转速不等率(speed governing droop)

转速不等率(speed governing droop)


相关考题:

When the prime movers of two paralleled generators are equipped with mechanical-hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will .A.pick up more of any increase in loadB.pick up less of any increase in loadC.share an equal amount of any increase in loadD.drop an equal amount of any decrease in load

Engine operating conditions may be indicated by the color of the exhaust smoke Black smoke could indicate .A.an insufficient speed droop settingB.an overloaded engineC.clogged drain holes in the oil control ringsD.complete combustion

The load sharing characteristics of two diesel generators operating in parallel are mostly dependent on their governor ______.A.load limit settingsB.idle speed settingsC.speed limit settingsD.speed droop settings

有差调节系统的()的比值称之为调节系统的不等率。A、转速允许差值与额定转速B、转速允许差值与买际转速C、转速允许差值与燃料量D、实际转速与额定转速

转速不等率是指()。

数字电液控制(DEH)系统油动机和调节汽门频繁动作必然造成部件磨损从而降低寿命,因此在DEH系统中人为引入()以减少不必要的调门动作。A、调频限幅B、转速不灵敏区(死区)C、转速不等率D、转速偏差

异步电动机的旋转速度不等于旋转磁场的同步转速,同步转速大于电动机的转速,两个转速不同步()

调节系统转速不等率为δ为(),一般取4%~5%。A、3%~7%B、4%~6%C、3%~5%D、3%~6%

关于中兴ZXCTN62006300设备风扇及电源,以下说法错误的是:()。A、中兴ZXCTN6263设备风扇转速只能是全速运行,无法降低转速B、Show powerfanstate检查电源、风扇的工作状态C、Show fan-speed检查风扇的运行状态D、Set fan-speed full设置风扇全速运行

电液调节系统的转速不等率应连续可调,一般为()。A、4%~6%B、3%~6%C、4%~5%

点火转速(ignition speed)

车辆弯道行驶时,差速器两侧半轴齿轮的()。A、转速相等B、转速不等C、转矩相等D、转矩不等

同步发电机的转速永远()同步转速。A、低于B、高于C、等于D、不等于

汽油发动机外特性曲线表明,当发动机运转速度()发动机最大扭矩所对应的转速时,随着转速的逐渐增加,发动机扭矩和功率均呈现增加趋热,而燃油消耗率呈下降趋势。A、大于B、等于C、小于D、不等于

汽轮机调速系统静态基本性能指标包括()。A、局部不等率B、转速不等率C、迟缓率(死区)D、压力不等率

发电机组调节系统动态性能指标包括:稳定性、()。A、转速不等率B、超调量C、过渡时间D、迟缓率

单选题Air bubbles in a hydraulic governor can cause ()Asluggish responseBspeed droop variationsCisochronous governingDsensitivity increase

单选题A change in engine speed is required before a governor is able to make a corrective movement of fuel rackThis aspect of governing is commonly expressed as a percent and is known as ()Agovernor sensitivityBgovernor promptnessCspeed droopDisochronous governing

单选题有差调节系统的()的比值称之为调节系统的不等率。A转速允许差值与额定转速B转速允许差值与买际转速C转速允许差值与燃料量D实际转速与额定转速

单选题Engine operating conditions may be indicated by the color of the exhaust smoke.Black smoke could indicate()Aan insufficient speed droop settingBan overloaded engineCclogged drain holes in the oil control ringsDcomplete combustion

单选题To correct a hunting problem in a main propulsion diesel engine hydraulic governor, you should ().Aincrease the governor oil pressureBadjust the speed droop settingCadjust the speeder spring travelDadjust the compensating needle valve

多选题车辆弯道行驶时,差速器两侧半轴齿轮的()。A转速相等B转速不等C转矩相等D转矩不等

单选题When the prime movers of two paralleled generators are equipped with mechanical- hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will ().Apick up more of any increase in loadBpick up less of any increase in loadCshare an equal amount of any increase in loadDdrop an equal amount of any decrease in load

单选题The load sharing characteristics of two diesel generator operating in parallel are mostly dependent on their governor ().Aload limit settingsBidle speed settingsCspeed limit settingsDspeed droop settings

单选题A diesel generator has just been paralleled with an AC turbo-generator, but the load can not be properly divided.This could be caused by()Aan incorrect diesel generator governor speed droop adjustmentBa faulty reverse power relay within the main circuit breaker assemblyCunsynchronized isochronous load distribution adjustmentsDa different speed setting on each unit

单选题The ability of the governor to prevent fluctuations in engine speed is termed ().AsensitivityBstabilityCpromptnessDspeed droop

单选题On a diesel engine equipped with an isochronous governor, if the “speed droop” control is reduced to the “zero” setting, the engine ()Aspeed will drop drastically with any increase in loadBwill stop due to zero fuel supplyCwill stall upon application of loadDspeed will remain fairly constant despite load changes