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Friction Test -...

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  • Question 1
    1 / -0

    Friction causes wastage of energy in the form of

  • Question 2
    1 / -0

    Which of the following is an advantage of friction?

  • Question 3
    1 / -0

    Which of the following activities increases friction in the corresponding case?

  • Question 4
    1 / -0

    A force of 50 N is required to make a slider move with uniform speed over the steel rail of a machine. Which of the following cannot be the value of the force required to move the slider with the same speed having oiled the rail?

  • Question 5
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    The efficiency of a gear train is 75%. Which of the following can be its efficiency after greasing it?

  • Question 6
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    When a body rolls over the surface of another body, the resistance offered to its motion is called

  • Question 7
    1 / -0

    Under identical conditions, which of the following is true for a given body?

  • Question 8
    1 / -0

    Under which of the following phases of its flight, will a helicopter experience the maximum drag from air?

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