Engineers Day (ME)

A flat surface can be produced by a lathe machine, if the cutting tool moves _____

• parallel to the axis of rotation of the workpiece

• perpendicular to the axis of rotation of workpiece

• at an angle of 45⁰

• at an angle of 60⁰

The welding process by Metal Inert-Gas (MIG) welding is

• slower than the welding process by Tungsten Inert-Gas (TIG) welding

• faster than the welding process by Tungsten Inert-Gas (TIG) welding

• at same speed as the welding process by Tungsten Inert-Gas (TIG) welding

• at unpredictable speed

What is swing over carriage?

• The maximum diameter of workpiece that can be rotated over lathe saddle

• The maximum diameter of workpiece that can be rotated over the bed ways

• The minimum diameter of workpiece that can be rotated over lathe saddle

• The minimum diameter of workpiece that can be rotated over the bed ways

Why are the plasticisers added with polymers?

• To hold other constituents of plastic together

• To reduce the cost and enhance the strength and hardness of plastics

• To improve flexibility and to reduce the temperature and pressure required for moulding of plastics

• None of the above

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

• 1-(E), 2-(F), 3-(A), 4-(B), 5-(C), 6-(D)

• 1-(E), 2-(F), 3-(B), 4-(A), 5-(D), 6-(C)

• 1-(F), 2-(E), 3-(A), 4-(B), 5-(C), 6-(D)

• 1-(F), 2-(E), 3-(B), 4-(A), 5-(D), 6-(C)

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

• 1-(E), 2-(F), 3-(A), 4-(B), 5-(C), 6-(D)

• 1-(E), 2-(F), 3-(B), 4-(A), 5-(D), 6-(C)

• 1-(F), 2-(E), 3-(A), 4-(B), 5-(C), 6-(D)

• 1-(F), 2-(E), 3-(B), 4-(A), 5-(D), 6-(C)

Castings are usually

• costlier than forgings

• cheaper than forgings

• at the same rate as forging for similar metal

• none of the above

Specific gravity of the plastics is usually

• less than the specific gravity of metals

• more than the specific gravity of metals

• similar to the specific gravity of metals

• Unpredictable

Thermosetting materials are

• the plastics which can be softened even after they have set and hardened

• the plastics which require heat and pressure to mould them into shape

• both a. and b.

• none of the above

The sand in its natural or moist state is called as

• green sand

• loam sand

• dry sand

• none of the above