L&T ECC – Test Pattern

L & T ECC Technical Questions:

  1. When a body is in motion, the type of friction exeprienced by the body is:
    • Rolling friction
    • Limiting friction
    • Dynamic friction
    • Static friction
  2. Charles' Law states that
    • p/T= constant (v is kept constant)
    • p.v= constant (T is kept constant)
    • v/T = constant (p is kept constant)
    • None of these
  3. What should be the increase in length of the pendulum, in order to triple the period of swing?
    • Increased by 8-fold
    • Incraesed by 9-fold
    • Increased by 7-fold
    • No change
  4. The moment of interia of a square of side a about its base is:
    • a2/3
    • a4/2
    • a4/3
    • a2/2
  5. The cutting angle , for drilling stainless steel should be:
    • 90°
    • 150°
    • 180°
    • 135°
  6. When two elements of a pair have surface contact when in motion, it is said to be :
    • Higher pair
    • Lower pair
    • Rolling pair
    • None of these