydraulic fluid in a hydraulic system?
• What is a key advantage of using hydraulic systems in machinery?
• Which property of hydraulic fluid is most important for effective force transmission?
• How often should hydraulic fluid be changed for optimal performance?
• If the standby reservoir decreases to zero, what is the stabilizing level of System B reservoir fluid?
• Hydraulic hoses are typically composed of which materials?
• Why is it essential to consider the materials used for hoses in hydraulic systems?
• Why is it important to use hoses with a compatible pressure rating?
• What is a key benefit of hydraulic accumulators in hydraulic systems?
• Which scenario accurately describes the hydraulic conditions to operate the landing gear?
• What is the major advantage of having a standby hydraulic system?
• What does an illuminated OVERHEAT light on the hydraulic panel indicate?
• What can excessive flow rates in hydraulic systems lead to?
• When does the landing gear transfer unit operate with respect to aircraft conditions?
• What is displayed when the MFD System (SYS) switch is pushed in the flight deck?
• Why is monitoring of pressure crucial in hydraulic systems?
• What does 'bleeding a hydraulic system' help to achieve?
• What does a double-acting hydraulic cylinder do?
• What is the primary function of a hydraulic filter?
• What type of system is typically used for the primary hydraulic operation in aircraft?
• What primary function do leading edge flaps serve during aircraft operation?
• What does the redundancy of the standby hydraulic system ensure?
• Which is a function of the flight control panel related to the standby hydraulic system?
• Which type of hydraulic cylinder can provide smoother operation during positioning?
• If System B quantity indicates zero and System B pressure is lost, will the power transfer unit still operate?
• Which system is responsible for activating thrust reversers in a standby configuration?
• What condition triggers the standby rudder PCU to take over control?
• What fluid medium do hydraulic systems primarily use to transmit power?
• Which of the following types of hydraulic pumps is NOT commonly used?
• What is the main function of a hydraulic pump?
• Which system provides normal nose wheel steering?
• How can the standby hydraulic pump be activated manually?
• Which characteristic of hydraulic fluids is most affected by temperature changes?
• What can be a result of using the incorrect hydraulic fluid?
• Which factor is critical for maintaining hydraulic fluid quality?
• What initiates the need for the hydraulic system to switch to standby mode?
• What principle does a hydraulic ram operate on?
• What activates the standby electric motor-driven pump in the standby hydraulic system?
• What is hydraulic jacking commonly used for?
• What happens to a hydraulic system when air is present in the lines?
• What are functionally integrated hydraulic circuits designed to achieve?
• What is indicated when the LOW QUANTITY light activates?
• What component does the standby hydraulic system use to operate?
• What is the approximate system pressure when the hydraulic system is operating normally?
• What action triggers the illumination of the LOW QUANTITY light under STBY HYD on the flight control panel?
• What negative consequence can arise from a malfunctioning relief valve?
• How many hydraulic systems does the B737 possess?
• What indicates low hydraulic System A or B pressure to the flight controls?
• What components are powered by hydraulic System B?
• What is the result of positioning an engine HYD PUMPS switch to OFF?
• Where is the hydraulic fluid heat exchanger for hydraulic System A located?
• Why is lubrication important in a hydraulic system?
• What term describes the maximum load that a hydraulic system is engineered to handle?
• Which action implies that the standby hydraulic system is engaged?
• What happens when either FLT CONTROL switch is positioned to STBY RUD?
• Which component is powered by hydraulic System B?
• What should be monitored to evaluate a potential leak in hydraulic System A?
• What must be considered in the design of hydraulic systems to manage thermal expansion?
• What condition should the system indicate when a leak develops in hydraulic System A?
• Where is the hydraulic fluid heat exchanger for hydraulic System B located?
• What are safety considerations when working with hydraulic systems?
• What role does a hydraulic cylinder serve in a hydraulic system?
• What can excessive pressure in a hydraulic system lead to?
• What does hydraulic System A include for brake functionality?
• What hydraulic system is the power transfer unit (PTU) connected to for operation?
• What could be a consequence of not performing regular maintenance on hydraulic systems?
• How is hydraulic power typically transmitted in hydraulic systems?
• What is hydraulic system troubleshooting?
• What is the principle of operation for a hydraulic press?
• How does the diameter of a hydraulic hose affect its performance?
• What does the standby hydraulic system use to power the rudder?
• When do the LOW PRESSURE lights below the FLT CONTROL A and B switches illuminate?
• What does the illumination of a hydraulic LOW PRESSURE light signify?
• What does a flow control valve do?
• What component does the standby hydraulic system power when the ALTERNATE FLAPS master switch is positioned to ARM?
• What happens when the standby hydraulic pump is forced to provide flow?
• What does the STBY RUD ON light indicate?
• Which of the following is NOT a common type of hydraulic fluid?
• What do illuminated flight control LOW PRESSURE lights signify?
• What determines the activation of a hydraulic system during emergency situations?
• In terms of engine performance, what is critical for hydraulic systems during flight?
• The operation of the standby hydraulic system can be activated in what manner?
• Why is it important to monitor pressure changes in a hydraulic system?
• What occurs when hydraulic fluid gets overheated?
• Which system relies on an electric motor-driven pump?
• What is the main purpose of the power transfer unit (PTU) in a hydraulic system?
• Which component is controlled by the hydraulic fluid supplied by System A?
• What fluid level is considered critical for the standby system to function properly?
• What occurs under low hydraulic pressure conditions in the flight control systems?
• If both main landing gears are up and locked, how does the hydraulic system operate?