NEIEP 600 Final Review Questions with Complete Solutions

NEIEP 600 Final Review Questions with Complete Solutions Refer to figure 1. If the load resistance R2 is reduced by half what happens what happens to zener diode? - Answer-Zener current will decrease Refer to figure 1. The zener diode is designed to breakdown at 6VDC what is the voltage drop across R1 with a constant DC supply of 10VDC - Answer-4v An elevators motor rotates at 1200 rpm at contract speed and is geard at a ratio of 40:1. If the motor turns 40 rpm the sheave turns 1 rpm. What is the actual speed of the drive sheave in rpms? - Answer-30 rpm Refer to figure 2. For the comparator circuit shown, what will happen to the output of the non-inverting input goes more positive than the inverting input? - Answer-The output will go to zero Refer to figure 3. For the inverting op amp shown, what is the output voltage? - Answer- -20 mv Which term defines the limit of magnetic strength around an inductor even though the current through the coil increases - Answer-Saturation Which of the following describes how an SCR is turned OFF? - Answer-Voltage is removed from anode to cathode