名词解释题Motor
名词解释题
Motor
参考解析
解析：
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相关考题：
Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by ______.A.permanent loss of pump suctionB.worn shaft sealsC.high level in the oil sumpD.low motor RPM
______ of the following statements is（are）correct regarding motor lifeboats on cargo vessels．① The motor of each lifeboat shall be operated in the ahead and astern position for a period of not more than 5 minutes once in each week；② The fuel tank of all motor-propelled lifeboats shall be emptied and the fuel changed at least once in every year．A.① onlyB.② onlyC.Both ① and ②D.Neither ① nor ②
Under no circumstances______without looking carefully to the rear.A.should one back up a motor vehicleB.a motor vehicle should back upC.one should back up a motor vehicleD.should back up a motor vehicle
执行指令（）可实现STR12-280机器人左右平移步进电机向左平移10000步。A、motor_sj_bs（1，10000）；B、motor_zy_bs（1，10000）；C、motor_qh_bs（1，10000）；D、DJ2_XPY（zpy）；
实现STR12-280机器人升降步进电机下降10000步的是（）。A、motor_sj_bs（1，10000）；B、motor_zy_bs（0，10000）；C、motor_qh_bs（1，10000）；D、motor_sj_bs（0，10000）；
下列STR12-280机器人例程函数中调用格式正确的是（）。A、motor_sj_bs（1）B、motor_qh_bs（1，1000）C、motor_sj_bs（1，70000）D、motor_zy_yd（1，1000）
单选题The overcurrent relay （） the motor contactor when the motor exceeds its rated current.AconnectsBtripsCfoulsDdestructs
单选题操作完后，关掉电动机。（）AAfter operation, start the electric motor.BBefore operation, stop the electric motor.CBefore operation, start the electric motor.DAfter operation, stop the electric motor.
单选题An AC synchronous transmission type remote steering control system consists of a （）.Atransmitter at the steering station and a receiver at the steering engineBreversible motor at the steering station geared to the steering pumpsCsmall induction motor on the bridge which controls the redder through pulleysDvariable displacement hydraulic pump driven by a reversible DC motor
单选题The （）, cage rotor induction motor is the first choice marine motor in most modern ships because of its electrical and mechanical simplicity.Asingle phaseBtwo phaseCthree phaseDfour phase
单选题“A centrifuge consists of an electric motor driving a vertical shaft on the top of which is mounted the bowl assembly”.According to this sentence, we can know that is mounted on the top of the vertical shaft（）Aa centrifugeBan electric motorCa bowl assemblyDa driving motor
单选题“380V/220V Y/△” noted on the nameplate of a non-synchronous motor means that（）Athe armature terminals of the motor should be connected in star formation when voltage of power supply is 380Bthe armature terminals of the motor should be connected in star formation when voltage of power supply is 220Cboth A and B are correctDthe armature terminals of the motor should be connected in reverse ways of A and B
单选题The energy consumed by an AC motor, as strictly reactive power, is （）Aused to do mechanical workBused to establish the magnetic field of the motorClost as heat generated by the windingsDlost in doing work to turn the motor itself
单选题Ambient temperature is the （）.Aamount of temperature rise with no loadBtemperature of the compartment where the motor is locatedCnormal operating temperature, less the room temperatureDamount of temperature developed by an operating motor
单选题In a fixed displacement axial piston hydraulic motor, the speed is varied by（）Aregulating the ratio between torque and speed via the torque limiter at the motorBdirecting the motor output flow through a bypass lineCmaintaining a constant flow and pressure inputDcontrolling the input flow rate
单选题What type of electric motor is most commonly used on board ship?（）Anon-synchronous electric motorBsynchronous electric motorCfully enclosed electric motorDwatertight electric motor
单选题The air distributor is conventionally driven by（） and distributes into each cylinder by（） certain sequence.Acamshaft；fresh airBcamshaft；starting airCelectronic motor which is controlled by a computer；fresh airDelectronic motor which is controlled by a computer；starting air
单选题When a refrigeration compressor motor fails to start, the FIRST thing that should be checked for is a （）.Aloose expansion valve control bulbBlow differential setting on the H-PcutoutCblown fuse in the motor circuitDfaulty suction pressure regulator