NEIEP 600 Final Exam Review
Refer to figure, If load resistance R2 is reduced by half, what happens to the zener diode?(Ans- Zener current will decrease
Refer to the figure, the zener diode is designed to breakdown at 6VDC.What is the voltage drop across resistor 1, with a constant DC supply of 10 VDC?(Ans- 4V
An elevators motor rotates at 1200 rpm at contract speed and is geared 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?(Ans- 30 rpm
Refer to the figure, for the comparator circuit shown, what will happen to the output if the non inverting input goes more positive than the inverting input?(Ans- The output will go to zero.
Refer to the figure, for the inverting op amp shown, what is the output voltage?(Ans- 25 mv
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Which term defines the limit of magnetic strength around an inductor even though the current through the coil increases?(Ans- Saturation
Which of the follow describes how an SCR is turned off?(Ans- Voltage is removed from anode to cathode
On the fourteen pin DIP IC shown in figure 4 what is the location of pin 14?(Ans- Top right
The photodiode will conduct current when it detects?(Ans- Light
What does the circuit in figure 5 represent?(Ans- A relay timer
A string of temporary lighting has fifteen 100 watt light bulbs. A 15 amp breaker is the max size that can be used with the 14 gauge wire used in this 120 volt circuit. What is the current?(Ans- 12.5 A
If a circuit has three inductors in parallel of 10, 15 and 20 henries, what is the total inductance?(Ans- 4.61 Henries
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