额定转速（rated speed）
额定转速（rated speed）
相关考题：
There is a close link between a rising_____of unemployment and a rising suicide_____. A.ratio; ratioB.speed;speedC.rate;rateD.tendency;tendency
Compared to a constant pitch propeller, a controllable pitch propellerA.more efficiently uses available engine powerB.operates at a lower efficiency at a fixed speedC.produces the same torque at lower engine powerD.develops its rated power at a lower speed
单选题If a cam-controlled engine has a normal injection pressure at rated speed,the injection pressure will be（）at slow speed.Aa little lowerBa little higherCtoo lowDexactly the same
单选题A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, is commonly classed as a （）.Aslow-speed dieselBmedium-speed dieselChigh-speed dieselDconstant-speed diesel
单选题异步电动机在电动状态时，额定转速、额定转差率分别为（）A额定转速高于同步转速，额定转差率大于1%B额定转速低于同步转速，额定转差率大于1%C额定转速高于同步转速，额定转差率小于1%D额定转速低于同步转速，额定转差率小于1%
单选题If a camshaft-less engine has a normal injection pressure at rated speed, the injection pressure will be at slow speed（）Atoo lowBa little lowerCa little higherDexactly the same
单选题Increasing the speed of a rotary pump above its rated speed will result in which of the following conditions to occur?（）ALoss of suctionBIncreased clearancesCDecreased clearanceDDecreased slippage
单选题Compared to a constant pitch propeller, a controllable pitch propeller（）.Amore efficiently uses available engine powerBoperates at a lower efficiency at a fixed speedCproduces the same torque at lower engine powerDdevelops its rated power at a lower speed
单选题在主机遥控系统中加速速率限制是指（）。A主机从起动成功到30%额定转速的加速过程B主机从起动成功到70%额定转速的加速过程C主机从30%额定转速到70%额定转速的加速过程D主机从70%额定转速到100%额定转速的加速过程
单选题在主机遥控系统中，程序负荷限制的起点大约是（）。A30%额定转速B50%额定转速C70%额定转速D90%额定转速