600 FINAL REVIEW NEIEP QUESTIONS AND ANSWERS
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?
, 600 FINAL REVIEW NEIEP QUESTIONS AND ANSWERS
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 transistors?
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)
It is nearly equal to the emitter current - (ANSWER)Which of the following is correct about collector
current of a transistor?
4400 pounds - (ANSWER)The entire cab assembly, including the car sling, cab doors, operator, etc.,
weighs 3400 lbs. The capacity of the elevator is 2500 lbs. The car must be counterweighted at 40% of
capacity plus the weight of the car assembly. What is the weight of the counterweight assembly?
The ability to resist changes in current flow - (ANSWER)What is the most important property an inductor
possesses?
Placing two capacitors in series decreases the capacitance. - (ANSWER)Which statement is correct
regarding capacitors?
Dielectric - (ANSWER)Which of the following factors determines the voltage rating of a capacitor?
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?
, 600 FINAL REVIEW NEIEP QUESTIONS AND ANSWERS
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 transistors?
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)
It is nearly equal to the emitter current - (ANSWER)Which of the following is correct about collector
current of a transistor?
4400 pounds - (ANSWER)The entire cab assembly, including the car sling, cab doors, operator, etc.,
weighs 3400 lbs. The capacity of the elevator is 2500 lbs. The car must be counterweighted at 40% of
capacity plus the weight of the car assembly. What is the weight of the counterweight assembly?
The ability to resist changes in current flow - (ANSWER)What is the most important property an inductor
possesses?
Placing two capacitors in series decreases the capacitance. - (ANSWER)Which statement is correct
regarding capacitors?
Dielectric - (ANSWER)Which of the following factors determines the voltage rating of a capacitor?
