Delta - EDM A Practice Test Questions And Answers 100% Certified.

An increase in car speed by more then _____% shall constitute a major alteration? - correct answer 10% What is the minimum level of illumination required in a passenger eleavtor car? - correct answer 50 lux Which of the following are installed as holeless hydraulic elevators? - correct answer Inverted Jack Assembly Where would a trucking sill be located? - correct answer Top of Door Panel What term best describes tying all metal parts at ground to minimize electrical shock hazards? - correct answer Bonding Rubber pads are placed under the machine and generator to reduce or eliminate - correct answer Noise and Vibration What is the main purpose of machine beams? - correct answer To Support the machine What is a rail alignment gauge used for? - correct answer To square the rails to each other When are plumb lines usually pulled? - correct answer When the hoistway is out of plumb Why is a rail installation detail drawing required? - correct answer To Prevent fishplates from occuring at a bracket What is the planed surface on the blade of a T rail called? - correct answer Face What is the most common type of rail used in the elevator industry? - correct answer T rail A dial indicator is used as a measuring instrument to? - correct answer Align coaxial shafts For hydraulic pumps with Wye Delta windings, what prevents both Wye-Delta contacts from being energized at the same time? - correct answer A walking beam is connected between the two contacts What is the term used to describe fittings that are installed without threading pipe? - correct answer Grooved pipe joint fittings How many sets of windings are there in a two speed, 3 phase motor? - correct answer Two sets Armatures using the lap winding method would be for? - correct answer High Current Application What is the result of improperly balanced armature? - correct answer Vibration Armature reaction can be compesated for by using? - correct answer Interpole Windings What term best descrubes tying all metal parts at a ground potential to minimize electrical shock hazards? - correct answer Bonding Last component to be installed on an escalator? - correct answer Step Plate Minimum number of terminals on a DC motor? - correct answer 2 Readings from AC/DC clamp on meter? - correct answer RMS and Average Purpose of lamination on armature and pole pieces of DC motor? - correct answer Reduce eddy current loss Lap winding used when? - correct answer High Current and Low Voltage How many priniciple views in an orthographic drawing? - correct answer 6 How to reduce armature reaction? - correct answer Interpole Best measuring instrument for shaft alignment? - correct answer Dial Indicator What type of Bolt is 5/8"-11? - correct answer UNC First rope clip distance from shackle? - correct answer 4 times diameter of rope What is meant by a closed loop system? - correct answer Feedback Purpose of taps on a transformer? - correct answer Voltage Regulation How many SCRS required for DC control systems? - correct answer 6 FRL used in pneumatic control systems. What is its purpose? - correct answer Lubrication Advantage of a soft start over a Delta-Wye Starter - correct answer More accurate leveling Single stage hole-less cylinder is what type> - correct answer Displacement Advantage of pump submerged in oil? - correct answer Reduced noise Overload relays used not only to protect the motor ? - correct answer Supply Bed plate tie downs are used where? - correct answer Bottom Traction geared Used to seat generator brushes? - correct answer Sand Paper What type of elevator machine uses no machine beams? - correct answer Machine Below Strength of rope or chain attachment point or terminal should be _____% of rope or chain? - correct answer 80% Can an inspector inspect a device in a private residence? - correct answer no Minimum height of barricades? - correct answer 42" Suitable location of muffler? - correct answer Close to pump Which one activates the electrical switch on a governor? - correct answer Moving Cam Riders are allowed on dumbwaiters? - correct answer False What is the total applied load on a hositing beam if 200 kg is hoisted with 2:1 roping? - correct answer 200 kg Pitch distance is? - correct answer Between adjacent groove center on the sheave Trucking sill location on freight elevator vertical biparting door? - correct answer Top part of door