Neural Networks and Interface Test.

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Oct 20, 2013 (4 years and 19 days ago)

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©IPK170901



Neural Networks and Interface Test.


Decide whether each of the statements below is True or False and shade in the box corresponding to
your answer on the marking sheet.


PLEASE DO NOT WRITE ON THIS QUESTION PAPER.

USE SCRAP PAPER FOR YOUR WORKING OUT.


A correct answer gains 1 mark, an incorrect answer looses 1 mark and no attempt gains 0 marks.


1).

A Neural Network is ideal for keeping accurate financial accounts.


2).

A Neural Network contains many simple processors.


3).

A Neural Network stores info
rmation in the connections between the processor elements.


4).

A Neural Network is programmed with instructions.


5).

A Neural Network is able to learn and adapt to conditions.


6).

A Neural Network is ideal for pattern recognition.


7).

The Neurones in a

Neural Network are essentially non
-
linear processors.


8).

A Neural Network is not suitable for use in weather forecasting.


9).

Neural Networks are also known as Adaptive Systems.


10).

A Neural Network has spare memory elements waiting to receive inform
ation.


11).

A Neural Network usually has its neurones arranged in layers.


12).

A Neural Network is not suitable for financial forecasting.


13).

A tri
-
state buffer has three output states, ON, OFF and DON'T CARE.


14).

A tri
-
state buffer is needed when c
onnecting devices to the data bus of a computer.


15).

Tri
-
state buffers prevent data bus contentions.


16).

An output port must be connected through a tri
-
state buffer.


17).

An input device must write its data into a data latch.


18).

An optical shaft en
coder is used to determine the angular position of a shaft.


19).

A four bit optical shaft encoder can give a resolution of 22.5

.


20).

A binary shaft encoder is less susceptible to errors than a Gray shaft encoder.



©IPK170901

21).

A photodiode can generate a volta
ge when placed in light.


22).

An opto
-
switch consists of a LED and a photodiode.


23)

When an obstacle passes in the gap in a reflective
-
opto
-
switch it reduces the light reaching

the photodiode.


24).

When operated in reverse bias the current passing thr
ough the diode is proportional to the

light intensity.


25).

When an obstacle passes in front of a slotted opto
-
switch it increases the light reaching the

photodiode.


26).

Infra
-
red LEDs are used in opto
-
switches to prevent them being seen by burglars.


27).

A computer mouse often contains two slotted opto switches for detecting the movement of

the ball.


28).

A stepper motor will rotate continuously when connected to a battery.


29).

A four pole stepper motor will rotate in jumps of 7.5

.


30).

Stepper

motors are usually more powerful than ordinary motors.


31).

Stepper motors are used when precise angular rotation is needed.


32).

A stepper motor will be found in a floppy disk drive.


33).

A dot matrix display only allows numbers to be displayed.


34).

A scanned dot matrix display is often dim because the current is shared by all the LEDs in a

column.


35).

A Schmitt trigger has hysteresis.


36).

The output of a Schmitt trigger changes state at two distinct switching levels.


37).

An inverting op
-
amp S
chmitt trigger with both resistors equal, will have switching levels

equal to half of the supply voltages of the op
-
amp.


38).

Schmitt triggers are used to clean noisy data signals.


39).

A comparator switches faster than a Schmitt trigger because it does

not have positive

feedback.


40).

A Schmitt trigger switches faster than a comparator because it does not have positive

feedback.