Workshop Technology Practice Test - Set 05

Practice Test: Question Set - 05

1. The draft or taper allowance on casting is generally
    (A) 1 to 2 mm/m
    (B) 2 to 5 mm/m
    (C) 5 to 10 mm/m
    (D) 10 to 15 mm/m

2. Thermit, used in Thermit welding, is a mixture of
    (A) Charcoal and iron oxide
    (B) Charcoal and aluminium
    (C) Iron oxide and aluminium
    (D) Charcoal, iron oxide and aluminium

3. The process of increasing the cross-section of a bar at the expense of its length, is called
    (A) Drawing down
    (B) Upsetting
    (C) Spinning
    (D) Peening

4. For welding plates of thickness less than 5 mm, its edges
    (A) Do not require bevelling
    (B) Should be bevelled to a single-V or U-groove
    (C) Should have a double-V or U-groove on one side
    (D) Should have a double-V or U-groove on both sides

5. Which of the following welding process uses non-consumable electrodes?
    (A) TIG welding
    (B) MIG welding
    (C) Manual arc welding
    (D) Submerged arc welding

6. The material which can be best cut with oxygen cutting process is
    (A) Mild steel
    (B) Brass
    (C) Copper
    (D) Aluminium

7. Swab is used for
    (A) Smoothing and cleaning out depressions in the mould
    (B) Cleaning the moulding sand
    (C) Moistening the sand around the edge before removing pattern
    (D) Reinforcement of sand in the top part of the moulding box

8. For arc welding
    (A) Alternating current with high frequency is used
    (B) Alternating current with low frequency is used
    (C) Direct current is used
    (D) Any one of these

9. A file removes the metal during
    (A) Forward stroke
    (B) Return stroke
    (C) Both forward and return strokes
    (D) None of these

10. Riddle is used for
    (A) Smoothing and cleaning out depressions in the mould
    (B) Cleaning the moulding sand
    (C) Moistening the sand around the edge before removing pattern
    (D) Reinforcement of sand in the top part of moulding box

11. The purpose of a gate is to
    (A) Delivers molten metal into the mould cavity
    (B) Act as a reservoir for the molten metal
    (C) Feed the molten metal to the casting in order to compensate for the shrinkage
    (D) Delivers molten metal from pouring basin to gate

12. The oxyacetylene gas used in gas welding produce a flame temperature of
    (A) 1800°C
    (B) 2100°C
    (C) 2400°C
    (D) 3200°C

13. In order to produce uniform packing of sand in the moulds, a _________ is used.
    (A) Sand slinger
    (B) Squeezing machine
    (C) Jolt machine
    (D) Stripper plate machine

14. Carburising flame is used to weld
    (A) Steel, cast iron, copper, aluminium etc
    (B) Brass and bronze
    (C) Hard surfacing materials such as stellite
    (D) All of these

15. A basic shaft is one whose
    (A) Lower deviation is zero
    (B) Upper deviation is zero
    (C) Lower and upper deviations are zero
    (D) None of these

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Workshop Technology:
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