600 FINAL REVIEW NEIEP UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Question:
1. 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?
Question:
2. 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
Question:
3. 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
, Question:
4. 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?
Question:
5. Refer to figure 3. For the inverting op amp shown, what is the output voltage?
Answer:
-20 mv
Question:
6. Which term defines the limit of magnetic strength around an inductor even though
the current through the coil increases
Answer:
Saturation
Question:
7. Voltage is removed from anode to cathode
Answer:
Which of the following describes how an SCR is turned OFF?
QUESTIONS AND CORRECT ANSWERS
Question:
1. 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?
Question:
2. 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
Question:
3. 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
, Question:
4. 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?
Question:
5. Refer to figure 3. For the inverting op amp shown, what is the output voltage?
Answer:
-20 mv
Question:
6. Which term defines the limit of magnetic strength around an inductor even though
the current through the coil increases
Answer:
Saturation
Question:
7. Voltage is removed from anode to cathode
Answer:
Which of the following describes how an SCR is turned OFF?
