3-30.A hydraulic pressure regulatordoes which of the following?1.Maintains the system pressurebetween two predeterminedlevels2.Regulates the quantity offluid flow in the system3.Maintains the system pressureabove a predeterminedpressure level4.Maintains the system pressurebelow a predeterminedpressure level3-31.Chatter of a pressure regulatormay be prevented by1.using a constant displacementpump2.installing a snubber in thefluid supply line3.maintaining a very smalldifferential pressure4.making cutout (closing)pressure higher than cutin(opening) pressureREFER TO FIGURE 6-14 IN YOUR TEXTBOOK INANSWERING QUESTIONS 3-32 AND 3-33.3-32.What is the operational state ofthe regulator when the systempressure is less than thatrequired to operate one of theactivating units in the system?1.The pilot valve is seated,the check valve is unseated,and fluid is flowing into thesystem2.The pilot valve is unseated,the check valve is seated,and fluid is flowing into thesystem3.The check valve is unseated,the pilot valve is seated,and fluid is flowing into thereturn line4.The check valve is unseated,the pilot valve is unseated,and fluid is flowing into thesystem and into the returnline3-33.3-34.3-35.For the pressure-controlledsequence valve to operateproperly, the tension of thespring must be sufficient to holdthe piston in the closed positionagainst pressure required tooperate the primary unit.1.True2.FalseRefer to figure 6–17 in yourtextbook.Under what conditiondoes the valve operate as aconventional check valve?1.Any time pressure in port Ais greater than the pressurein port B2.Any time the pressures inport A and port B are equal3.Only when the plunger isdepressed4.Only when the plunger isreleasedRefer to figure 6-18 in yourtextbook.The valve decreasesfluid flow when which of thefollowing conditions exist(s)?1.The pressure in the outletport exceeds the adjustingspring pressure2.The pressure in the inletport exceeds the pressuredesired in the outlet port3.The pressure on the valvediaphragm moves the valvestem up to close the valve4.All of the aboveREFER TO FIGURE 6-19 IN YOUR TEXTBOOK INANSWERING QUESTIONS 3-36 AND 3-37.3-36.If the input pressure of theinlet port is less than thesetting of the pressure reducingvalve, what should be therespective positions of thepoppet valve and the spool valve?1.Open, open2.Open, closed3.Closed, closed4.Closed, open3-37.A restriction in the drain wouldcause the outlet port pressure to1.pulsate2.increase3.decrease4. remain the same19
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