Question 1

____ are devices that exhibit a change of resistance with a change of temperature.

Accepted Answer

A)   Temperature reflective resistors
B)   Temperature distressed resistors
C)   Temperature staged resistors
D)   Temperature dependent resistors D

Question 2

When the 741 op amp is used as an inverted amplifier, the zener diode produces a constant positive  voltage at the noninverting input of an amplifier and is used as a reference.

Accepted Answer

A) True 
 B)False

Question 3

Schematic diagrams, in a universally accepted practice, point the arrow through a resistor toward the  top of the circle to indicate the use of an RTD, and toward the bottom of the circle to indicate the use  of a thermistor.

Accepted Answer

A) True 
 B)False

Question 4

During normal operation, the noninverting input of the amplifier is connected to a ____.

Accepted Answer

A)   gunn diode
B)   zener diode
C)   square diode
D)   dipole diode

Question 5

____ are constructed of metallic oxides and exhibit a negative temperature coefficient.

Accepted Answer

A)   Thermistors
B)   Thermocouples
C)   Thermnodes
D)   Thermoconductors

Question 6

RTDs are constructed of metal and have a ____.

Accepted Answer

A)   negative temperature coefficient
B)   negative temperature bias
C)   positive temperature coefficient
D)   positive temperature bias

Question 7

As long as the noninverting input is more negative than the inverting input, the output of the amplifier  will be high.

Accepted Answer

A) True 
 B)False

Question 8

The advantage of the RTD is that it has a low temperature coefficient.

Accepted Answer

A) True 
 B)False

Question 9

The operational amplifier is often used as a level detector or comparator.

Accepted Answer

A) True 
 B)False  True

Question 10

If the zener diode is replaced with a ____, the reference voltage can be set to any value desired.

Accepted Answer

A)   voltage divider
B)   voltage inverter
C)   voltage rectifier
D)   voltage bridge A

Exam 39: The 741 Op Amp Level Detector

____ are devices that exhibit a change of resistance with a change of temperature.

Correct Answer
verified
D

When the 741 op amp is used as an inverted amplifier, the zener diode produces a constant positive voltage at the noninverting input of an amplifier and is used as a reference.

Correct Answer
verified

Schematic diagrams, in a universally accepted practice, point the arrow through a resistor toward the top of the circle to indicate the use of an RTD, and toward the bottom of the circle to indicate the use of a thermistor.

Correct Answer
verified

During normal operation, the noninverting input of the amplifier is connected to a ____.

Correct Answer
verified

____ are constructed of metallic oxides and exhibit a negative temperature coefficient.

Correct Answer
verified

RTDs are constructed of metal and have a ____.

Correct Answer
verified

As long as the noninverting input is more negative than the inverting input, the output of the amplifier will be high.

Correct Answer
verified

The advantage of the RTD is that it has a low temperature coefficient.

Correct Answer
verified

The operational amplifier is often used as a level detector or comparator.

Correct Answer
verified
True

If the zener diode is replaced with a ____, the reference voltage can be set to any value desired.

Correct Answer
verified
A

Exam 39: The 741 Op Amp Level Detector

____ are devices that exhibit a change of resistance with a change of temperature.

Correct AnswerverifiedD

When the 741 op amp is used as an inverted amplifier, the zener diode produces a constant positive voltage at the noninverting input of an amplifier and is used as a reference.

Correct AnswerverifiedShow Answer

Schematic diagrams, in a universally accepted practice, point the arrow through a resistor toward the top of the circle to indicate the use of an RTD, and toward the bottom of the circle to indicate the use of a thermistor.

Correct AnswerverifiedShow Answer

During normal operation, the noninverting input of the amplifier is connected to a ____.

Correct AnswerverifiedShow Answer

____ are constructed of metallic oxides and exhibit a negative temperature coefficient.

Correct AnswerverifiedShow Answer

RTDs are constructed of metal and have a ____.

Correct AnswerverifiedShow Answer

As long as the noninverting input is more negative than the inverting input, the output of the amplifier will be high.

Correct AnswerverifiedShow Answer

The advantage of the RTD is that it has a low temperature coefficient.

Correct AnswerverifiedShow Answer

The operational amplifier is often used as a level detector or comparator.

Correct AnswerverifiedTrue

If the zener diode is replaced with a ____, the reference voltage can be set to any value desired.

Correct AnswerverifiedA

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified
A