Workshop Technology Multiple Choice Questions - Set 12

Practice Test: Question Set - 12


1. The diaphragm moulding machine is used to
    (A) Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
    (B) Ram the sand harder at the back of the mould and softer on the pattern face
    (C) Produce uniform packing of sand in the mould
    (D) Give uniform sand hardness throughout the mould

2. The current in electric resistance welding can be regulated by
    (A) Varying the input supply
    (B) Changing the primary turns of the transformer
    (C) Changing the secondary turns of the transformer
    (D) Any one of the above

3. According to Indian standard specifications, 100 H6/g5 means that.
    (A) Basic size is 100 mm
    (B) Actual size is 100 mm
    (C) Difference between the actual size and basic size is 100 mm
    (D) None of the above

4. The operation of producing cup shaped parts from flat sheet metal blanks by bending and plastic flow of metal, is known as
    (A) Drawing
    (B) Squeezing
    (C) Coining
    (D) Planishing

5. In a four high rolling mill, there are four rolls out of which
    (A) One is working roll and three are backing up rolls
    (B) Two are working rolls and two are backing up rolls
    (C) Three are working rolls and one is backing up roll
    (D) All of the four are working rolls

6. In a hot chamber die casting machine
    (A) Ferrous alloys with low melting temperature are casted
    (B) Ferrous alloys with high melting temperature are casted
    (C) Nonferrous alloys with low melting temperature are casted
    (D) Nonferrous alloys with high melting temperature are casted

7. A pattern maker's shrinkage rule considers
    (A) All pattern allowances
    (B) Only shrinkage allowance
    (C) All materials to be cast
    (D) All materials of the pattern

8. Tandem drawing of wires and tubes is necessary because
    (A) It is not possible to reduce at one stage
    (B) Annealing is needed between stages
    (C) Accuracy in dimensions is not possible otherwise
    (D) Surface finish improves after every drawing stage

9. Seam welding is a
    (A) Continuous spot welding process
    (B) Multi-spot welding process
    (C) Arc welding process
    (D) Process used for joining round bars

10. The recrystallisation temperature of steel is
    (A) 400°C
    (B) 600°C
    (C) 800°C
    (D) None of these

11. When a pattern is made in three parts, the top part, is known as a
    (A) Drag
    (B) Cheek
    (C) Cope
    (D) None of these

12. The temperature of the inner luminous cone of neutral flame is about
    (A) 1000°C
    (B) 1250°C
    (C) 2100°C
    (D) 3200°C

13. The welding process used to join the ends of two pipes of uniform cross-section, is
    (A) Spot welding
    (B) Seam welding
    (C) Projection welding
    (D) Upset butt welding

14. The fullers are used
    (A) For finishing flat surfaces
    (B) For necking down a piece of work
    (C) For punching a hole
    (D) To finish the punched hole

15. In a compound die
    (A) Only one operation is performed at each stroke of the ram
    (B) Two or more operations are performed simultaneously at the single stroke of the ram
    (C) Two or more cutting operations are performed at one station of the press in every stroke of the ram
    (D) Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram

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Workshop Technology:
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