经济学原理对应练习17Word文档格式.doc
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Monopolisticcompetition MSC:
Definitional
2. Whichofthefollowingmarketswouldmostlikelyberepresentedbymonopolisticcompetition?
a. Themarketforcorn.
b. Themarketforcabletelevisionservice.
c. Themarketfor#2woodenpencils.
d. Themarketforclothing.
D PTS:
2 REF:
Interpretive
3. Monopolisticcompetitionischaracterizedbywhichofthefollowingattributes?
(i) Freeentry
(ii) Productdifferentiation
(iii) Manysellers
a. (i)and(iii)only
b. (i)and(ii)only
c. (ii)and(iii)only
d. (i),(ii),and(iii)
17-1
4. Inamonopolisticallycompetitiveindustry,firmssetprice
a. equaltomarginalcostsinceeachfirmisapricetaker.
b. belowmarginalcostsinceeachfirmisapricetaker.
c. abovemarginalcostsinceeachfirmisapricesetter.
d. alwaysafractionofmarginalcostsinceeachfirmisapricesetter.
C PTS:
Price MSC:
5. Inwhichofthefollowingmarketstructuresaretherealargenumberofsellers?
(i) Monopolisticcompetition
(ii) Perfectcompetition
(iii) Oligopoly
a. (i)and(ii)only
b. (ii)and(iii)only
c. (ii)only
A PTS:
Markets MSC:
6. Inwhichofthefollowingmarketstructuresdoesfreeentryandexitplayanimportantroleinthelong-runequilibriumoutcome?
(i) Perfectcompetition
(ii) Monopolisticcompetition
(iii) Monopoly
a. (i)only
7. Monopolisticcompetitiondiffersfromperfectcompetitionbecauseinmonopolisticallycompetitivemarkets
a. therearebarrierstoentry.
b. allfirmscaneventuallyearneconomicprofits.
c. eachofthesellersoffersasomewhatdifferentproduct.
d. strategicinteractionsbetweenfirmsisvitallyimportant.
8. Onewayinwhichmonopolisticcompetitiondiffersfromoligopolyisthat
a. therearenobarrierstoentryinoligopolies.
b. inoligopolymarketsthereareonlyafewsellers.
c. allfirmsinanoligopolyeventuallyearnzeroeconomicprofits.
d. strategicinteractionsbetweenfirmsarerarelyevidentinoligopolies.
9. Asimilaritybetweenmonopolyandmonopolisticcompetitionisthat,inbothmarketstructures,
a. strategicinteractionsamongsellersareimportant.
b. thereareasmallnumberofsellers.
c. sellersarepricemakersratherthanpricetakers.
d. productdifferentiationisimportant.
10. Aprofit-maximizingfirminamonopolisticallycompetitivemarketdiffersfromafirminaperfectlycompetitivemarketbecausethefirminthemonopolisticallycompetitivemarket
a. ischaracterizedbymarket-sharemaximization.
b. hasnobarrierstoentry.
c. facesadownward-slopingdemandcurveforitsproduct.
d. facesahorizontaldemandcurveatthemarketclearingprice.
11. Theprofit-maximizingruleforafirminamonopolisticallycompetitivemarketistoalwaysselectthequantityatwhich
a. marginalrevenueisequaltomarginalcost.
b. averagetotalcostisequaltomarginalrevenue.
c. averagetotalcostisequaltoprice.
d. averagerevenueexceedsaveragetotalcost.
Profitmaximization MSC:
12. Aprofit-maximizingfirminamonopolisticallycompetitivemarketischaracterizedbywhichofthefollowing?
a. Averagerevenueexceedsmarginalrevenue
b. Marginalrevenueexceedsaveragerevenue
c. Averagerevenueisequaltomarginalrevenue
d. Revenueisalwaysmaximizedalongwithprofit
Figure17-1
13. RefertoFigure17-1.Whichofthegraphsdepictsthesituationforaprofit-maximizingfirminamonopolisticallycompetitivemarket?
a. Panela
b. Panelb
c. Panelc
d. Paneld
14. RefertoFigure17-1.IfafirminamonopolisticallycompetitivemarketwasproducingthelevelofoutputdepictedasQdinpanel(d),itwould
a. notbemaximizingitsprofit.
b. beminimizingitslosses.
c. belosingmarketsharetootherfirmsinthemarket.
d. beoperatingatexcesscapacity.
