C of Q 310T Engine Prep Questions And
Answers
1. vWhich vof vthe vfollowing vaccurately vdescribes vengine vdisplacement?!
a. vTotal vpiston vswept vvolume
b. vMean veffective vpressure
c. vPeak vhorsepower
d. vPeak vtorque v- vAnswer v- va. vTotal vpiston vswept vvolume
2. vEngine vbreathing vin vthe vtwo-stroke vcycle vis vusually vreferred vto vas?!
a. vInertial
b. vScavenging
c. vExhaust vdisplacement v- vAnswer v- vb. vScavenging
3. vThe vtendency vof van vobject vin vmotion vto vwant vto vstay vin vmotion vis vknown vas?!
a. vKinetic venergy
b. vDynamic vfriction
c. vInertia
d. vMechanical vforce v- vAnswer v- vc. vInertia
4. vWhen va vmodern vdiesel vengine vis vrunning vat voptimum vefficiency, vthe vpercentage vof vrejected
vheat
would vtypically vbe?!
a. v20%
b. v40%
c. v60%
d. v80% v- vAnswer v- vc. v60%
,5. vWhat vpercentage vof vthe vpotential vheat venergy vof vthe vfuel vdoes vthe vmodern vdiesel vengine
vconvert vto
kinetic venergy vwhen vit vis voperating vclose vto voptimum vefficiency?!
a. v20%
b. v40%
c. v60%
d. v80% v- vAnswer v- vb. v40%
6. vIn vwhich vof vthe vfour vstrokes vof vthe vcycle vis vthe vcylinder vpressure vat vits vhighest vin va vrunning
vdiesel
engine?!
a. vIntake
b. vCompression
c. vPower
d. vExhaust v- vAnswer v- vc. vPower
7. vWhere vdoes vscavenging vtake vplace von va vfour-stroke vcycle vdiesel vengine?!
a. vBDC vafter vthe vpower vstroke
b. vTDC vafter vthe vcompression vstroke
c. vValve voverlap
d. v10 vto v20 vdegrees vATDC von vthe vpower vstroke v- vAnswer v- vc. vValve voverlap
8. vIdeally, vwhere vshould vpeak vcylinder vpressure voccur vduring vthe vpower vstroke?!
a. vTDC
b. v10 vto v20 vdegrees vATDC
c. v90 vdegrees vATDC
d. vAt vgas vblowdown v- vAnswer v- vb. v10 vto v20 vdegrees vATDC
, 9. vWhich vof vthe vseven vsubcircuits vof vthe vengine vdeals vwith vthe vcamshaft, vvalvetrains, vand
vmechanical
actuation vof vinjectors vand vfuel vpumping vapparatus?!
a. vPowertrain
b. vFeedback vassembly
c. vLubrication vcircuit
d. vEngine vhousing vcircuit v- vAnswer v- vb. vFeedback vassembly
10. vWhen vrunning van vengine vat vidle vspeed, vwhich vwould vtypically vbe vthe voptimum vlocation vto
vpeak vthe
cylinder vpressure?!
a. v20 vdegrees vBTDC
b. v10 vdegrees vBTDC
c. vTDC
d. v15 vdegrees vATDC v- vAnswer v- vd. v15 vdegrees vATDC
11. vWhen vrunning van vengine vat vrated vspeed vand vload, vwhich vwould vtypically vbe vthe voptimum
vlocation vto
peak vthe vcylinder vpressure?!
a. v30 vdegrees vBTDC
b. v15 vdegrees vBTDC
c. vTDC
d. v15 vdegrees vATDC v- vAnswer v- vb. v15 vdegrees vBTDC
12. vAt vwhich vpoint vin vthe vengine vcycle vdoes vthe vcrank vthrow vleverage vpeak?!
a. vTDC
b. vAround v15 vdegrees vATDC
c. vJust vbefore v90 vdegrees vATDC
d. vBTDC v- vAnswer v- vc. vJust vbefore v90 vdegrees vATDC
Answers
1. vWhich vof vthe vfollowing vaccurately vdescribes vengine vdisplacement?!
