600 Final Review Neiep questions and answers
Graded A+
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?
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?
Graded A+
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?
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?
