HEG Electrical Maintenance Officer Interview Questions and Answers for Freshers

Q1. Explain functions of zener diode and voltage regulation
Ans. 
Zener diode functions as a voltage regulator by maintaining a constant output voltage despite variations in input voltage.
• Zener diode conducts in reverse bias at a specific voltage called the breakdown voltage

• It maintains a constant voltage across its terminals, useful for voltage regulation in circuits

• Used in voltage stabilizers, voltage references, and surge protectors

• Helps protect sensitive components from voltage s
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Q2. Tell us about CMOSFET
Ans. 
CMOSFET stands for Complementary Metal-Oxide-Semiconductor Field-Effect Transistor, a type of transistor used in integrated circuits.
• CMOSFET is a type of field-effect transistor that uses both p-type and n-type MOSFETs.

• It is widely used in digital integrated circuits due to its low power consumption.

• CMOSFETs have high input impedance and can be easily integrated into complex circuits.

• Example: CMOS technology is used in...read more
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Q1. Electronics, networks , machines
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Q1. Electronics, machines, power systems.
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15 hard aptitude and data interpretation questions were provided to solve in 1 minute each.

Q1. Technical test consisting of 30 questions, it was pretty easy.
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Q1. This was technical interview. Cannot really say what exactly they'll ask because my mates who were interviewed after and before me got asked completely different types of questions and problems. I was most...read more
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Q2. The interviewers will be really experienced, like 20, 25 years. They probably won't ask you therorotical stuff.
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Q1. Electrical related, mechanical ,plc, molding m/c
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Q1. Project related, kaizen, improvement activities.
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Q1. Family background, salary related, normal things.
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Q1. WHAT COVERS YOUR INTEREST IN MOLEX AND PRODUCTS
Ans. 
I am interested in Molex and its products because of their innovative technology and impact on various industries.
• Innovative technology used in Molex products

• Impact of Molex products on various industries

• Opportunities for growth and learning at Molex

• Strong reputation and history of success
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Q2. SUBJECTS RELATED TO MOLDING AND CAST PRODUCTS
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Round duration - 30 minutes
Round difficulty - Easy

Q1. How do you search for a node in a linked list?
Ans. 
To search for a node in a linked list, iterate through the list and compare each node's value with the target value.
• Start at the head of the linked list

• Iterate through each node by following the 'next' pointer

• Compare the value of each node with the target value

• Return the node if found, otherwise return null
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Q2. How do you detect a loop in a linked list?
Ans. 
To detect a loop in a linked list, we can use Floyd's Cycle Detection Algorithm.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps.

• If there is a loop, the two pointers will eventually meet.

• Alternatively, we can use a hash set to store visited nodes and check for duplicates.
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Q3. Implement a stack using a singly linked list.
Ans. 
Implement a stack using a singly linked list
• Create a Node class with data and next pointer

• Create a Stack class with top pointer pointing to the top of the stack

• Implement push, pop, and peek operations by manipulating the linked list

• Example: Node class - Node { int data; Node next; }
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Round duration - 40 minutes
Round difficulty - Easy

Q1. What is the top view of a binary tree?
Ans. 
The top view of a binary tree shows the nodes visible from the top when looking down from the root node.
• The top view of a binary tree is the set of nodes visible from the top when looking down from the root node.

• Nodes at the same horizontal distance from the root are considered at the same level in the top view.

• If multiple nodes are at the same horizontal distance, only the topmost node at that level is included in the...read more
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Q2. Explain the process of deleting a node from a linked list, covering all possible cases.
Ans. 
Deleting a node from a linked list involves updating pointers to maintain the list's integrity.
• Identify the node to be deleted by traversing the list

• Update the previous node's next pointer to skip the node to be deleted

• Free the memory allocated to the node to be deleted
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