Raphe mPhibr Mechanical Technician Interview Questions and Answers

Validations are checks performed on data to ensure its accuracy, consistency, and integrity.

• Validations are used to verify that data meets certain criteria or rules.

• They are commonly used in software development to ensure data quality.

• Examples of validations include checking for required fields, data types, and ranges.

• Validations can also be used to prevent invalid or malicious input.

• They help maintain data integrity a

Implement stack data structure

• Use an array or linked list to store elements

• Push operation adds element to top of stack

• Pop operation removes element from top of stack

• Peek operation returns top element without removing it

Global variables are accessible from any part of the program and can be modified by any function.

• Global variables are declared outside of any function.

• They can be accessed and modified by any function in the program.

• If a function modifies the value of a global variable, the new value is visible to all other functions.

• Global variables can be useful for sharing data between functions.

• However, overuse of global variables

Program to transpose a matrix

• Iterate through rows and columns of the matrix

• Swap the elements at (i,j) and (j,i) positions

• Return the transposed matrix

Pre and post fix operators are used to increment or decrement a value before or after it is used in an expression.

• Pre-fix operator (++x) increments the value of x and returns the new value.

• Post-fix operator (x++) returns the value of x and then increments it.

• Both operators can be used with variables of numeric data types.

• They can also be used with pointers to increment or decrement the memory address they point to.

DOL starter is a direct online starter used to start and stop the motor instantly.

• DOL stands for Direct Online.

• It is used to start and stop the motor instantly.

• It is the simplest and cheapest method of starting a motor.

• It consists of a contactor, overload relay, and start and stop push buttons.

• It is used for small motors up to 5 horsepower.

• It is not suitable for large motors as it causes a high starting current.

• Example...read more

There are several types of pumps used in mechanical engineering.

• Centrifugal pumps

• Reciprocating pumps

• Rotary pumps

• Diaphragm pumps

• Gear pumps

• Vane pumps

• Screw pumps

• Jet pumps

• Peristaltic pumps

• Piston pumps

The parts of a pump include impeller, casing, shaft, bearings, seals, and motor.

• Impeller: Rotating component that imparts energy to the fluid.

• Casing: Encloses the impeller and directs the flow of fluid.

• Shaft: Transmits the rotational motion from the motor to the impeller.

• Bearings: Support the shaft and reduce friction.

• Seals: Prevent leakage of fluid along the shaft.

• Motor: Provides the power to drive the pump.

The main reasons for less count in bulk packing are human error, machine malfunction, and inaccurate measurements.

• Human error in counting or packaging

• Machine malfunction or error in the production line

• Inaccurate measurements or weighing of the product

• Lack of quality control or inspection

• Environmental factors such as humidity or temperature

• Improper storage or handling of the product

• Inadequate training of personnel

• Ineffi...read more

The main reason for improper sealing of a bottle can be due to various factors such as damaged cap, incorrect torque, or contamination.

• Damaged cap

• Incorrect torque

• Contamination

Leak test is performed to ensure that there are no leaks in a system. It is mandatory in certain industries.

• To ensure safety and prevent accidents

• To maintain product quality and integrity

• To comply with industry regulations and standards

• Examples: automotive industry, medical devices, HVAC systems

• Different methods of leak testing: pressure decay, vacuum decay, bubble testing, tracer gas testing