Download NEIEP 600 Final Review – Verified Questions & Correct Answers | Updated 2025 | Graded A+ and more Exams Electrical Engineering in PDF only on Docsity!
Zener current will decrease - Correct Answer: Refer to figure 1. If the load resistance R2 is reduced by half what happens what happens to zener diode?
4v - Correct 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 - Correct 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 - Correct 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 - Correct Answer: Refer to figure 3. For the inverting op amp shown, what is the output voltage?
Saturation - Correct 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 - Correct Answer: Which of the following describes how an SCR is turned OFF?
Top right - Correct Answer: On the fourteen pin DIP IC shown in figure 4 what is the location of pin 14
1507 ohms - Correct 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:
600 Final Review Neiep Questions and
Correct Answers
light - Correct Answer: The photodiode will conduct current when it detects
Dielectric - Correct Answer: Which of the following factors determines the voltage rating of a capacitor?
A resistor is placed in series with the capacitor - Correct Answer: What is usually done to protect large capacitors during charging?
Excessive current in the coil circuit - Correct Answer: An MOV placed around a relay coil for voltage spike suppression has shorted. What would the effects be?
They may be polarity sensitive - Correct Answer: Which of the following do you need to be aware of when using electrolytic capacitors?
A low (0) on input A and a high (1) on input B - Correct Answer: Refer to figure 7. What inputs are necessary to get a low (0) on the output?
To help drain voltage when power is removed - Correct Answer: Why are bleeder resistors sometimes connected across high voltage capacitors?
350uf/150VDC - Correct Answer: What is the total capacitance and the maximum applied voltage for the circuit in figure 8?
Ripple voltage - Correct Answer: What is the AC component of a DC power supply output called?
A high (1) on input A and B - Correct Answer: Refer to figure 9. What inputs are necessary to get a high (1) on the output?
0.3 seconds - Correct Answer: What is the time constant for a circuit with 150 K ohms and 2 microfarad capacitor? (TC = R x C)
1.5 seconds - Correct Answer: How long will it take for this capacitor to be considered fully charged?
0.3 - Correct Answer: The voltage required to cause conduction across the junction in a germanium diode is?
3k ohms - Correct Answer: A 1.5 volt 8 milliamp light emitting diode needs to be operated from a 24VDC circuit. What series resistance is required?
Remove power and wear a grounded wrist strap - Correct Answer: When removing, installing and handling solid state circuit boards what precautions should be taken?
169.7 VAC - Correct Answer: What is the peak value of an AC voltage whose RMS value is 120 volts?
They operate more accurately over a greater current and voltage range - Correct Answer: Which of the following statements is correct as to why DC power supply series regulators are better than shunt regulators?
1000 0011 - Correct Answer: What is the binary equivalent of 131 10?
5AD - Correct Answer: What is the hexadecimal equivalent of 0101 1010 1101 2
190 VDC - Correct Answer: What is the correct average output voltage for a full-wave bridge rectified using silicon diodes with a peak input supply voltage of 300 VAC
2.4 A - Correct Answer: The secondary load current of a 2300 to 120 volt transformer is 46 amperes. What is the current primary? (E = I x R)
Placing a capacitor and resistor in parallel with the load - Correct Answer: How can pitting due to arching be reduced on relay contact surfaces?
Capacitor voltage is minimum and current is maximum - Correct Answer: Which of the following statements is correct when DC is first applied in an RC circuit?
Voltage spikes - Correct Answer: In elevator systems, what do noise suppression capacitors help reduce?
