Workshop Technology MCQ Questions & Answers | Mechanical Engineering

An auger is a drilling device, or drill bit, that usually includes a rotating helical screw blade called a "flighting" to act as a screw conveyor to remove the drilled out material. The rotation of the blade causes the material to move out of the hole being drilled.

The parts of circular cross-section which are symmetrical about the axis of rotation are made by Hot spinning

The recrystallisation temperature of steel is 800°C

The teeth of hacksaw blade are bent Alternately towards right and left and every third or fourth left straight

The operation of bending a sheet of metal along a curved axis is known as Forming

In forehand welding, the angle between the welding torch and the work is more as compared to backhand welding. This difference in the angle of the torch makes the two techniques distinct.

Forehand Welding: In this technique, the welding torch is held at an angle greater than 90 degrees in relation to the direction of the weld. This means the torch points slightly forward in the direction of welding. It is often used for applications where deeper penetration and faster travel speeds are required.

Backhand Welding: In contrast, backhand welding involves holding the torch at an angle less than 90 degrees, with the torch pointing slightly backward in the direction of welding. It is commonly used when a more shallow weld with less penetration is desired.

So, the angle is "more" acute in forehand welding compared to backhand welding. This distinction in torch angles allows welders to control the depth and profile of the weld bead to suit the specific requirements of the welding project.

Electron beam welding (EBW) is a fusion welding process in which a beam of high-velocity electrons is applied to two materials to be joined.
EBW is often performed under vacuum conditions to prevent dissipation of the electron beam.

Structural shapes that can be made with this metal forming process include I-beams, H-beams, T-beams, U-beams, angle iron, channels, bar stock, and railroad rails.
The most commonly rolled material is structural steel.
It is made by Hot rolling.

A hacksaw is a fine-toothed saw, originally and mainly made for cutting metal. On hacksaws, as with most frame saws, the blade can be mounted with the teeth facing toward or away from the handle, resulting in cutting action on either the push or pull stroke.

V-Blocks are precision metalworking jigs typically used to hold round metal rods or pipes for performing drilling or milling operations.
They consist of a rectangular steel or cast iron block with a 90 degree channel rotated 45 degrees from the sides, forming a V-shaped channel in the top.