Analytical
15. RefertoFigure17-1.Thefirmdepictedinpanelbfacesahorizontaldemandcurve.Ifpanelbdepictsaprofit-maximizingfirm,
a. itcouldbeoperatingineitheraperfectlycompetitivemarketorinamonopolisticallycompetitivemarket.
b. itwouldnothaveexcesscapacityinitsproductionaslongasitisearningzeroeconomicprofit.
c. itisabletochoosethepriceatwhichitsellsitsproduct.
d. thefirmcanalwaysraiseitsprofitbyincreasingproductionsinceconsumerswillbuyasmuchasthefirmcanproduce.
16. Productdifferentiationcausesthesellerofagoodtofacewhattypeofdemandcurve?
a. Downwardsloping
b. Vertical
c. Horizontal
d. Anyoftheabovecouldbecorrectsinceproductdifferentiationdoesnotaffecttheshapeofthedemandcurve.
Demandcurve MSC:
Figure17-2
17. RefertoFigure17-2.Whichofthegraphsshownwouldbeconsistentwithafirminamonopolisticallycompetitivemarketthatisearningapositiveprofit?
18. RefertoFigure17-2.Whichofthegraphsshownwouldbeconsistentwithafirminamonopolisticallycompetitivemarketthatisdoingitsbestbutstilllosingmoney?
19. RefertoFigure17-2.Whichofthegraphsdepictsamonopolisticallycompetitivefirminlong-runequilibrium?
d. Noneoftheaboveiscorrect.
Long-runequilibrium MSC:
20. Intheshortrun,afirminamonopolisticallycompetitivemarketoperatesmuchlikea
a. firminaperfectlycompetitivemarket.
b. firminanoligopoly.
c. monopolist.
d. monopsonist.
21. Amonopolisticallycompetitivefirmchooses
a. thequantityofoutputtoproduce,butthemarketdeterminesprice.
b. theprice,butcompetitioninthemarketdeterminesthequantity.
c. price,butoutputisdeterminedbyacartelproductionquota.
d. thequantityofoutputtoproduceandthepriceatwhichitwillsellitsoutput.
22. Iffirmsinamonopolisticallycompetitivemarketareearningpositiveprofits,then
a. firmswilllikelybesubjecttoregulation.
b. barrierstoentrywillbestrengthened.
c. somefirmsmustexitthemarket.
d. newfirmswillenterthemarket.
23. Iffirmsinamonopolisticallycompetitivemarketareearningeconomicprofits,whichofthefollowingscenarioswouldbestdescribethechangeexistingfirmswouldfaceasthemarketadjuststothelong-runequilibrium?
a. Anincreaseindemandforeachfirm
b. Adecreaseindemandforeachfirm
c. Adownwardshiftinthemarginalcostcurveforeachfirm
d. Anupwardshiftinthemarginalcostcurveforeachfirm
24. Iffirmsinamonopolisticallycompetitivemarketareincurringeconomiclosses,whichofthefollowingscenarioswouldbestdescribethechangeexistingfirms(whoareabletostayinthemarket)wouldfaceasthemarketadjuststothelong-runequilibrium?
a. Adownwardshiftinthemarginalcostcurveforeachfirm
b. Anupwardshiftinthemarginalcostcurveforeachfirm
c. Adecreaseindemandforeachfirm
d. Anincreaseindemandforeachfirm
Figure17-3
Thelinesinthefiguresbelowillustratethepotentialeffectofentryandexitinamonopolisticallycompetitivemarketoneitherthedemandcurveorthemarginalcostcurveofexistingfirms.
25. RefertoFigure17-3.Panel(d)illustratesthechangethatwouldoccurifexistingfirmsfaced
a. long-runeconomiclosses.
b. adecreaseinthediversityofproductsofferedinthemarket.
c. newentrantsinthemarket.
d. firmsexitingthemarket.
26. RefertoFigure17-3.Whichofthediagramsillustratestheimpactofsomeexistingfirmsleavingthemarket?
27. Inmonopolisticallycompetitivemarkets,positiveeconomicprofits
a. suggestthatsomeexistingfirmswillexitthemarket.
b. suggestthatnewf
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