TPC Basic Hydraulics Exam Questions and
Answers
A ,hydraulic ,pipe ,designated ,as ,Scheduled ,80 ,is ,- ,(correct ,answer) ,-Extra ,Heavy
kr kr kr kr kr kr kr kr kr kr kr kr
A ,disadvantage ,of ,using ,hose ,in ,hydaulic ,systems ,instead ,of ,piping ,or ,tubingis ,that ,the ,hose ,- ,
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
(correct ,answer) ,-is ,less ,permanent
kr kr kr kr
Which ,type ,of ,fitting ,should ,be ,used ,on ,a ,steel ,hydraulic ,line ,- ,(correct ,answer) ,-steel
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
Pressure ,lose ,in ,a ,hydraulic ,line ,depends ,on ,the ,- ,(correct ,answer) ,-flow ,velocity
kr kr kr kr kr kr kr kr kr kr kr kr kr
Hydraulic ,lines ,should ,NEVER ,be ,constructed ,of ,- ,(correct ,answer) ,-Galvanized ,pipe
kr kr kr kr kr kr kr kr kr kr kr
Which ,type ,of ,valve ,has ,a ,round ,core ,- ,(correct ,answer) ,-Rotary
kr kr kr kr kr kr kr kr kr kr kr
To ,facillitate ,comparison, ,manufacturers ,rate ,the ,flow ,capacity ,of ,vavles ,by ,their ,- ,(correct
kr kr kr kr kr kr kr kr kr kr kr kr kr
,answer) ,-CV ,Factor
kr kr kr
Which ,of ,the ,following ,kinds ,of ,vavles ,should ,be ,used ,in ,hydraulic ,system ,to ,change ,the
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,direction ,of ,motion ,of ,the ,cylinder? ,- ,(correct ,answer) ,-Directional ,control ,vavle
kr kr kr kr kr kr kr kr kr kr kr kr
The ,coonsturction ,of ,a ,spool ,vavle ,causes ,it ,to ,- ,(correct ,answer) ,-Be ,partially ,balanced
kr kr kr kr kr kr kr kr kr kr kr kr kr kr
In ,applications ,using ,a ,needle ,vavle ,that ,must ,be ,shut ,off ,frequently, ,a ,________ ,should ,be
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,used ,- ,(correct ,answer) ,-sofft ,seat
kr kr kr kr kr kr
What ,characteristic ,of ,a ,fluid ,does ,the ,term ,"specific ,gravity" ,describe ,? ,- ,(correct ,answer) ,-
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
Density
the ,formation ,of ,large ,air ,bubbles ,or ,pockets ,in ,a ,hydraulic ,system ,is ,known ,as ,- ,(correct
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,answer) ,-Cavitation
kr kr
The ,Law ,of ,Conservatiion ,of ,Energy ,states ,that ,energy ,cannot ,be ,created ,or ,destroyed, ,it ,can
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,only ,be ,- ,(correct ,answer) ,-Transformed
kr kr kr kr kr kr
, According ,to ,Bernoullis ,Law ,Principle, ,when ,fluid ,flow ,increases ,in ,asystem, ,the ,pressure ,- ,
kr kr kr kr kr kr kr kr kr kr kr kr kr kr
(correct ,answer) ,-Decreases kr kr
What ,type ,of ,energy ,is ,produced ,in ,a ,hydraulic ,system ,when ,the ,piston ,has ,raised ,an ,object ,to
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,a ,higher ,level ,? ,- ,(correct ,answer) ,-Potential
kr kr kr kr kr kr kr kr
Fluid ,pressure ,in ,one ,section ,of ,a ,hydraulic ,system ,is ,limited ,by ,a ,- ,(correct ,answer) ,-reducing
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,vavle
kr
The ,flow ,from ,the ,outlet ,of ,a ,sequence ,vavle ,is ,at ,- ,(correct ,answer) ,-Line ,pressure
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
A ,meter ,out ,flow ,control ,vavle ,is ,used ,to ,regulate ,fluid ,flow ,from ,a(n) ,- ,(correct ,answer) ,-
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
actuator
The ,operating ,differential ,pressure ,of ,a ,relief ,vavle ,is ,the ,difference ,between ,its ,maximum ,- ,
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
(correct ,answer) ,-Cracking ,pressure kr kr kr
A ,counterbalance ,vavle ,is ,normally ,a ,_______ ,vavle ,- ,(correct ,answer) ,-double- ,poppet
kr kr kr kr kr kr kr kr kr kr kr kr
The ,ability ,of ,a ,fluid ,to ,penetrate ,into ,small ,clearances ,between ,closely ,fitted ,parts ,is
kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,determined ,by ,the ,fluid's ,- ,(correct ,answer) ,-viscosity
kr kr kr kr kr kr kr kr
The ,ability ,of ,a ,hydraulic ,fluid ,to ,create ,a ,barrier ,that ,prevents ,metal ,to ,metal ,contact ,is ,called
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,its ,- ,(correct ,answer) ,-Film ,Strength
kr kr kr kr kr kr
A ,hydraulic ,fluid ,that ,exhibits ,little ,change ,in ,viscosity ,when ,heated ,is ,said ,to ,have ,a ,high ,- ,
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
(correct ,answer) ,-viscosity ,index kr kr kr
A ,fluid ,rated ,at ,250 ,SSU ,has ,a ,_______ ,than ,a ,fluid ,rated ,at ,150 ,SSU. ,- ,(correct ,answer) ,-
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
higher ,viscosity kr
Which ,of ,the ,following, ,when ,added ,to ,hydraulic ,fluid, ,will ,limit ,oxidation? ,- ,(correct ,answer) ,-A
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,chemical ,inhibitor
kr kr
How ,does ,an ,internal ,gear ,pump ,prevent ,the ,fluid ,from ,flowing ,through ,the ,motor? ,- ,(correct
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,answer) ,-The ,internal ,gear ,has ,fewer ,teeth ,than ,the ,external ,gear
kr kr kr kr kr kr kr kr kr kr kr
Vane ,motors ,made ,with ,only ,one ,motor ,chamber ,are ,called ,_______ ,motors ,- ,(correct ,answer)
kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,-unbalanced
kr
Internal ,leakage ,inn ,hydraulic ,gear ,motor ,is ,held ,to ,a ,minimum ,by ,the ,use ,of ,- ,(correct ,answer)
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,-Wear ,plates
kr kr
In ,a ,hydraulic ,motor, ,the ,______ ,of ,the ,admitted ,fluid ,determines ,the ,torque ,output. ,- ,(correct
kr kr kr kr kr kr kr kr kr kr kr kr kr kr kr
,answer) ,-pressure
kr kr