WORKSHOP TECHNOLOGY QUIZ

Tandem drawing of wires and tubes is necessary because

Surface finish improves after every drawing stage

It is not possible to reduce at one stage

Accuracy in dimensions is not possible otherwise

Annealing is needed between stages

TRUE ANSWER : ?
YOUR ANSWER : ?

In piercing operation, the clearance is provided on

Die

Punch

Half on the punch and half on the die

Either on punch or die depending upon designer's choice

TRUE ANSWER : ?
YOUR ANSWER : ?

During hot working of metals

Porosity of the metal is largely eliminated

All of the listed here

Mechanical properties are improved due to refinement of grains

Grain structure of the metal is refined

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following material will require the largest size of riser for the same size of casting?

Steel

Aluminium

Cast iron

Copper

TRUE ANSWER : ?
YOUR ANSWER : ?

The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as

Cold heading

Hot piercing

Extrusion

Cold peening

TRUE ANSWER : ?
YOUR ANSWER : ?

Shift is a casting defect which

Occurs as sand patches on the upper surface of a casting

Occurs near the ingates as rough lumps on the surface of a casting

Results in a mismatching of the top and bottom parts of a casting

Results in general enlargement of a casting

TRUE ANSWER : ?
YOUR ANSWER : ?

A file removes the metal during

Return stroke

Forward stroke

Both forward and return strokes

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The cross-section of a chisel is usually

Hexagonal

Rectangular

Square

Octagonal

TRUE ANSWER : ?
YOUR ANSWER : ?

A casting defect which results in general enlargement of a casting is known as

Sand wash

Swell

Scab

Shift

TRUE ANSWER : ?
YOUR ANSWER : ?

The teeth of hacksaw blade are bent

May be bent in any direction

Towards right

Towards left

Alternately towards right and left and every third or fourth left straight

TRUE ANSWER : ?
YOUR ANSWER : ?