600 Final Review Neiep UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS
Zener current will decrease Refer to figure 1. If the load resistance R2 is reduced by half what happens what
happens to zener diode?
, 4v 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 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 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 Refer to figure 3. For the inverting op amp shown, what is the output voltage?
Saturation 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 Which of the following describes how an SCR is turned OFF?
Top right On the fourteen pin DIP IC shown in figure 4 what is the location of pin 14
1507 ohms 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 The photodiode will conduct current when it detects
A relay timer What does the circuit in figure 5 represent?
12.5 A 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?
ANSWERS
Zener current will decrease Refer to figure 1. If the load resistance R2 is reduced by half what happens what
happens to zener diode?
, 4v 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 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 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 Refer to figure 3. For the inverting op amp shown, what is the output voltage?
Saturation 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 Which of the following describes how an SCR is turned OFF?
Top right On the fourteen pin DIP IC shown in figure 4 what is the location of pin 14
1507 ohms 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 The photodiode will conduct current when it detects
A relay timer What does the circuit in figure 5 represent?
12.5 A 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?
