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Electronic Sensor Applications

Authored by David Kriegel

Professional Development

10th Grade - Professional Development

Used 52+ times

Electronic Sensor Applications
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Devices consisting of a glass tube containing two small ferromagnetic (easily magnetized) metal reeds are called __________.

magnetic reed switches

hall-effect sensors

photoelectric sensors

capacitive sensors

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The magnetic reed switch is a fast operating, single-pole, single-throw switch with a __________.

N.O. contact

N.C. contact

transistor output

None of the above

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

__________ materials conduct magnetic lines of force very well.

Ferromagnetic

Paramagnetic

Diamagnetic

All of the above

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

__________ materials, such as aluminum and platinum, conduct magnetic lines of force poorly.

Ferromagnetic

Paramagnetic

Diamagnetic

Both Ferromagnetic and Paramagnetic

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The Hall-Effect sensor uses the principle of __________ to sense the presence of a magnetic object.

inductive reactance

capacitive reactance

transduction

specular reflection

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A Hall-Effect sensor that senses only __________ can help avoid false triggering of the sensor.

metallic objects

magnetic objects

one magnetic polarity

None of the above

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the Hall effect sensor's amplifier is __________, the output of the switch will rapidly change from one state to the other when a magnetic field is sensed by the device.

a NPN transistor

a PNP transistor

analog

digital

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