Student Name:
Section:
Grading
Content
Poor
Satisfactory
Good
Excellent
1. Content
Knowledge
-
-
-
-
2.
Organization
2
6
8
10
3. Language
2
6
8
10
Total
A.
Answer the following questions:
1. PLC stands for:
2. What are the basic components of a programmable logic controller?
3. Mention three application of using PLC.
Grade
B.
Choose the correct answer
1. The PLC that is introduced in the course is manufactured by
__________________.
A.
ABB
B.
Mitsubishi
C.
Siemens
D.
Toshiba
E
Bosch
2. The LOGO! Basic Module has ____________________
A.
8 inputs and 8 outputs.
B.
8 inputs and 4 outputs.
C.
4 inputs and 4 outputs.
D.
2 inputs and 2 outputs.
E.
4 inputs and 8 outputs.
3. Which of the following is not correct about the PLCs?
A.
PLCs are mini computers specially designed for industrial and other
applications
B.
They are easy to troubleshoot
C.
They could be used in high humidity environment
D.
They stand for Programmable Logic Collectors
E
They can be easily reprogrammed
4. Input signals reach the PLC via ___________________
A.
Actuators
C.
B.
Valves
C.
Motors
D.
Sensors
E
Solenoids
Classify the following into inputs and outputs
Lamps, Push buttons, buzzers, bells, proximity sensors, contactors, cylinders with
solenoid valves, stepper motors, switches, limit switches.
Input
Output
C.
Classify the following control systems into manual or automatic Write the
corresponding letter in the provided table.
a. The room temperature inside a house was maintained at 20° C using a
sensor.
b. Switching the motor starter ON and OFF.
c. A push button is used to operate a sorting machine.
d. The lights are turned OFF automatically when there is no one inside
the room.
e. Automobile Steering system
f. Store gate that count the number of people entering the shop
Manual
Automatic
D.
Classify the following into discrete or continuous control system. Write the
corresponding letter in the provided table.
a. Varying the speed of a motor.
b. Turing a lamp ON or OFF.
c. Controlling the light intensity of a lamp.
d. Maintaining room temperature at 20 ° C.
e. Varying the brightness of a dimmer lamp.
Discrete control system
Continuous control system
E.
In a certain PLC application, the lamp L1 must be ON when switch S1 OR S2
is pressed, and lamp L2 must turn ON when switch S3 AND S4 is pressed. The
output expressions are as follows: Q1 = I1, Q2 = I4. Make the required hardware
connections on the figure below, and label the inputs and outputs.