Question 1

If a photoelectric sensor has a margin of 20, then the light received by the sensor is 20 larger than the light necessary to turn on the sensor.

Accepted Answer

A margin of 20 in the context of a photoelectric sensor means that the amount of light received by the sensor is 20 times larger than the minimum amount of light required to activate or turn on the sensor.

Question 2

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

Electronic sensors can be wired to implement both AND and OR type logic circuits through the use of appropriate wiring and electronic components, allowing for versatile logic operations in electronic systems.

Question 3

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

Vision systems are not only capable of counting the number of holes or features on a part but can also measure the size of these features with high accuracy, depending on the system's resolution and calibration.

Question 4

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

Accepted Answer

Vision systems for range finding, such as those used in stereoscopic vision, require at least two cameras to mimic human binocular vision, allowing the system to calculate depth by comparing the images from the two cameras.

Question 5

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

Accepted Answer

Vision systems utilize both imaging arrays, which capture two-dimensional images, and linear arrays, which scan through a line at a time, to process visual information for various applications.

Question 6

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

Accepted Answer

The answer of The __________type of capacitive proximity sensors is...

Question 7

Inductive type sensors could detect a part that had __ material present

Accepted Answer

Inductive type sensors are designed to detect metallic objects, and copper is a metal. These sensors work by generating an electromagnetic field and detecting changes in this field caused by the presence of a metal.

Question 8

If metal switch boxes are passing the sensor location at 30 mm then the best choice for a sensor would be

Accepted Answer

Inductive proximity sensors are ideal for detecting metal objects, making them suitable for detecting metal switch boxes.

Question 9

If bottles of shampoo are passing the sensor location at a 100 mm distance and the sensor could be mounted on either side of the conveyor, then the best choice for a sensor would be

Accepted Answer

The answer of If bottles of shampoo are passing the...

Question 10

If pill boxes are passing the sensor location at a 40 mm distance and the sensor can only be mounted on one side of the conveyor, then the best choice for a sensor would be

Accepted Answer

The answer of If pill boxes are passing the sensor...

Question 11

The diffused mode sensor used when high background light is present is

Accepted Answer

Background suppression diffused mode sensors are specifically designed to operate effectively in environments with high background light. They can distinguish between the target and the background based on the distance, ignoring the light from behind the target.

Question 12

A current sinking output

Accepted Answer

A current sinking output has current flowing into the output and is typically associated with an NPN output transistor.

Question 13

The sensor output that has 100 percent isolation between the sensor power and the power of the interfaced device.

Accepted Answer

The correct answer is "None of the above" because none of the options listed inherently guarantee 100 percent isolation between the sensor power and the power of the interfaced device. Isolation typically requires specific design considerations such as the use of opto-isolators, transformers, or other isolating components, which are not explicitly mentioned in any of the given choices.

Question 14

When you match a sensor output to a controller input you should

Accepted Answer

The answer of When you match a sensor output to...

Question 15

Analog distance sensors are available in photoelectric and ultrasonic configurations. Select the true statement.

Accepted Answer

Photoelectric sensors are known for their accuracy in distance measurement, especially when compared to ultrasonic sensors, which can be affected by environmental conditions such as temperature and air currents.

Question 16

You need a sensor with high margins to count very reflective objects 100 mm from the sensor in a dirty enviroment. What is the best sensor to use?

Accepted Answer

Transmitted beam photoelectric sensors are ideal for detecting objects in dirty environments because they have a separate emitter and receiver, creating a strong signal that is less affected by surface conditions or reflectivity of the object. This setup allows for reliable detection even in challenging conditions.

Question 17

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

Retroreflective photoelectric sensors are ideal for this application because they can detect objects up to several feet away and only require power and mounting on one side of the conveyor. The reflector placed on the opposite side reflects the light back to the sensor, allowing for efficient detection of passing boxes.

Question 18

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

The answer of The application calls for a sensor to...

Question 19

The application calls for a sensor to detect the leading edge of plastic parts at a fixed distance about than 20 mm from the sensor location. Access from one side only is permitted. What is the best sensor to use?

Accepted Answer

The answer of The application calls for a sensor to...

Question 20

The application calls for a sensor to detect small parts passing within a few mm of the sensor location. Access from one side only is permitted. What is the best sensor to use?

Accepted Answer

The answer of The application calls for a sensor to...

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

If a photoelectric sensor has a margin of 20, then the light received by the sensor is 20 larger than the light necessary to turn on the sensor.

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

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.

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

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

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

Inductive type sensors could detect a part that had __ material present

If metal switch boxes are passing the sensor location at 30 mm then the best choice for a sensor would be

If bottles of shampoo are passing the sensor location at a 100 mm distance and the sensor could be mounted on either side of the conveyor, then the best choice for a sensor would be

If pill boxes are passing the sensor location at a 40 mm distance and the sensor can only be mounted on one side of the conveyor, then the best choice for a sensor would be

The diffused mode sensor used when high background light is present is

A current sinking output

The sensor output that has 100 percent isolation between the sensor power and the power of the interfaced device.

When you match a sensor output to a controller input you should

Analog distance sensors are available in photoelectric and ultrasonic configurations. Select the true statement.

You need a sensor with high margins to count very reflective objects 100 mm from the sensor in a dirty enviroment. What is the best sensor to use?

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 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?

The application calls for a sensor to detect the leading edge of plastic parts at a fixed distance about than 20 mm from the sensor location. Access from one side only is permitted. What is the best sensor to use?

The application calls for a sensor to detect small parts passing within a few mm of the sensor location. Access from one side only is permitted. What is the best sensor to use?