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Some doubtful questions in LabVIEW Fundamentals Exam

I know there are 20k reasons why I'm wrong on this but.....

 

Isn't it generally a good idea NOT to measure a signal right on the edge of the range of a measurement system?  If I need to measure 10V on a 0-10V system, I would apply a gain of <1 so that I'm not going out of range when my signal fluctuates...... Am I the only one to think this?  Sure I lose resolution but otherwise I lose my entire signal......

 

For me, the answer to Question 2 would be the the 5V signal for a 0-10V measuring range.

 

But my last I/O work is a few years back....

 

Shane.

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Message 31 of 55
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Ravens Fan wrote:

 

2.All of the following statements regarding SubVIs are true, EXCEPT:

A   They require less memory.
B   They allow for easier debugging.
C   They allow you to use the same code for many future applications.
D   All of the above statements are true. Correct.  Note.  SubVI's can use a little bit more memory, but they also allow you to replace duplicated code thus greatly reducing the memory requirements.


Ouch! Since the question has an "except", does it mean that all the above statements are actually false if we select D? 😮

 

The subVI memory issue is probably only true if you use more than one instance of the subVI and it's not set to reentrant.

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Message 32 of 55
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All of the following statements regarding SubVIs are true, EXCEPT:

A   They require less memory.
B   They allow for easier debugging.
C   They allow you to use the same code for many future applications.
D   All of the above statements are true.

 

Since A is False D is also False and meets the criteria of a "RIGHT" answer in that it is not true.  <<<< Bad Distractor @D>>>>> Moreover, Statement D Is True if all of Statements A, B or C are true.  Confusing but Statement D cannot ever be the only correct answer.  Who edited the distractors?


"Should be" isn't "Is" -Jay
Message 33 of 55
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these are some of my mind eating ques pls friend help me to find out answers

 

1.The DAQ Assistant can perform all of the following operations, EXCEPT:

A

 Frequency Measurement.

B

 Analog Input.

C

 Digital Input.

D

 Arbitrary Waveform Generation

 

2. which Daq board will allow for the detection of a 2.1 mV change in a signal if a 0-10 volt range was selected

a.12-bit

b.16-bit

c . a&b

d. none of above

 

3.what is the advantage of using for loop over while loop when working with arrays

a.A for loop can tell labview ahead of time how many elements is allocate in the output array.

b. while loops force labview to change the size of an output array after every iteration of the loop.

c.both a& b

d.none of above

 

 

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Message 34 of 55
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1.The DAQ Assistant can perform all of the following operations, EXCEPT:

A

 Frequency Measurement.

B

 Analog Input.

C

 Digital Input.

D

 Arbitrary Waveform Generation

 

 


I feel it should be C: Arbitrary Waveform Generator.

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Message 35 of 55
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3.what is the advantage of using for loop over while loop when working with arrays

a.A for loop can tell labview ahead of time how many elements is allocate in the output array.

b. while loops force labview to change the size of an output array after every iteration of the loop.

c.both a& b

d.none of above

 


I feel c is right.
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Message 36 of 55
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naveenbitsys a écrit:

these are some of my mind eating ques pls friend help me to find out answers

  
  
  
 

 

2. which Daq board will allow for the detection of a 2.1 mV change in a signal if a 0-10 volt range was selected

a.12-bit

b.16-bit

c . a&b

d. none of above

 


See here for details about the resolution of an ADC.

 

With a range of 10V :

 a) Q = 2.44mV    --> >2.1mV

 b) Q = 152.59uV --> <2.1mV

 

--> Correct answer is b

 

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Message 37 of 55
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All of the following are correct ways to view a SubVI on a Block Diagram, EXCEPT:

A  Expanded Node
B  Icon
C  Modular Node
D  Expandable Node



hello  friends i having some doubt on this ques what is modular node in labview

i cant find it and what is the ans of this ques

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Message 38 of 55
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naveenbitsys,

 

You should find this on help right?

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Message 39 of 55
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JB wrote:

naveenbitsys a écrit:

these are some of my mind eating ques pls friend help me to find out answers

  
  
  
 

 

2. which Daq board will allow for the detection of a 2.1 mV change in a signal if a 0-10 volt range was selected

a.12-bit

b.16-bit

c . a&b

d. none of above

 


See here for details about the resolution of an ADC.

 

With a range of 10V :

 a) Q = 2.44mV    --> >2.1mV

 b) Q = 152.59uV --> <2.1mV

 

--> Correct answer is b

 


 

Here is another article for you to read regarding DAQ resolution, etc.  http://zone.ni.com/devzone/cda/tut/p/id/4439

 

In my opinion, these DAQ questions are reasonably easy and, more importantly, pertinent to being a good LabVIEW programmer.

>

"There is a God shaped vacuum in the heart of every man which cannot be filled by any created thing, but only by God, the Creator, made known through Jesus." - Blaise Pascal
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Message 40 of 55
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