Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?()
Which of the motors for the devices listed below is fitted with an instantaneous overload relay?()
Which of the listed chemicals can be routinely used to maintain the hygienic quality of potable water?()
Which of the listed sections of an emergency switchboard is used to supply power for alarm signals under emergency conditions?()
Which of the listed statements is a characteristic of the liquid charged power element used with thermostatic expansion valves?()
In an internal combustion engine, which of the devices listed will force the compression rings to seal the compression gases in the space above the piston?()
Which of the listed problems would be indicated by an accumulation of water in one cylinder, in addition to the crankcase of an idle diesel engine?()
Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?()
Which of the listed diesel engine systems is likely to create the problem of a cylinder regularly misfiring?()
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()