Question 1

Match the proximity sensor parameter name with the correct parameter definition.
-Reference Axis

Accepted Answer

A)  The difference between the resetting distance and the sensing distance and is the system hysteresis. 
B)  A thin square metal plate which is used as the standard to measure proximity sensor parameters. 
C)  The point where the sensor changes from o n to off as the standard object is withdrawn from the sensor. 
D)  The distance from the sensor reference plane to the point where the standard object causes the sensor output to change from off to on. 
E)  A line perpendicular to the sensor face and in the center of the sensor surface extending directly away from the sensor 
A)  The difference between the resetting distance and the sensing distance and is the system hysteresis. 
B)  A thin square metal plate which is used as the standard to measure proximity sensor parameters. 
C)  The point where the sensor changes from o n to off as the standard object is withdrawn from the sensor. 
D)  The distance from the sensor reference plane to the point where the standard object causes the sensor output to change from off to on. 
E)  A line perpendicular to the sensor face and in the center of the sensor surface extending directly away from the sensor

Question 2

Match the statement that describes a sensor type with the name of the sensor mode .
-Sensor with the light source and
Receiver in the same package and a special target to reflect output light back to the receiver.

Accepted Answer

A)  Polarized retroreflective sensor type 
B)  Retroreflective photoelectric sensor type 
C)  Through-beam photoelectric sensor type 
D)  Diffuse photoelectric sensor type 
A)  Polarized retroreflective sensor type 
B)  Retroreflective photoelectric sensor type 
C)  Through-beam photoelectric sensor type 
D)  Diffuse photoelectric sensor type

Question 3

With the anode connected to the positive lead of an ohmmeter and the cathode to the negative lead, a good SCR will conduct when __________

Accepted Answer

A)  the gate is connected to the anode 
B)  the gate is connected to the cathode 
C)  the gate is grounded 
D)  the gate open 
A)  the gate is connected to the anode 
B)  the gate is connected to the cathode 
C)  the gate is grounded 
D)  the gate open

Question 4

Vision systems used in range finding require the use of two or more cameras.

Accepted Answer

A) True 
 B)False

Question 5

Match the proximity sensor parameter name with the correct parameter definition.
-Reset Distance or Release Off

Accepted Answer

A)  The difference between the resetting distance and the sensing distance and is the system hysteresis. 
B)  A thin square metal plate which is used as the standard to measure proximity sensor parameters. 
C)  The point where the sensor changes from o n to off as the standard object is withdrawn from the sensor. 
D)  The distance from the sensor reference plane to the point where the standard object causes the sensor output to change from off to on. 
E)  A line perpendicular to the sensor face and in the center of the sensor surface extending directly away from the sensor 
A)  The difference between the resetting distance and the sensing distance and is the system hysteresis. 
B)  A thin square metal plate which is used as the standard to measure proximity sensor parameters. 
C)  The point where the sensor changes from o n to off as the standard object is withdrawn from the sensor. 
D)  The distance from the sensor reference plane to the point where the standard object causes the sensor output to change from off to on. 
E)  A line perpendicular to the sensor face and in the center of the sensor surface extending directly away from the sensor

Question 6

Vision systems come in two basic configurations: imaging arrays and linear arrays.

Accepted Answer

A) True 
 B)False

Question 7

You need a device to sense boxes passing on a conveyor, a sensing distance of 5 feet, that will have all sensor units that require power on one side of conveyor. What is the best sensor to use?

Accepted Answer

A)  Retroreflective photoelectric 
B)  Transmitted beam photoelectric 
C)  Diffuse photoelectric 
D)  Capacitive proximity 
E)  None of the above 
A)  Retroreflective photoelectric 
B)  Transmitted beam photoelectric 
C)  Diffuse photoelectric 
D)  Capacitive proximity 
E)  None of the above

Question 8

The photoelectric margin parameter is also called gain multiplier.

Accepted Answer

A) True 
 B)False

Question 9

Vision systems can be use to count the number of holes or features on a part, but are not capable of measuring the size the features.

Accepted Answer

A) True 
 B)False

Question 10

The triac offers the designer an economical and versatile means of accurately controlling AC power.

Accepted Answer

A) True 
 B)False

Question 11

The __________type of capacitive proximity sensors is one of two types available.

Accepted Answer

A)  conductive 
B)  shielded 
C)  dielectric 
D)  unshielded 
E)  All of the above 
A)  conductive 
B)  shielded 
C)  dielectric 
D)  unshielded 
E)  All of the above

Question 12

The application calls for a sensor to detect metal parts at a fixed distance greater than 60 mm from the sensor location. Access from one side only is permitted.What is the best sensor to use?

Accepted Answer

A)  Retroreflective photoelectric 
B)  Diffuse photoelectric 
C)  Transmitted beam photoelectric 
D)  Inductive proximity 
E)  None of the above 
A)  Retroreflective photoelectric 
B)  Diffuse photoelectric 
C)  Transmitted beam photoelectric 
D)  Inductive proximity 
E)  None of the above

Question 13

Photoelectric sensors have five components that include a light source, light detector, logic circuit, lens, and output switching device.

Accepted Answer

A) True 
 B)False

Question 14

Match the device t o the schematic symbol.
-Shockley diode

Accepted Answer

A)    
B)    
C)    
A)    
B)    
C)

Question 15

The conduction angle is the angle in degrees when the SCR turns on.

