超星 - Power transmission - 查题吧

单选题

Whyiswaterunsuitabletouseasworkfluidinhydraulicsystems?

A. Poorlubrication
B. Quickevaporation
C. Moreleakage
D. Alloftheabove

单选题

Hydraulicforcecanbecalculatedby:

A. flowxdistance
B. workxtime
C. pressurexarea
D. pressurexflow

单选题

Pressureof1barisequalto

A. 1kPa
B. 10kPa
C. 100kPa
D. 1000kPa

单选题

Pressureof1barisequalto

A. 0.001MPa
B. 0.01MPa
C. 0.1MPa
D. 1MPa

单选题

Whyisfluidpowerpreferredin vehicles?

A. Largetorquedelivery
B. Overloadprotection
C. Lubricantfree
D. Alloftheabove

单选题

Whateffectdoesoverloadinghaveonfluidpowerandelectricalsystems?

A. electricalcomponentsgetdamagedinelectricalsystems
B. fluidpowersystemstopsworkingwithoutdamagingthecomponents
C. bothA.andB.
D. noneoftheabove

单选题

Inhydraulicsystems,

A. themechanicalenergyistransferredtotheoilandconvertedintoelectricalenergy
B. themechanicalenergyistransferredtotheoilandthenconvertedintomechanicalenergy
C. theelectricalenergyistransferredtotheoilandthenconvertedintomechanicalenergy
D. noneoftheabove

单选题

Whichofthefollowingisusedasacontrolcomponentinahydraulicsystem?

A. pressuregauge
B. pump
C. valve
D. reservoir

判断题

Hydraulicsystemgenerateheatduringworking.

A. 对
B. 错

判断题

Hydraulicsystemsareself-lubricated.

A. 对
B. 错

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