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Home ‣ Mechanical Engineering ‣ Hydraulic Machines See What Others Are Saying!
  • Question

  • The mechanical efficiency of an impulse turbine is


  • Options
  • A. ratio of the actual power produced by the turbine to the energy actually supplied by the turbine
  • B. ratio of the actual work available at the turbine to the energy imparted to the wheel
  • C. ratio of the Work done on the wheel to the energy of the jet
  • D. none of the above

  • Correct Answer
  • ratio of the actual work available at the turbine to the energy imparted to the wheel 

    • More questions

    • 1. Hydrogen is the __________ substance.

    • Options
    • A. lightest
    • B. heaviest
      • Discuss
    • 2. Cemented carbide tools are generally poor in shear.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 3. Hot piercing is extensively used for making bolts and nuts.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 4. A Francis turbine is an outward flow reaction turbine.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. The negative acceleration is called retardation.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. When the spring of a watch is wound, it will possess

    • Options
    • A. strain energy
    • B. kinetic energy
    • C. heat energy
    • D. electrical energy
      • Discuss
    • 7. An alloy of copper, tin and zinc is known as

    • Options
    • A. brass
    • B. bronze
    • C. gun metal
    • D. muntz metal
      • Discuss
    • 8. In electro-chemical machining, the gap between the tool and work is kept as

    • Options
    • A. 0.1 mm
    • B. 0.25 mm
    • C. 0.4 mm
    • D. 0.75 mm
      • Discuss
    • 9. The pressure of steam at throat of a steam nozzle is called critical pressure.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 10. Which part of the automobile tyre is subjected to greatest flexing action?

    • Options
    • A. Bead
    • B. Side wall
    • C. Shoulder
    • D. Tread
      • Discuss

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