Polmon Instruments Assistant Engineer Interview Questions, Process, and Tips for Freshers

Q1. What is multiplexer
Ans. 
A multiplexer is a device that selects one of several input signals and forwards the selected input into a single line.
• Multiplexers are used in digital circuits to reduce the number of input/output lines required to transmit data.

• They are also used in communication systems to combine multiple signals into a single transmission line.

• Multiplexers can be implemented using logic gates or integrated circuits.

• Examples of mul...read more
Answered by AI
View 1 more amswer
Q2. What is data type and what are data types in c programming
Ans. 
Data type is a classification of data items based on the type of value they hold. C programming has various data types.
• Data type determines the type of data that can be stored in a variable

• C programming has basic data types like int, float, char, double, etc.

• C programming also has derived data types like arrays, pointers, structures, unions, etc.
Answered by AI
View 1 more amswer
Q3. What is the name of AC to DC converter IC
Ans. 
The name of AC to DC converter IC is dependent on the specific IC being used.
• There are many different AC to DC converter ICs available on the market

• Some popular AC to DC converter ICs include the LM7805, LM7812, and LM317

• The specific IC chosen will depend on the requirements of the circuit being designed
Answered by AI
Add your answer
Q4. Mainly we use 0804 IC for ADC
Add your answer
Q5. What is an array in C
Ans. 
An array in C is a collection of elements of the same data type stored in contiguous memory locations.
• Arrays are declared using square brackets []

• Elements in an array can be accessed using their index number

• Arrays can be initialized during declaration or later using a loop

• Example: int arr[5] = {1, 2, 3, 4, 5};

• Example: for(int i=0; i<5; i++) { arr[i] = i+1; }
Answered by AI
Add your answer
Q6. An array is a homogenous data type it collects the same type of data types.
Add your answer
Q7. What are the layers of osi model
Ans. 
The OSI model has 7 layers that define how data is transmitted over a network.
• The layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has a specific function and communicates with the layers above and below it.

• For example, the Physical layer deals with the physical transmission of data, while the Application layer deals with user interfaces and application-level protoc...read more
Answered by AI
Add your answer
Q8. 1.Physical layer 2.Data link layer 3.network layer 4.Transport layer 5.Session layer 6.Presentation layer 6.Application layer
Add your answer

Mental ability and Reasoning and english