TPC Basic Hydraulics Exam Questions and Answers

TPC Basic Hydraulics Exam Questions and
Answers




A ,hydraulic ,pipe ,designated ,as ,Scheduled ,80 ,is ,- ,(correct ,answer) ,-Extra ,Heavy
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A ,disadvantage ,of ,using ,hose ,in ,hydaulic ,systems ,instead ,of ,piping ,or ,tubingis ,that ,the ,hose ,- ,
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(correct ,answer) ,-is ,less ,permanent
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Which ,type ,of ,fitting ,should ,be ,used ,on ,a ,steel ,hydraulic ,line ,- ,(correct ,answer) ,-steel
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Pressure ,lose ,in ,a ,hydraulic ,line ,depends ,on ,the ,- ,(correct ,answer) ,-flow ,velocity
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Hydraulic ,lines ,should ,NEVER ,be ,constructed ,of ,- ,(correct ,answer) ,-Galvanized ,pipe
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Which ,type ,of ,valve ,has ,a ,round ,core ,- ,(correct ,answer) ,-Rotary
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To ,facillitate ,comparison, ,manufacturers ,rate ,the ,flow ,capacity ,of ,vavles ,by ,their ,- ,(correct
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,answer) ,-CV ,Factor
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Which ,of ,the ,following ,kinds ,of ,vavles ,should ,be ,used ,in ,hydraulic ,system ,to ,change ,the
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,direction ,of ,motion ,of ,the ,cylinder? ,- ,(correct ,answer) ,-Directional ,control ,vavle
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The ,coonsturction ,of ,a ,spool ,vavle ,causes ,it ,to ,- ,(correct ,answer) ,-Be ,partially ,balanced
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In ,applications ,using ,a ,needle ,vavle ,that ,must ,be ,shut ,off ,frequently, ,a ,________ ,should ,be
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,used ,- ,(correct ,answer) ,-sofft ,seat
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What ,characteristic ,of ,a ,fluid ,does ,the ,term ,"specific ,gravity" ,describe ,? ,- ,(correct ,answer) ,-
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Density

the ,formation ,of ,large ,air ,bubbles ,or ,pockets ,in ,a ,hydraulic ,system ,is ,known ,as ,- ,(correct
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,answer) ,-Cavitation
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The ,Law ,of ,Conservatiion ,of ,Energy ,states ,that ,energy ,cannot ,be ,created ,or ,destroyed, ,it ,can
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,only ,be ,- ,(correct ,answer) ,-Transformed
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, According ,to ,Bernoullis ,Law ,Principle, ,when ,fluid ,flow ,increases ,in ,asystem, ,the ,pressure ,- ,
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(correct ,answer) ,-Decreases kr kr




What ,type ,of ,energy ,is ,produced ,in ,a ,hydraulic ,system ,when ,the ,piston ,has ,raised ,an ,object ,to
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,a ,higher ,level ,? ,- ,(correct ,answer) ,-Potential
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Fluid ,pressure ,in ,one ,section ,of ,a ,hydraulic ,system ,is ,limited ,by ,a ,- ,(correct ,answer) ,-reducing
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,vavle
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The ,flow ,from ,the ,outlet ,of ,a ,sequence ,vavle ,is ,at ,- ,(correct ,answer) ,-Line ,pressure
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A ,meter ,out ,flow ,control ,vavle ,is ,used ,to ,regulate ,fluid ,flow ,from ,a(n) ,- ,(correct ,answer) ,-
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actuator

The ,operating ,differential ,pressure ,of ,a ,relief ,vavle ,is ,the ,difference ,between ,its ,maximum ,- ,
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(correct ,answer) ,-Cracking ,pressure kr kr kr




A ,counterbalance ,vavle ,is ,normally ,a ,_______ ,vavle ,- ,(correct ,answer) ,-double- ,poppet
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The ,ability ,of ,a ,fluid ,to ,penetrate ,into ,small ,clearances ,between ,closely ,fitted ,parts ,is
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,determined ,by ,the ,fluid's ,- ,(correct ,answer) ,-viscosity
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The ,ability ,of ,a ,hydraulic ,fluid ,to ,create ,a ,barrier ,that ,prevents ,metal ,to ,metal ,contact ,is ,called
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,its ,- ,(correct ,answer) ,-Film ,Strength
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A ,hydraulic ,fluid ,that ,exhibits ,little ,change ,in ,viscosity ,when ,heated ,is ,said ,to ,have ,a ,high ,- ,
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(correct ,answer) ,-viscosity ,index kr kr kr




A ,fluid ,rated ,at ,250 ,SSU ,has ,a ,_______ ,than ,a ,fluid ,rated ,at ,150 ,SSU. ,- ,(correct ,answer) ,-
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higher ,viscosity kr




Which ,of ,the ,following, ,when ,added ,to ,hydraulic ,fluid, ,will ,limit ,oxidation? ,- ,(correct ,answer) ,-A
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,chemical ,inhibitor
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How ,does ,an ,internal ,gear ,pump ,prevent ,the ,fluid ,from ,flowing ,through ,the ,motor? ,- ,(correct
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,answer) ,-The ,internal ,gear ,has ,fewer ,teeth ,than ,the ,external ,gear
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Vane ,motors ,made ,with ,only ,one ,motor ,chamber ,are ,called ,_______ ,motors ,- ,(correct ,answer)
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,-unbalanced
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Internal ,leakage ,inn ,hydraulic ,gear ,motor ,is ,held ,to ,a ,minimum ,by ,the ,use ,of ,- ,(correct ,answer)
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,-Wear ,plates
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In ,a ,hydraulic ,motor, ,the ,______ ,of ,the ,admitted ,fluid ,determines ,the ,torque ,output. ,- ,(correct
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,answer) ,-pressure
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