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  • Question
  • The electrodes used in spot welding have a tip of


  • Options
  • A. stainless steel
  • B. aluminium
  • C. copper
  • D. brass

  • Correct Answer
  • copper 


  • More questions

    • 1. The work or surface speed for cylindrical grinding varies from

    • Options
    • A. 5 to 10 m/min
    • B. 10 to 20 m/min
    • C. 20 to 30 m/min
    • D. 40 to 60 m/min
    • Discuss
    • 2. Ultra-sonic machining is best suited for

    • Options
    • A. tool steels
    • B. sintered carbides
    • C. glass
    • D. all of these
    • Discuss
    • 3. In a plain milling cutter, the chip space between the back of one tooth and the face of the next tooth is called

    • Options
    • A. face
    • B. fillet
    • C. gash
    • D. land
    • Discuss
    • 4. The silicon carbide abrasive is chiefly used for grinding

    • Options
    • A. cemented carbide
    • B. ceramic
    • C. cast iron
    • D. all of these
    • Discuss
    • 5. Gears can be best produced on mass production by

    • Options
    • A. shaping
    • B. casting
    • C. forming
    • D. hobbing
    • Discuss
    • 6. A thin cylindrical shell of diameter (d) length (l) and thickness (t) is subjected to an internal pressure (p). The longitudinal stress in the shell is

    • Options
    • A. pd/t
    • B. pd/2t
    • C. pd/4t
    • D. pd/6t
    • Discuss
    • 7. The purpose of a thermostat in an engine cooling system is to

    • Options
    • A. prevent the coolant from boiling
    • B. allow the engine to warm up quickly
    • C. indicate the coolant temperature
    • D. pressurise the system to raise the boiling point
    • Discuss
    • 8. In up milling, the thickness of chip is

    • Options
    • A. minimum at the beginning of the cut and maximum at the end of the cut
    • B. maximum at the beginning of the cut and minimum at the end of the cut
    • C. uniform throughout the cut
    • D. none of these
    • Discuss
    • 9. In natural circulation steam boilers, the circulation of water is by convection currents which are set up during the heating of water.

    • Options
    • A. Correct
    • B. Incorrect
    • Discuss
    • 10. In a coupling rod of a locomotive, each of the four pairs is a __________ pair.

    • Options
    • A. sliding
    • B. turning
    • C. rolling
    • D. screw
    • Discuss


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