Accepted Answer

A) True 
 B)False

Question 16

Triacs operate mostly in quadrant(s)

Accepted Answer

A)  1. 
B)  4. 
C)  3. 
D)  2. 
E)  A and C 
A)  1. 
B)  4. 
C)  3. 
D)  2. 
E)  A and C

Question 17

Match the the correct lighting configuration with lighting application.
-Oblique lighting

Accepted Answer

A)  Applications where shadow elimination is critical 
B)  Useful for showing surface texture or edge details o n objects 
C)  Extracts greater information for the flat surfaces of objects 
D)  Useful for emphasizing object edges for dimensional checks 
A)  Applications where shadow elimination is critical 
B)  Useful for showing surface texture or edge details o n objects 
C)  Extracts greater information for the flat surfaces of objects 
D)  Useful for emphasizing object edges for dimensional checks

Question 18

To protect the SCR from dv/dt false triggering, an LC snubber circuit is used.

Accepted Answer

A) True 
 B)False

Question 19

Like the SCR, the Shockley diode remains in the on -state until the forward current drops below the holding current.

Accepted Answer

A) True 
 B)False

Question 20

Electronic sensors can be wired in AND type of circuits but the output electronics does not permit OR type of logic to be used.

Accepted Answer

A) True 
 B)False

Match the proximity sensor parameter name with the correct parameter definition. -Reference Axis

Match the statement that describes a sensor type with the name of the sensor mode . -Sensor with the light source and Receiver in the same package and a special target to reflect output light back to the receiver.

With the anode connected to the positive lead of an ohmmeter and the cathode to the negative lead, a good SCR will conduct when __________

Vision systems used in range finding require the use of two or more cameras.

Match the proximity sensor parameter name with the correct parameter definition. -Reset Distance or Release Off

Vision systems come in two basic configurations: imaging arrays and linear arrays.

You need a device to sense boxes passing on a conveyor, a sensing distance of 5 feet, that will have all sensor units that require power on one side of conveyor. What is the best sensor to use?

The photoelectric margin parameter is also called gain multiplier.

Vision systems can be use to count the number of holes or features on a part, but are not capable of measuring the size the features.

The triac offers the designer an economical and versatile means of accurately controlling AC power.

The __________type of capacitive proximity sensors is one of two types available.

The application calls for a sensor to detect metal parts at a fixed distance greater than 60 mm from the sensor location. Access from one side only is permitted.What is the best sensor to use?

Photoelectric sensors have five components that include a light source, light detector, logic circuit, lens, and output switching device.

Match the device t o the schematic symbol. -Shockley diode

The conduction angle is the angle in degrees when the SCR turns on.

Triacs operate mostly in quadrant(s)

Match the the correct lighting configuration with lighting application. -Oblique lighting

To protect the SCR from dv/dt false triggering, an LC snubber circuit is used.

Like the SCR, the Shockley diode remains in the on -state until the forward current drops below the holding current.

Electronic sensors can be wired in AND type of circuits but the output electronics does not permit OR type of logic to be used.

Introduction to Industrial Control Systems, Discrete Control Input and Output Devices

Solidstate Devices in Industrial Applications, Operational Amplifiers and Linear ICS

Analog Processes Control Devices, Sensors and Safety

DC Motors, Control Circuits, AC Motors and Variable Speed Drives

Special Purpose Motor, Control Devices and Programmable Logic Controllers

Embedded Microcontrollers, Open and Closed Loop Process Control

Industrial Robots, Automation Systems and Data Communication Between Intelligent Machines

Filters

Exam 3: SCRS, Triacs, Other Thryristors, Discrete Automation Sensors and Devices

Match the proximity sensor parameter name with the correct parameter definition. -Reference Axis

Match the statement that describes a sensor type with the name of the sensor mode . -Sensor with the light source and Receiver in the same package and a special target to reflect output light back to the receiver.

With the anode connected to the positive lead of an ohmmeter and the cathode to the negative lead, a good SCR will conduct when __________

Vision systems used in range finding require the use of two or more cameras.

Match the proximity sensor parameter name with the correct parameter definition. -Reset Distance or Release Off

Vision systems come in two basic configurations: imaging arrays and linear arrays.

You need a device to sense boxes passing on a conveyor, a sensing distance of 5 feet, that will have all sensor units that require power on one side of conveyor. What is the best sensor to use?

The photoelectric margin parameter is also called gain multiplier.

Vision systems can be use to count the number of holes or features on a part, but are not capable of measuring the size the features.

The triac offers the designer an economical and versatile means of accurately controlling AC power.

The __________type of capacitive proximity sensors is one of two types available.

The application calls for a sensor to detect metal parts at a fixed distance greater than 60 mm from the sensor location. Access from one side only is permitted.What is the best sensor to use?

Photoelectric sensors have five components that include a light source, light detector, logic circuit, lens, and output switching device.

Match the device t o the schematic symbol. -Shockley diode

The conduction angle is the angle in degrees when the SCR turns on.

Triacs operate mostly in quadrant(s)

Match the the correct lighting configuration with lighting application. -Oblique lighting

To protect the SCR from dv/dt false triggering, an LC snubber circuit is used.

Like the SCR, the Shockley diode remains in the on -state until the forward current drops below the holding current.

Electronic sensors can be wired in AND type of circuits but the output electronics does not permit OR type of logic to be used.

Introduction to Industrial Control Systems, Discrete Control Input and Output Devices

Solidstate Devices in Industrial Applications, Operational Amplifiers and Linear ICS

Analog Processes Control Devices, Sensors and Safety

DC Motors, Control Circuits, AC Motors and Variable Speed Drives

Special Purpose Motor, Control Devices and Programmable Logic Controllers

Embedded Microcontrollers, Open and Closed Loop Process Control

Industrial Robots, Automation Systems and Data Communication Between Intelligent Machines

Filters