a. vTotal vpiston vswept vvolume
b. vMean veffective vpressure
c. vPeak vhorsepower
d. vPeak vtorque v- vAnswer v- va. vTotal vpiston vswept vvolume
2. vEngine vbreathing vin vthe vtwo-stroke vcycle vis vusually vreferred vto vas?!
a. vInertial
b. vScavenging
c. vExhaust vdisplacement v- vAnswer v- vb. vScavenging
3. vThe vtendency vof van vobject vin vmotion vto vwant vto vstay vin vmotion vis vknown vas?!
a. vKinetic venergy
b. vDynamic vfriction
c. vInertia
d. vMechanical vforce v- vAnswer v- vc. vInertia
4. vWhen va vmodern vdiesel vengine vis vrunning vat voptimum vefficiency, vthe vpercentage vof vrejected
vheat
would vtypically vbe?!
a. v20%
b. v40%
c. v60%
d. v80% v- vAnswer v- vc. v60%
,5. vWhat vpercentage vof vthe vpotential vheat venergy vof vthe vfuel vdoes vthe vmodern vdiesel vengine
vconvert vto
kinetic venergy vwhen vit vis voperating vclose vto voptimum vefficiency?!
a. v20%
b. v40%
c. v60%
d. v80% v- vAnswer v- vb. v40%
6. vIn vwhich vof vthe vfour vstrokes vof vthe vcycle vis vthe vcylinder vpressure vat vits vhighest vin va vrunning
vdiesel
engine?!
a. vIntake
b. vCompression
c. vPower
d. vExhaust v- vAnswer v- vc. vPower
7. vWhere vdoes vscavenging vtake vplace von va vfour-stroke vcycle vdiesel vengine?!
a. vBDC vafter vthe vpower vstroke
b. vTDC vafter vthe vcompression vstroke
c. vValve voverlap
d. v10 vto v20 vdegrees vATDC von vthe vpower vstroke v- vAnswer v- vc. vValve voverlap
8. vIdeally, vwhere vshould vpeak vcylinder vpressure voccur vduring vthe vpower vstroke?!
a. vTDC
b. v10 vto v20 vdegrees vATDC
c. v90 vdegrees vATDC
d. vAt vgas vblowdown v- vAnswer v- vb. v10 vto v20 vdegrees vATDC
, 9. vWhich vof vthe vseven vsubcircuits vof vthe vengine vdeals vwith vthe vcamshaft, vvalvetrains, vand
vmechanical
actuation vof vinjectors vand vfuel vpumping vapparatus?!
a. vPowertrain
b. vFeedback vassembly
c. vLubrication vcircuit
d. vEngine vhousing vcircuit v- vAnswer v- vb. vFeedback vassembly
10. vWhen vrunning van vengine vat vidle vspeed, vwhich vwould vtypically vbe vthe voptimum vlocation vto
vpeak vthe
cylinder vpressure?!
a. v20 vdegrees vBTDC
b. v10 vdegrees vBTDC
c. vTDC
d. v15 vdegrees vATDC v- vAnswer v- vd. v15 vdegrees vATDC
11. vWhen vrunning van vengine vat vrated vspeed vand vload, vwhich vwould vtypically vbe vthe voptimum
vlocation vto
peak vthe vcylinder vpressure?!
a. v30 vdegrees vBTDC
b. v15 vdegrees vBTDC
c. vTDC
d. v15 vdegrees vATDC v- vAnswer v- vb. v15 vdegrees vBTDC
12. vAt vwhich vpoint vin vthe vengine vcycle vdoes vthe vcrank vthrow vleverage vpeak?!
a. vTDC
b. vAround v15 vdegrees vATDC
c. vJust vbefore v90 vdegrees vATDC
d. vBTDC v- vAnswer v- vc. vJust vbefore v90 vdegrees vATDC
