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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 


  • Workshop Technology problems


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    • 1. The two elements of a pair are said to form a __________ when they permit relative motion between them.

    • Options
    • A. open pair
    • B. kinematic pair
    • Discuss
    • 2. The sliding pairs, turning pairs and screw pairs form lower pairs.

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. A pair of friction discs is an example of rolling pair.

    • Options
    • A. True
    • B. False
    • Discuss
    • 4. The pressure angle of a cam is the angle between the direction of the follower motion and a normal to the

    • Options
    • A. pitch circle
    • B. base circle
    • C. pitch curve
    • D. prime circle
    • Discuss
    • 5. A shaft has an attached disc at the centre of its length. The disc has its centre of gravity located at a distance of 2 mm from the axis of the shaft. When the shaft is allowed to vibrate in its natural bow-shaped mode, it has a frequency of vibration of 10 rad/s. When the shaft is rotated at 300 r.p.m., it will whirl with a radius of

    • Options
    • A. 2 mm
    • B. 2.22 mm
    • C. 2.50 mm
    • D. 3.0 mm
    • Discuss
    • 6. The blank diameter used in thread rolling will be

    • Options
    • A. equal to minor diameter of the thread
    • B. equal to pitch diameter of the thread
    • C. a little larger than the minor diameter of the thread
    • D. a little larger than the pitch diameter of the thread
    • Discuss
    • 7. Metal patterns are used for

    • Options
    • A. small castings
    • B. large castings
    • C. complicated castings
    • D. large scale production of castings
    • Discuss
    • 8. The draft or taper allowance on casting is generally

    • Options
    • A. 1 to 2 mm/m
    • B. 2 to 5 mm/m
    • C. 5 to 10 mm/m
    • D. 10 to 15 mm/m
    • Discuss
    • 9. A taper provided on the pattern for its easy and clean withdrawl from the mould is known as

    • Options
    • A. machining allowance
    • B. draft allowance
    • C. shrinkage allowance
    • D. distortion allowance
    • Discuss
    • 10. The centrifugal casting method, is used for casting articles of

    • Options
    • A. symmetrical shape about vertical axis
    • B. symmetrical shape about horizontal axis
    • C. irregular shape
    • D. non-ferrous metal only
    • Discuss


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