If the electric motor driving an air compressor fails to start, the cause may be a ().
相似题目
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Electric cargo winches have an overload safety device which normally cuts the current to the winch motor().
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If a person is unconscious from electric shock,you should first remove him from the electrical source and then().
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Which of the following pumps will build up a bursting pressure or stall their motors if the discharge valves are closed?() (1) gear (2) centrifugal (3) screw
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The greatest detrimental effect on idle electrical equipment, such as cargo pump motors, is the().
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If a small electric motor is immersed in salt water it should be () (1) washed in fresh water (2) dried in an oven
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The drive motor will have a brake arranged to fail-safe, ieit will () the load if power fails or machine is stopped.
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Which of the following electric motors would be the safest and most reliable to use on the main deck of a vessel in foul weather conditions?()
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The () compressor and its electrical motor are entirely housed in a gas-tight casing.
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If absolutely necessary,the best way to land on a beach in a motor lifeboat is to().
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Electrical failures in motors are caused by the breakdown of insulation, which may be caused by ()
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The functioning of the radiotelegraph installations for motor lifeboats and/or the portable radio apparatus for survival craft,if provided,()with the provisions of the regulations.
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When hoisting a boat on gravity type davits using an electric motor driven winch,the davit arms should be brought up().
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Diesel engine electric starting motors generally require heavier duty motors and motors and operate at higher voltages than comparable starting motors for gasoline engines due to()
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When there is a fire in a large electric motor, normally the very FIRST step is to ()
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The primary function of an electric motor is to ()
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What type of electric motor is most commonly used on board ship?()
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You are transferring fuel from the storage tanks to the day tanks by means of an electric fuel oil transfer pumpIf the pump motor catches fire, you would FIRST ().
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“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()
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The drive motor will have a brake arranged to fail-safe, i√eit will () the load if power fails or machine is stopped.
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The (), cage rotor induction motor is the first choice marine motor in most modern ships because of its electrical and mechanical simplicity.
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If we want to buy furniture or electric appliances, which one is the reasonable choice?
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Where do cars get their energy from? For most cars, the answer is petrol. 1_____some cars use electricity. These cars have 2 _____motors that get their power from large batteries. In 3___, there are even cars that have 4_____ an electric motor and a petrol motor. These types of cars are 5_____ hybrid (混合) cars.
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Ivan: I brought you the new Groove People CD.Dale: What good is a CD if I haven't got a CD player? Ivan: I can bring you a CD player. Dale: What good is a CD player ifI don't even have electricity? Ivan: ______ Dale: What good is calling the Electric Company if I haven't got a house?
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If the guest wants to loan a electric heater what would you like to do ?
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