Workshop Technology Online Quiz

Mechanical Engineering Online Quiz: Workshop Technology


1. The low pressure acetylene is produced at the welding site by the chemical reaction between water and calcium carbonate.
Correct
Incorrect

2. The correct sequence for preparing a billet for extrusion process is pickling, alkaline cleaning, phosphate coating and lubricating with reactive soap.
Yes
No

3. 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.
Correct
Incorrect

4. If neutral flame is used in oxyacetylene welding, both oxygen and acetylene cylinders of the same capacity will be emptied at the same time.
Correct
Incorrect

5. The length of hacksaw blade is the distance between the outside edges of the holes which fits over the pins.
Agree
Disagree

6. 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.
Lower
Higher

7. Fin is a casting defect which is due to thin projections of metal not intended as a part of casting.
Correct
Incorrect

8. Shrinkage allowance is made by adding to external dimensions and subtracting from internal dimensions.
Agree
Disagree

9. An oxidising flame is obtained when equal volumes of oxygen and acetylene are supplied.
True
False

10. The operation of cutting a number of holes evenly spaced in a regular pattern on a sheet of metal is called perforating.
Agree
Disagree

11. When two metal pieces of different thicknesses are to be welded by projection welding, then the projections should be made on ________ metal piece.
Thinner
Thicker

12. A process used for making thin phosphate coating on steel is called Parkerising.
Correct
Incorrect

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.
Agree
Disagree

14. A saw which cuts wood during the return stroke of the saw is known as
Push saw
Pull saw or draw saw

15. Scab is a casting defect which occurs as sand patches on the upper surface of a casting.
True
False

16. Forming is the operation of removing metal to the desired shape from the edge of a plate.
Correct
Incorrect

17. The vertical welding does not require plate edge preparation up to 16 mm thickness.
Correct
Incorrect

18. In electric resistance welding, pressure is applied just after the completion of current.
True
False

19. When the weld is made from left to right, it is known as backhand welding.
Agree
Disagree

20. Metal patterns require ________ draft allowance than wooden patterns.
More
Less

     Score =

Correct answers:

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