Automation viva questions with answers

 1) what is PLC ?

Ans:- PLC stands for Programmable Logic controller. PLC is a device that is used to automate industrial process such as manufacturing plant, waste water treatment, ore processing plant.  PLC specially designed for operate under Harsh industrial environment.

2) What is fix PLC ?

Ans:- It is a compact PLC in which there is no modification can be done, in other words we cannot add more input and output according to our requirement.

3) What is modular PLC ?

Ans:- In this PLC modification can be done, we can add input and output as per our requirement.

4) How how AC input module ?

Ans:- 80 to 115 volt

5) How much DC input module ?

Ans:- 24 volt

6) How much Analog input module ?

Ans:- 20 mV (milli-volt)

7) What is automation ?

Ans:- The automation means, automatic manufacturing without human control.

8) What are advantage of PLC ?

Ans:- a] Less wiring 

b] More flexibility 

c] Lower cost

d] Faster response time

9) What are the elements of PLC ?

Ans:- a] Input Module 

b] Output Module

c] Power Supply

d] Processor

e] Programming Device

10) Application of PLC ?

Ans:- a] Food processing Industry 

b] Traffic light control 

c] Chemical Industry

d] Steel Industry 

Automation UNIT TEST I [2020-21EVEN TERM]

 
GOVERNMENT POLYTECHNIC, MUMBAI

Name of Dept.: - Electronics Engineering

UNIT TEST I [2020-21EVEN TERM]

 

Course: Automation                                                                                     Course Code: -EC19411

Duration: - 1Hr                                              Marks: -20                          Class: -TYEC (1^st& 2^nd Shift)

Q.1  Attempt any three (3*2)                                                                                                  06

 

a.  Define the automation                                                                      .             (CO1, R)

b.  List the types of PLC Instructions                                                                            (CO2, R)

c.  Explain the OSR instruction.                                                                           (CO2, U)

d.  Explain the SCP instruction                                                                               (CO2, U)

Q.2  Attempt any two (2*4)                                                                                                  08

 

a.       Differentiate between Fixed and modular PLC.                                             (CO1, A)

b.       Design ladder logic for AND,OR gate using XIC Instruction                           (CO2, A)

c.       Draw diesel generator system Explain it’s working                                         (CO3, U)

 

Q.3  Attempt any one(1*6)                                                                                                  06

 

a.       Draw the AC input module. Explain the function of each block                                    (CO1, U)

b.        Explain the TON,TOFF and RTO instruction of PLC                                                 (CO2, U)

c.       Design ladder logic for traffic light controller                                                              (CO3, A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CO no	CO1	CO2	CO3	Levels	R	U	A
Marks	12	16	10	Marks	04	20	14

 

How do we recognize fake and real battery of phone ?

 

Hello my friends welcome to this blog post. Today we know some step to identify between fake and real battery of phone/mobile. As you know that in the name of company brand name, many fraud people sell battery, which is completely duplicate or you can say local product.

Here I explain some basic step to recognize between fake & real battery of phone/mobile.

Step 1 Smell battery from nose :-  In your hand when you smell local/Fake battery, you found some smell of (Lithium ion). But in case of Real/Original battery you will not found any type of (Lithium-ion) smell.

You might think here, why fake battery smell (lithium-ion) & in real battery we not found any smell of (Lithium-ion) ???

Because in fake battery there is not any insulation covered, that’s why from battery constantly (Lithium-ion) gas releases and that's why, we able to smell easily. But in Real/Original battery there is insulation is provided to protect battery (Lithium lion) that’s why we not able to smell.

Step 2  In fake battery there is no barcode :- Whenever you go to buy mobile battery, you should check the battery backside there is barcode or not. If you found barcode backside then it's mean, it is Real/Original battery. But when you not found barcode backside of battery then it's 100% fake or duplicate battery.

Steps 3  Check weight of your real battery & fake battery whatever mobile shopkeeper give you :-

If your mobile battery is damage, so you should take your damage real battery from your phone & go to mobile shop.

Shopkeeper gives you some brand battery of your phone, so what you have to do first is after checking above all two steps this third last steps is very accurate & correctly differentiate between real and fake battery.

What you have to do is, in your one hand put your damage real battery & another hand put whatever battery given by shopkeeper. And now check it's weight.

You find that real battery weight is greater than fake battery.

So that You can easily differentiate between real & fake battery.

"Multi-Copta" pro Boys

                                          

Hi friends my name is Rajakumar, I am the student of Government Polytechnic Mumbai. As like every year, there are many batches of students make their unique projects in their final year.

So first of all let me introduce about my group members, in my group members there are total 5 members are there. :-

They are:- 

"Multi-Copta" pro boys

So we all meet together and make a plan to do something unique & different from our expectation. So in the first time, our group members decided to make a human lifting drone, but these idea are not fit in our budget & not also fitted in sponsor by college.

Then we all decided new idea, that is "Multi-Copta",  Here first of all let me know you that, the meaning of "Multi-Copta" is, a drone which can perform various task.  

 For ex. i) Food delivery

ii) Medical purpose

iii) Agricultural sector

iv) In military Army for lifting tools & weapons

As I talk about our budget of this project, then it is around 50K. For your kind information, this project is 90% Sponsored and 10% self contributed.

You might think that & in your mind many questions are raises ? Right

That is, How and why they sponsored us?

*The top reason why GP Mumbai sponsored for our project.

✓They see value & uniqueness.

✓They see our (Passionate mind set towards this project)

✓Taking fully responsibility 

✓Brave Confidence in us

✓Many more implementation

✓They see in our project that is, it's really add value in many sectors.

✓They see future upcoming demand.

We really very thankful to GP Mumbai. They really try to understand our great idea and allow to implement and sponsored us. We all are very thankful to our Principal mam and our all department faculties, who support in our project.

We all are very thankful to our group members for their hard work and great effort towards this project.

Thank you!

We present our project in the front of NBA (National Board of Accreditation)

Explain project design & its's working principle

Consumers Electronic MCQ

Consumers Electronic MCQ

Linear Integrated Circuit (LIC) Assignment no.1

Linear Integrated Circuit (LIC) Assignment no.1 

Notes of Spread Spectrum Modulation

Notes of Spread Spectrum Modulation  

Draw and explain, Block diagram of Frequency Hopped Spread Spectrum (FHSS)

 

Draw and explain, Block diagram of Direct Sequence Spread Spectrum (DSSS)