Bharat Electronics Apprentice Trainee Interview Questions and Answers

Screw threads and pitch distance

• Screw threads are helical ridges on a cylindrical surface.

• Pitch distance is the distance between two adjacent threads.

• Threads can be classified as coarse or fine based on their pitch distance.

• The pitch distance is measured in millimeters or inches.

• The pitch distance determines the tightness of the fit between the screw and the nut.

• Threads can be external or internal depending on whether ...read more

Least counts are the smallest measurable values of a measuring tool.

• Least count is important for accurate measurements.

• It is the smallest value that can be measured by a tool.

• Examples include vernier calipers, micrometers, and dial gauges.

• The least count of a tool is determined by its scale markings and the number of divisions on the scale.

• The formula for calculating least count is: LC = (scale range) / (number of divi

Types of fits refer to the different ways in which two parts can be joined together.

• Interference fit: where one part is slightly larger than the other to create a tight fit

• Clearance fit: where there is a small gap between the two parts

• Transition fit: where there is a small overlap between the two parts

• Force fit: where one part is pressed or forced into the other

• Examples include piston and cylinder, gears, and bearings