RAILWAY ENGINEERING QUIZ

Cutting and forming operations can be performed in a single operation in a

Compound die

Simple die

Progressive die

Combination die

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In sheet metal work, he cutting force on the tool can be reduced by

Providing shear on tool

Increasing the hardness of die

Increasing the hardness of tool

Grinding the cutting edges sharp

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Seam welding is best adopted for metal thickness ranging from

3 to 5 mm

8 to 10 mm

5 to 8 mm

0.025 to 3 mm

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When the dimension is expressed as 20 -0.025 ⁺⁰∙⁰³⁵, then the basic size is

20.025 mm

20 mm

20.035 mm

19.975 mm

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The process of decreasing the cross-section of a bar and increasing its length, is called

Spinning

Drawing down

Upsetting

Peening

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The type of file used for a wood work is

Any one of the listed here

Double cut file

Single cut file

Rasp cut file

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In electric resistance welding, pressure applied varies from

25 to 55 MPa

5 to 10 MPa

10 to 25 MPa

1 to 5 MPa

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For arc welding

Alternating current with low frequency is used

Direct current is used

Any one of these

Alternating current with high frequency is used

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Cores are used to

All of these

Improve mould surface

Form internal cavities in the casting

Form a part of a green sand mould

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For gas welding, the pressure desired at the welding torch for acetylene is

560 to 840 kN/m²

280 to 560 kN/m²

7 to 103 kN/m²

70 to 280 kN/m²

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