Product Engineer Intern Interview Questions and Answers for Freshers

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.

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