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If an electric motor driven air compressor fails to start, it may be due to a _____.

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transmitter at the steering station and a receiver at the steering engine  reversible motor at the steering station geared to the steering pumps  small induction motor on the bridge which controls the redder through pulleys  variable displacement hydraulic pump driven by a reversible DC motor  
An alternator  An electric motor  A diesel engine  A main switchboard  
camshaft; fresh air  camshaft; starting air  electronic motor which is controlled by a computer; fresh air  electronic motor which is controlled by a computer; starting air  
an electric motor  a diesel engine  a compressor  oil  
short proof  ground proof  explosion proof  overload proof  
a motor-driven steering wheel  a pneumatic steering wheel  a hand-driven steering wheel  an electric steering wheel  
electric motor  hydraulic motor  compressed air  turning gear  
excessive pump speed  excessive suction head  worn wearing rings  gross pump misalignment  
turning gear  motor  driving gear  driven gear  
Impeller  Electric motor  Volute  Eye  
offer fewer mileage than petrol driven cars  run faster than petrol driven cars  run more miles than petrol driven cars  offer more batteries than petrol driven cars  
high-pressure steam-driven air-ejector  motor-driven vacuum pump  water-motivated air eductor  centrifuge pump  
a centrifuge  an electric motor  a bowl assembly  a driving motor  
offer fewer mileage than petrol driven cars  run faster than petrol driven cars  run more miles than petrol driven cars  offer more batteries than petrol driven cars  
electric motor  volute  impeller  diffusion nozzle  
secure the electric supply  ventilate area to remove smoke  start the fire pump and lead out hose  apply foam  
gear drive by the engine  driven by an exhaust gas turbine  driven by a camshaft  driven by separate motor  
non-synchronous electric motor  synchronous electric motor  fully enclosed electric motor  watertight electric motor  
offer fewer mileage than petrol driven cars.  run faster than petrol driven cars.  run more miles than petrol driven cars.  offer more batteries than petrol driven cars.  

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