Workshop Technology Online Quiz - ObjectiveBooks
Workshop Technology Online Quiz

Workshop Technology Online Quiz

Mechanical Engineering Online Quiz: Workshop Technology

Quiz Questions

01. The low pressure acetylene is produced at the welding site by the chemical reaction between water and calcium carbonate.
02. The correct sequence for preparing a billet for extrusion process is pickling, alkaline cleaning, phosphate coating and lubricating with reactive soap.
03. In a cold chamber die casting machine, a measured quantity of molten metal is brought in a ladle from the melting pot to a chamber and forced into the closed die section by applying hydraulic pressure upon the plunger.
04. If neutral flame is used in oxyacetylene welding, both oxygen and acetylene cylinders of the same capacity will be emptied at the same time.
05. The length of hacksaw blade is the distance between the outside edges of the holes which fits over the pins.
06. When two pieces of different metals are to be welded by projection welding, then the projection should be made on the metal piece having ________ conductivity.
07. Fin is a casting defect which is due to thin projections of metal not intended as a part of casting.
08. Shrinkage allowance is made by adding to external dimensions and subtracting from internal dimensions.
09. An oxidising flame is obtained when equal volumes of oxygen and acetylene are supplied.
10. The operation of cutting a number of holes evenly spaced in a regular pattern on a sheet of metal is called perforating.
11. When two metal pieces of different thicknesses are to be welded by projection welding, then the projections should be made on ________ metal piece.
12. A process used for making thin phosphate coating on steel is called Parkerising.
13. The welding set up is said to have reversed polarity when the work is connected to the negative terminal and the electrode holder to the positive terminal.
14. A saw which cuts wood during the return stroke of the saw is known as
15. Scab is a casting defect which occurs as sand patches on the upper surface of a casting.
16. Forming is the operation of removing metal to the desired shape from the edge of a plate.
17. The vertical welding does not require plate edge preparation up to 16 mm thickness.
18. In electric resistance welding, pressure is applied just after the completion of current.
19. When the weld is made from left to right, it is known as backhand welding.
20. Metal patterns require ________ draft allowance than wooden patterns.