Basic Hydraulics Review

the hydraulic motor converts hydraulic flow into - answer-rotary shaft speed which of the following is not a type of hydraulic piston motor - answer-spring loaded which one hydraulic component may be shown many times in a schematic without indicating that there are more than one of that component - answer-vented reservoir flow rate is equal to volume divided by - answer-time which type of flowmeter must be oriented in a vertical position - answer-rotameter the rod side area that produces the pull force on a double acting cylinder is called is called the_____ area - answer-annular pascals law states that pressure in a confined fluid is equal and acts - answer-perpendicular to all surfaces the hydraulic lever provides - answer-flow multiplication pressure is created by the - answer-resistance to flow delta P is another name for - answer-pressure differential as oil is pumped through a hydraulic system it progressively - answer-drops in pressure pressure are stated as - answer-all of the above flow occurs between two connected points in a hydraulic system when - answer-a pressure differential exists the area of a circle can be calculated by - answer-all of the above the two types of relief valves used in hydraulic circuits are - answer-pilot operated and directed acting the primary purpose of a relief valve is to - answer-limit system pressure the pressure at which a relief valve actually starts to open is called - answer-cracking pressure check valves are used in hydraulic to - answer-block flow the three types of check valves used in hydraulics are - answer-ball, swing, poppet a flow control valve is a combination of a - answer-needle valve and a check valve which of the following is not a basic part of a flow control valve - answer-piston if the load on an actuator is increased, the flow through a non-compensated flow control valve controlling the actuator speed will - answer-decreasing a meter in flow control valve control the speed of an actuator by - answer-restricting the flow to the actuator a meter out flow control circuit - answer-all of the above an independent speed control circuit may be needed with a double acting cylinder because - answer-equal extend and retract speeds are needed switching between flow control valves is done in a multiple speed circuit using a ______ - answer-directional control valve to calculate extend speed of a cylinder you need to know - answer-rod diameter and flow rate in at a given rate a cylinder retracts faster then it extends because - answer-all of the above the time for a cylinder to complete its stroke can be calculated if you know the - answer-volume of the cylinder and input flow rate relief valves allow flow to bypass the system and return to the - answer-reservior sequence valves are most often used to - answer-avoid the cost of an electrical control a check valve is sometimes used with a sequence valve to - answer-allow reverse flow a check valve built into the same body with a sequence valve may be called a - answer-all of the above a blocked drain on a sequence valve will cause - answer-the valve to stay closed the purpose of a pressure reducing valve in a circuit is to - answer-drop the pressure in a branch circuit