Product Engineer Intern Interview Questions and Answers

Micrometer is measured using a micrometer screw gauge.

• Micrometer screw gauge is a precision measuring instrument.

• It consists of a calibrated screw and a thimble.

• The screw is turned until it touches the object being measured.

• The reading is taken from the scale on the thimble.

• The accuracy of measurement is up to 0.01mm or 0.001cm.

• Practice and proper technique are necessary for accurate measurement.

Delegations in JavaScript refer to the process of passing control (delegating) from one object to another.

• Delegations allow objects to share behavior and avoid duplication.

• In JavaScript, delegation is achieved through prototype chaining.

• Delegations help in creating a hierarchy of objects where child objects inherit properties and methods from parent objects.

To reverse an array, use a loop to swap the first and last elements until the middle is reached. To find elements in an array, use a loop to compare each element to the desired value.

• To reverse an array, initialize two pointers at the beginning and end of the array. Swap the elements at the pointers and move the pointers towards the middle until they meet.

• To find elements in an array, use a loop to iterate through each element. Use a conditional statement to check if the elem...read more

const is used for variables that should not be reassigned, while var allows for reassignment

• const is block-scoped, var is function-scoped

• const cannot be reassigned, var can be reassigned

• const must be initialized during declaration, var can be declared without initialization