Home / Mechanical Engineering / Basic Mechanical Engineering :: Basic Mechanical Engineering

Mechanical Engineering :: Basic Mechanical Engineering

  1. The cost of lubricating oils in a machine shop may be classified as
  2. A.
    direct material cost
    B.
    prime cost
    C.
    factory overhead cost
    D.
    administrative overhead cost

  3. The gudgeion pin connects the
  4. A.
    connecting rod and the crank
    B.
    piston and crank
    C.
    crank and connecting rod
    D.
    piston and the connecting rod

  5. The inlet valve in a 4 stroke IC engine opens
  6. A.
    after TDC
    B.
    before BDC
    C.
    before TDC
    D.
    after BDC

  7. In a six cylinder 4 stroke petrol engine running at 2000 RPM, the cam shaft runs at
  8. A.
    1000 RPM
    B.
    2000 RPM
    C.
    6000 RPM
    D.
    500 RPM

  9. One of the following type of pumps is used in a diesel engine
  10. A.
    jet pump
    B.
    reciprocating pump
    C.
    gear pump
    D.
    axial flow pump

  11. A 4 cylinder 4 stroke diesel engine has 3000 power strokes per minute; its speed in RPM is
  12. A.
    3000
    B.
    6000
    C.
    750
    D.
    1500

  13. The approximate air fuel ratio in a diesel engine under rated conditions is
  14. A.
    12 to 1
    B.
    20 to 1
    C.
    15 to 11
    D.
    80 to 1

  15. Indicated thermal efficiency of an engine is
  16. A.
    Brake power/Indicated power
    B.
    Indicated power/Mechanical efficiency
    C.
    Brake thermal efficiency/Mechanical efficiency
    D.
    Brake power/Mechanical efficiency

  17. The kinetic energy of a body of a mass 2kg, when it falls in air from rest through a height of 5 m is
  18. A.
    98.1 J
    B.
    9.8 Nm
    C.
    10 n
    D.
    20 j