NEIEP 600 Final Review 2025 – Complete Study
Guide & Key Concepts
Zener current will decrease - ANSWER ✨✔---Refer to figure 1. If the load resistance R2 is reduced
by half what happens what happens to zener diode?
4v - ANSWER ✨✔---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
30 rpm - ANSWER ✨✔---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?
The output will go to zero - ANSWER ✨✔---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?
-20 mv - ANSWER ✨✔---Refer to figure 3. For the inverting op amp shown, what is the output
voltage?
Saturation - ANSWER ✨✔---Which term defines the limit of magnetic strength around an inductor
even though the current through the coil increases
, Voltage is removed from anode to cathode - ANSWER ✨✔---Which of the following describes how
an SCR is turned OFF?
Top right - ANSWER ✨✔---On the fourteen pin DIP IC shown in figure 4 what is the location of pin
14
1507 ohms - ANSWER ✨✔---A brake coil has an inductance of 4 henries. If the coil was placed into
a circuit with an operating frequency of 60hz the coil would have a resistance of:
light - ANSWER ✨✔---The photodiode will conduct current when it detects
A relay timer - ANSWER ✨✔---What does the circuit in figure 5 represent?
12.5 A - ANSWER ✨✔---A string of temporary lighting has fifteen 100 watt bulbs. A 15 amp breaker
is the maximum size that can be used with the 14 gauge wire used in this 120 volt circuit. What is the
current?
4.61 henries - ANSWER ✨✔---If a circuit has three inductors in parallel of 10, 15, and 20 henries,
what is the total inductance?
LED - ANSWER ✨✔---What does the symbol in figure 6 represent?
A .7V drop from base-to-emitter is an indication of a good junction - ANSWER ✨✔---Which of the
following statements is correct when testing transweristors?
An SCR - ANSWER ✨✔---What does the symbol shown below represent?
5 seconds - ANSWER ✨✔---What is the length of time required to charge a 500-microfarad
capacitor in series with a 10K ohm resistor to the maximum applied voltage of 125 VDC? (TC = R x C)
Guide & Key Concepts
Zener current will decrease - ANSWER ✨✔---Refer to figure 1. If the load resistance R2 is reduced
by half what happens what happens to zener diode?
4v - ANSWER ✨✔---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
30 rpm - ANSWER ✨✔---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?
The output will go to zero - ANSWER ✨✔---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?
-20 mv - ANSWER ✨✔---Refer to figure 3. For the inverting op amp shown, what is the output
voltage?
Saturation - ANSWER ✨✔---Which term defines the limit of magnetic strength around an inductor
even though the current through the coil increases
, Voltage is removed from anode to cathode - ANSWER ✨✔---Which of the following describes how
an SCR is turned OFF?
Top right - ANSWER ✨✔---On the fourteen pin DIP IC shown in figure 4 what is the location of pin
14
1507 ohms - ANSWER ✨✔---A brake coil has an inductance of 4 henries. If the coil was placed into
a circuit with an operating frequency of 60hz the coil would have a resistance of:
light - ANSWER ✨✔---The photodiode will conduct current when it detects
A relay timer - ANSWER ✨✔---What does the circuit in figure 5 represent?
12.5 A - ANSWER ✨✔---A string of temporary lighting has fifteen 100 watt bulbs. A 15 amp breaker
is the maximum size that can be used with the 14 gauge wire used in this 120 volt circuit. What is the
current?
4.61 henries - ANSWER ✨✔---If a circuit has three inductors in parallel of 10, 15, and 20 henries,
what is the total inductance?
LED - ANSWER ✨✔---What does the symbol in figure 6 represent?
A .7V drop from base-to-emitter is an indication of a good junction - ANSWER ✨✔---Which of the
following statements is correct when testing transweristors?
An SCR - ANSWER ✨✔---What does the symbol shown below represent?
5 seconds - ANSWER ✨✔---What is the length of time required to charge a 500-microfarad
capacitor in series with a 10K ohm resistor to the maximum applied voltage of 125 VDC? (TC = R x C)
