Mechanics Exam Review-NEIEP questions with 100% correct answers

Mechanics Exam Review-NEIEPA contractor wants to raise the car speed from 100 fpm to 125 fpm, it currently has a 12" sheave. What is required? - correct answer 100 fpm/125 fpm= 12"/ X =15 A MOV (Metal Oxide Varistor) burns out. You replace it, but cannot read voltage or resistance. What should you do? - correct answer Replace it with a larger MOV - 630 On a Ward-Leonard circuit the brake is set, but the motor is trying to slip through the brake. What is the issue? - correct answer Suicide Circuit - 425 You have an old DC motor and are adding an SCR drive, what do you do to the interpoles? - correct answer Leave the interpoles alone. When adding a SCR drive to the generator, the series loop is removed, as are the 3 resistors. Everything else remains the same A hydro runs up with no load but will not run with a full load. What is the issue? - correct answer The relief valve is set too low - 815 Runby for a 1:1 hits the CWT buffer 4" below the top landing. CWT runby should be set at 18". How much should the ropes be shortened? - correct answer 22" - 235 You need to work on a freight door retiring cam, you LOTO the main line but there is still power on the cam. What circuit is still hot? - correct answer Door Operator disconnect -535 The contractor requests that the vertical center of a Rack and Pinion hoist be moved. How do you do this? - correct answer Adjust tie downs and wall ties - 850 Working pressure on a Hydro is 400 PSI. What is the maximum relief valve setting? - correct answer 400 x 150%= 600 PSI - 815 What must be installed on a false care before operation? - correct answer Spring Loaded safeties - 110