SSPM Medical College & Lifetime Hospital Engineer Interview Questions and Answers

C++ is an extension of C with object-oriented programming features.

• C++ supports classes and objects while C does not.

• C++ has better support for polymorphism and inheritance.

• C++ has a standard template library (STL) while C does not.

• C++ allows function overloading while C does not.

• C++ has exception handling while C does not.

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

• OOPs focuses on creating objects that contain both data and functions to manipulate that data.

• It emphasizes on encapsulation, inheritance, and polymorphism.

• Examples of OOPs languages are Java, C++, Python, etc.

Polymorphism is the ability of an object to take on many forms.

• It allows objects of different classes to be treated as if they were objects of the same class.

• It is achieved through method overriding and method overloading.

• Example: A shape class can have different subclasses like circle, square, triangle, etc. and all of them can be treated as shapes.

• Example: A method can have different implementations in different clas...read more

Data abstraction is the process of hiding implementation details and showing only the necessary information to the user.

• It is a way of organizing complex systems

• It allows users to interact with complex systems without needing to understand the underlying details

• It helps to reduce complexity and increase efficiency

• Examples include object-oriented programming and APIs

A C program to reverse a given string.

• Declare a character array to store the input string.

• Use a loop to iterate through the string and swap the characters.

• Print the reversed string.

Swapping two numbers using macro in C language

• Use a temporary variable to store the value of one number

• Assign the value of the second number to the first number

• Assign the value of the temporary variable to the second number

• Define a macro for swapping the numbers

• Example: #define SWAP(a,b) {int temp; temp=a; a=b; b=temp;}

The current in a transformer is made by inducing voltage across the primary coil.

• The primary coil of a transformer is connected to an alternating current (AC) source.

• The alternating current in the primary coil creates a changing magnetic field.

• This changing magnetic field induces a voltage across the secondary coil.

• The induced voltage in the secondary coil causes a current to flow through it.

• The current in the secondar...read more

DC shunt motors are a type of direct current motor that have a parallel field winding and a series armature winding.

• DC shunt motors have a parallel field winding and a series armature winding.

• They are commonly used in applications that require constant speed and moderate starting torque.

• The speed of a DC shunt motor can be controlled by varying the field current or the armature voltage.

• DC shunt motors are widely used i...read more

A DC shunt motor is a type of direct current motor that has a shunt field winding connected in parallel with the armature winding.

• The field winding and armature winding are connected in parallel

• The shunt motor has a relatively constant speed-torque characteristic

• The speed of the motor can be controlled by varying the field current

• The motor provides good starting torque

• The shunt motor is commonly used in applications wh...read more