Question 1

Proximity detectors are designed to detect the presence or absence of some object.

Accepted Answer

A) True 
 B)False  True

Question 2

____ are designed to produce an output voltage that is proportional to the strength of a magnetic field.

Accepted Answer

A)  Reluctors 
B)  Linear transducers 
C)  Hall transducers 
D)  Regulators 
A)  Reluctors 
B)  Linear transducers 
C)  Hall transducers 
D)  Regulators B

Question 3

How can the Hall generator be used to sense position?

Accepted Answer

The Hall generator can be used in a manner similar to a limit switch. If the sensor is mounted beside a piece of moving equipment, and a permanent magnet is attached to the moving equipment, a voltage will be produced when the magnet moves near the sensor. The advantages of the Hall sensor are that it has no lever armor contacts to wear like a common limit switch, so it can operate through millions of operations of the machine.

Question 4

Two factors determine the polarity of the voltage produced by the Hall generator: the direction of current flow and the ____ of the ____ field.

Accepted Answer

A)  polarity; magnetic 
B)  polarity; gravitational 
C)  strength; magnetic 
D)  strength; gravitational 
A)  polarity; magnetic 
B)  polarity; gravitational 
C)  strength; magnetic 
D)  strength; gravitational

Question 5

____________________ detectors operate by emitting a pulse of high frequency sound and then detecting the echo when it bounces off an object.

Accepted Answer

The answer of ____________________ detectors operate by emitting a pulse...

Question 6

The Hall effect was discovered by Edwin H. Hall at Johns Hopkins University in 1979.

Accepted Answer

A) True 
 B)False

Question 7

What determines the amount of voltage produced by the Hall generator?

Accepted Answer

The amount of voltage produced by the Ha

Question 8

____ proximity detectors will sense ferrous metals better than nonferrous.

Accepted Answer

A)  All-metal 
B)  Plastic 
C)  Tank 
D)  Quartz 
A)  All-metal 
B)  Plastic 
C)  Tank 
D)  Quartz

Question 9

Discuss eddy currents as they relate to tank circuits.

Accepted Answer

All-metal detectors operate at radio fre

Question 10

Many ultrasonic sensors have an analog output of voltage or current, the value of which is determined by the ____.

Accepted Answer

A)  size of the detector 
B)  capacitance of the detector 
C)  size of the object 
D)  distance to the object 
A)  size of the detector 
B)  capacitance of the detector 
C)  size of the object 
D)  distance to the object

Question 11

Give an overview of proximity detectors.

Accepted Answer

Proximity detectors are designed to dete

Question 12

Because ____________________ proximity detectors do not depend on metal to operate, they will sense virtually any material such as wood, glass, concrete, plastic, and sheet rock.

Accepted Answer

The answer of Because ____________________ proximity detectors do not depend...

Proximity detectors are designed to detect the presence or absence of some object.

____ are designed to produce an output voltage that is proportional to the strength of a magnetic field.

How can the Hall generator be used to sense position?

Two factors determine the polarity of the voltage produced by the Hall generator: the direction of current flow and the of the field.

____________________ detectors operate by emitting a pulse of high frequency sound and then detecting the echo when it bounces off an object.

The Hall effect was discovered by Edwin H. Hall at Johns Hopkins University in 1979.

What determines the amount of voltage produced by the Hall generator?

____ proximity detectors will sense ferrous metals better than nonferrous.

Discuss eddy currents as they relate to tank circuits.

Many ultrasonic sensors have an analog output of voltage or current, the value of which is determined by the ____.

Give an overview of proximity detectors.

Because ____________________ proximity detectors do not depend on metal to operate, they will sense virtually any material such as wood, glass, concrete, plastic, and sheet rock.

