C475 UPDATED SCRIPT 2026 PRACTICE
SOLUTIONS GRADED A+
● 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?
● LED. Answer: What does the symbol in figure 6 represent?
● A .7V drop from base-to-emitter is an indication of a good junction.
Answer: Which of the following statements is correct when testing
transistors?
SOLUTIONS GRADED A+
● 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?
● LED. Answer: What does the symbol in figure 6 represent?
● A .7V drop from base-to-emitter is an indication of a good junction.
Answer: Which of the following statements is correct when testing
transistors?
