1) Which characteristic of material is used in forging process?
a. characteristics of elasticity of material
b. characteristics of ductility of material
c. characteristics of plasticity of material
d. none of the above
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2) How does the ability of material to withstand unpredictable loads change after forging?
a. The ability of material to withstand unpredictable loads increases after forging
b. The ability of material to withstand unpredictable loads decreases after forging
c. The ability of material to withstand unpredictable loads does not change after forging
d. Unpredictable
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Answer
Explanation
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ANSWER: The ability of material to withstand unpredictable loads increases after forging
Explanation:
No explanation is available for this question!
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3) Specific gravity of the plastics is usually
a. less than the specific gravity of metals
b. more than the specific gravity of metals
c. similar to the specific gravity of metals
d. Unpredictable
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4) The process of combining two or more distinct polymer molecules to form a new product with different characteristics is called as
a. binding
b. stabilizing
c. filling
d. blending
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5) Power consumption in D.C. arc welding is
a. less than the power consumption in A.C. arc welding
b. more than the power consumption in A.C. arc welding
c. similar to the power consumption in A.C. arc welding
d. very difficult to calculate
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Answer
Explanation
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ANSWER: more than the power consumption in A.C. arc welding
Explanation:
No explanation is available for this question!
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6) Which type of process the machining can be?
a. Cold working
b. Hot working
c. Both a. and b.
d. None of the above
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7) Which type of arc welding is suitable for joining non-ferrous metals?
a. D.C. Arc welding
b. A.C. Arc welding
c. Both D.C. As well as A.C. Arc welding
d. None of the above
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8) Which of the following options best describes the centre lathes?
a. Machining machines
b. Shaping machines
c. Turning machines
d. None of the above
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9) Castings are usually
a. costlier than forgings
b. cheaper than forgings
c. at the same rate as forging for similar metal
d. none of the above
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10) Match the following Tools used in smithy in Group 1 with their Applications in Group 2 and select the correct option.
1. Sledge hammers, straight, flat and cross peen ------------- A. To nick the bar and to shape the cold work
2. Smith ball peen hammer ------------------------------------------ B. To make recesses of any shape in hot metal
3. Punches --------------------------------------------------------------- C. To cut plates to curves
4. Hardie ------------------------------------------------------------------- D. To forge art, bend and shape the work
5. Anvil ---------------------------------------------------------------------- E. To forge light and medium work
6. Gouge -------------------------------------------------------------------- F. To forge big jobs
a. 1-(E), 2-(F), 3-(A), 4-(B), 5-(C), 6-(D)
b. 1-(E), 2-(F), 3-(B), 4-(A), 5-(D), 6-(C)
c. 1-(F), 2-(E), 3-(A), 4-(B), 5-(C), 6-(D)
d. 1-(F), 2-(E), 3-(B), 4-(A), 5-(D), 6-(C)
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11) The materials such as lead and barium, which are added with polymers to minimize the effect of heat, sunlight and ozone are called as
a. binders
b. blenders
c. stabilisers
d. fillers
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12) Why are the plasticisers added with polymers?
a. To hold other constituents of plastic together
b. To reduce the cost and enhance the strength and hardness of plastics
c. To improve flexibility and to reduce the temperature and pressure required for moulding of plastics
d. None of the above
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Answer
Explanation
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ANSWER: To improve flexibility and to reduce the temperature and pressure required for moulding of plastics
Explanation:
No explanation is available for this question!
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13) When the tool of centre lathe moves perpendicular to the axis of rotation,
a. it produces a cylindrical surface
b. it produces a flat surface
c. it produces a tapered surface
d. none of the above
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14) The foundation of the centre lathe is called as
a. carriage
b. tray
c. base
d. bed
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15) What is the process, in which the metal is caused to flow through a restricted orifice to create an extremely elongated strip of uniform and comparatively smaller cross-sectional area, called?
a. Rolling
b. Extrusion
c. Drawing
d. Spinning
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16) In circular drawing process, when the depth of drawing is more than the diameter of the die, then the process is called as
a. forced drawing
b. hollow drawing
c. deep drawing
d. all of the above
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17) Chances of crack propagation are more in
a. cold working process
b. hot working process
c. both a. and b.
d. none of the above
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18) The centre lathes receive their power through
a. headstock
b. tailstock
c. both a. and b.
d. none of the above
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19) Consider the following diagram of tailstock.
The part shown in blue color in the below diagram is called as
a. tailstock clamping lever
b. tailstock dead centre
c. tailstock spindle
d. none of the above
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20) Which of the following is not a part of carriage of the centre lathe?
a. Tool post
b. Apron
c. Compound rest
d. Gear box controls
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21) What is swing over carriage?
a. The maximum diameter of workpiece that can be rotated over the bed ways
b. The minimum diameter of workpiece that can be rotated over the bed ways
c. The maximum diameter of workpiece that can be rotated over lathe saddle
d. The minimum diameter of workpiece that can be rotated over lathe saddle
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Answer
Explanation
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ANSWER: The maximum diameter of workpiece that can be rotated over lathe saddle
Explanation:
No explanation is available for this question!
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22) Which current is used in Tungsten Inert-Gas (TIG) welding?
a. Only A.C. can be used as welding current
b. Only D.C. can be used as welding current
c. Both A.C. and D.C. can be used as welding current
d. None of the above
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Answer
Explanation
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ANSWER: Both A.C. and D.C. can be used as welding current
Explanation:
No explanation is available for this question!
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23) The welding process by Metal Inert-Gas (MIG) welding is
a. slower than the welding process by Tungsten Inert-Gas (TIG) welding
b. faster than the welding process by Tungsten Inert-Gas (TIG) welding
c. at same speed as the welding process by Tungsten Inert-Gas (TIG) welding
d. at unpredictable speed
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Answer
Explanation
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ANSWER: faster than the welding process by Tungsten Inert-Gas (TIG) welding
Explanation:
No explanation is available for this question!
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24) Which of the following statements are true for ultrasonic welding?
1. Productivity of ultrasonic welding is high
2. Thin pieces can be welded to thicker pieces by ultrasonic welding
3. Ultrasonic welds contain foreign inclusions
4. Post cleaning of welds is necessary in ultrasonic welding
5. Preparation required for ultrasonic welding process is very little
a. (1), (2) and (4)
b. (2), (3) and (4)
c. (1), (3) and (5)
d. (1), (2) and (5)
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