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Home Mechanical Engineering Thermodynamics See What Others Are Saying!
  • Question
  • In an ideal gas turbine plant, it is assumed that the compression and expansion processes are


  • Options
  • A. isothermal
  • B. isentropic
  • C. polytropic
  • D. none of these

  • Correct Answer
  • isentropic 


  • More questions

    • 1. The knocking tendency in spark ignition engines can be decreased by adding dopes like tetra ethyle lead and ethylene dibromide.

    • Options
    • A. Agree
    • B. Disagree
    • Discuss
    • 2. The parts of circular cross-section which are symmetrical about the axis of rotation are made by

    • Options
    • A. hot forging
    • B. hot spinning
    • C. hot extrusion
    • D. hot drawing
    • Discuss
    • 3. The principle of transmissibility of forces states that, when a force acts upon a body, its effect is

    • Options
    • A. same at every point on its line of action
    • B. different at different points on its line of action
    • C. minimum, if it acts at the centre of gravity of the body
    • D. maximum, if it acts at the centre of gravity of the body
    • Discuss
    • 4. The section modulus of a circular section about an axis through its C.G., is

    • Options
    • A. ?d2/4
    • B. ?d2/16
    • C. ?d3/16
    • D. ?d3/32
    • Discuss
    • 5. In oblique cutting system, the cutting edge of the tool

    • Options
    • A. may clear the width of the workpiece
    • B. may or may not clear the width of the workpiece
    • C. may not clear the width of the workpiece
    • D. should always clear the width of the workpiece
    • Discuss
    • 6. The device for smoothening out the power impulses from the engine is called

    • Options
    • A. clutch
    • B. differential
    • C. flywheel
    • D. torque converter
    • Discuss
    • 7. Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ? = Density of fluid, cp = Specific heat at constant pressure, and ? = Coefficient of absolute viscosity)

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 8. The forced-fed lubrication system means that the oil is delivered to the engine by

    • Options
    • A. gravity
    • B. the pressure created by the oil pump
    • C. splashing action of the crankshaft
    • D. none of these
    • Discuss
    • 9. All the steel trusses of the bridges, have one of their end roller supported, and other end hinged. The main advantage of such a support is that the truss remains stable.

    • Options
    • A. True
    • B. False
    • Discuss
    • 10. Free convection flow depends on

    • Options
    • A. density
    • B. coefficient of viscosity
    • C. gravitational force
    • D. all of these
    • Discuss


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