industry

National Elevator Industry Educational Program 300 Questions and Answers rated 100% _____ have a negative temperature coefficient -ansThermistor _____ refer to the moveable contacts on a switch -ansPoles A neutral atom has _____? -ansequal number protons and electrons Ability of material to retain it magnetism is called -ansRetentivity AC value that produces same heat dissipation in a resistor as an equivalent ...

National Elevator Industry Educational Program 400 Key concepts and Definitions review 1200 rpm - ansWhat is the synchronous speed of 3 phase, 60 Hz, 6 pole motor? Blow fuse - ansWhat would be the result if a meter set to current and connected to a voltage source? CEMF - ansWhat is the inherent current limiter present for a rotating motor armature called? Chocolate - ansWhen commutation is good, what color is the commutator? Clamp on ammeter - ansWhat kind of device would you use to...

National Elevator Industry Educational Program 425 Key Terms And Correct Answers A self-excited generator - ans20. Which of the following is a generator that relies on residual magnetism in its pole pieces for initial excitation? An external power source - ansIn a separately-excited generator, where does field excitation current come from? By varying the field or armature voltage - ans11. How is motor speed changed? Compound - ans12. What type of generator uses two fields? Current f...

National Elevator Industry Educational Program 600 Final Review -20 mv - ansRefer to figure 3. For the inverting op amp shown, what is the output voltage? 0.3 - ansThe voltage required to cause conduction across the junction in a germanium diode is? 0.3 seconds - ansWhat is the time constant for a circuit with 150 K ohms and 2 microfarad capacitor? (TC = R x C) 1.5 seconds - ansHow long will it take for this capacitor to be considered fully charged? - ansWhat is the binary equival...

National Elevator Industry Educational Program 610 Questions and Answers a brake coil has a normal resistance of 50 ohms and operates at 125 volts. what is the current? - ans2.5 amps a circuit with parallel branches has 200 ohms in one branch and 300 ohms in the other, what is the total resistance? - ans1200 ohms a resistor of what power rating including a safety factor would be needed to replace a resistor in a circuit operating with a 125v voltage drop and 1 amp of current? - ans250 w ...

National Elevator Industry Educational Program 800 Questions and Answers _____ run buttons should run the platform and sling at leveling speeds only. - ansTemporary (True/False) Anti-slide devices must be less than 3/4" in height, have no sharp corners or edges and fastened to the deck no closer than 4 inches from the handrail and spaced no greater than 6ft apart. - ansTrue (True/False) LULA's must provide a permanent mechanical holding device to mechanically stop and hold the car ...

National Elevator Industry Educational Program Review 2025 _______should not be disassembled in the field. - ansOil Buffers A reference mark from which vertical measurements are made is known as a - ansBench Mark All cab modernization should be performed at what floor? - ansTop floor At what speed should the counterweight safeties be set to trip? - ansUp to 10% higher than the car governor For carpet installation, if the cab area measures 94 inches by 62 inches and you need an add...

740 Variable voltage selective-collective control systems :Detailed Answers rated 100% (refer to NEIEP simplex or duplex selective-collective wiring diagrams) Duplex operation allows the "home car" to respond to a hall call after a 40 second delay with the dropping of which relay/s? - ansTT & TTX relays If there is a short in the hall or car button circuits, which fuse/s should open? - ansFuse 5 or 10 In the duplex system, when one car is traveling down to the lobby and the second...

Mechanics Exam:Questions and Correct Detailed Answers/ already Graded A+ * 1 gallon is how many cubic inches? - ans231 * A Force of 5000 lbs is applied to a plunger with an area of 25 sq inches. What is the system pressure? - ans200 psi. (5000 lbs/ 25 sq inches = 200 psi * A motor needs a sleeve bearing replaced. What type of bearing will you need? - ansFriction Bearing (420) * ADA height for a new Hall Fixture? - ans42" to center of fixture * How do you handle a coworker who sho...