When voltage and current developed in an AC circuit reach their peak values at the same time, the power factor is _____.A.laggingB.leadingC.maximumD.minimum

When voltage and current developed in an AC circuit reach their peak values at the same time, the power factor is _____.

A.lagging

B.leading

C.maximum

D.minimum


相关考题:

Which of the following characteristics must be matched depending on the specifications of thepower grid for the country a PSU will be utilized in?() A. WattageB. AmperageC. ResistanceD. Voltage

WhichstatementsistrueaboutForeignExchangeStation(FXS)portsonarouter?() A.theFXSinterfaceallowsananalogconnectiontobedirectedatthepublicswitchedtelephonenetwork(PSTN’s)centralofficeB.theFXSinterfaceconnectdirectlytoastandardtelephone,faxmachine,orsililardeviceandsuppliesring,voltage,anddialtoneC.theFXSinterfaceconnectdirectlytoanIPphoneandsuppliesring,voltage,anddialtoneD.theFXSinterfaceconnectdirectlytoISDNvoicechannels

WhichstatementistrueaboutForeignExchangeStation(FXS)portsonarouter?() A.TheFXSinterfaceallowsananalogconnectiontobedirectedatthepublicswitchedtelephonenetwork(PSTN’s)centraloffice.B.TheFXSinterfaceconnectsdirectlytoastandardtelephone,faxmachine,orsimilardeviceandsuppliesring,voltage,anddialtone.C.TheFXSinterfaceconnectsdirectlytoanIPphoneandsuppliesring,voltage,anddialtone.D.TheFXSinterfaceconnectsdirectlytoISDNvoicechannels.

The political situation in the region has deteriorated rapidly.A: improvedB: changedC: worsenedD:developed

Many forms of cancer can be cured if detected early.A:discoveredB:selectedC:operatedD:developed

He advanced a novel theory during the seminar.A:moved B:inventedC:furnished D:developed

One-room schoolhouse can still be found in isolated areas of North America.A:bareB:deprivedC:remoteD:developed

42、若IRR函数中参数values全部设置为正值,则函数将返回()。A.0B.#N/AC.#NUM!D.#VALUE!

若IRR函数中参数values全部设置为正值,则函数将返回()。A.0B.#N/AC.#NUM!D.#VALUE!

3、若IRR函数中参数values全部设置为正值,则函数将返回()。A.0B.#N/AC.#NUM!D.#VALUE!