General Principles of Motor Control, Symbols and Schematic Diagrams

Manual Starters and Overload Relays

The Control Transformer, Relays, Contactors, and Motor Starters

Timing Relays, Pressure Switches and Sensors

Float Switches, Flow Switches and Sensors

Limit Switches and Phase Failure Relays

Temperature Sensing, Devices M Solenoid and Motor Operated Valves

Basic Control Circuits and Photodetectors

Schematics, Wiring Diagrams Circuit (1), Timed Starting for Three Motors Circuit (2)

Float Switch Control of a Pump and Pilot Lights Circuit (3), Developing a Wiring Diagram Circuit (1)

Developing a Wiring Diagram Circuit (2) and Developing a Wiring Diagram Circuit (3)

Installing Control Systems and Reading Large Schematic Diagrams

Multiple Push Button Stations and Hand-Off-Automatic Controls

Forward-Reverse Control, Jogging and Inching

Dc Motors and Sequence Control

Solid-State Dc Drives and Starting Methods for DC Motors

Stepping Motors, the Motor and Starting Methods

Autotransformer Starting , Resistor and Reactor Starting for Ac Motors

Wye-Delta Starting, Part Winding Starters

Braking , Consequent Pole Motors, Variable Voltage and Magnetic Clutches

Variable Frequency Control

Troubleshooting, Motor Installation and Developing Control Circuits

Digital Logic and the Bounceless Switch

Programmable Logic Controllers and Start-Stop Push Button Control

Programming a PLC and Analog Sensing for Programmable Controllers

Filters

Exam 8: Hall Effect Sensors and Proximity Detectors

Proximity detectors are designed to detect the presence or absence of some object.

____ are designed to produce an output voltage that is proportional to the strength of a magnetic field.

How can the Hall generator be used to sense position?

Two factors determine the polarity of the voltage produced by the Hall generator: the direction of current flow and the ____ of the ____ field.

____________________ detectors operate by emitting a pulse of high frequency sound and then detecting the echo when it bounces off an object.

The Hall effect was discovered by Edwin H. Hall at Johns Hopkins University in 1979.

What determines the amount of voltage produced by the Hall generator?

____ proximity detectors will sense ferrous metals better than nonferrous.

Discuss eddy currents as they relate to tank circuits.

Many ultrasonic sensors have an analog output of voltage or current, the value of which is determined by the ____.

Give an overview of proximity detectors.

Because ____________________ proximity detectors do not depend on metal to operate, they will sense virtually any material such as wood, glass, concrete, plastic, and sheet rock.

General Principles of Motor Control, Symbols and Schematic Diagrams

Manual Starters and Overload Relays

The Control Transformer, Relays, Contactors, and Motor Starters

Timing Relays, Pressure Switches and Sensors

Float Switches, Flow Switches and Sensors

Limit Switches and Phase Failure Relays

Temperature Sensing, Devices M Solenoid and Motor Operated Valves

Basic Control Circuits and Photodetectors

Schematics, Wiring Diagrams Circuit (1), Timed Starting for Three Motors Circuit (2)

Float Switch Control of a Pump and Pilot Lights Circuit (3), Developing a Wiring Diagram Circuit (1)

Developing a Wiring Diagram Circuit (2) and Developing a Wiring Diagram Circuit (3)

Installing Control Systems and Reading Large Schematic Diagrams

Multiple Push Button Stations and Hand-Off-Automatic Controls

Forward-Reverse Control, Jogging and Inching

Dc Motors and Sequence Control

Solid-State Dc Drives and Starting Methods for DC Motors

Stepping Motors, the Motor and Starting Methods

Autotransformer Starting , Resistor and Reactor Starting for Ac Motors

Wye-Delta Starting, Part Winding Starters

Braking , Consequent Pole Motors, Variable Voltage and Magnetic Clutches

Variable Frequency Control

Troubleshooting, Motor Installation and Developing Control Circuits

Digital Logic and the Bounceless Switch

Programmable Logic Controllers and Start-Stop Push Button Control

Programming a PLC and Analog Sensing for Programmable Controllers

Filters

Two factors determine the polarity of the voltage produced by the Hall generator: the direction of current flow and the of the field.