On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by_______________?

Related Mcqs:

1. On Mollier chart, flow through turbine is represented by ________________?

   A. horizontal straight line
   B. vertical straight line
   C. straight inclined line
   D. curved line
   E. none of the above

2. The dry saturated steam at very high pressure (150-200 kg/cm2) when throttled to atmosphere will become_______________?

   A. wet
   B. superheated
   C. remain dry saturated
   D. dry
   E. none of the above

3. In a throttling process_________________?

   A. heat transfer takes place
   B. work is done by the expanding steam
   C. internal energy of steam changes
   D. all of the above
   E. none of the above

4. In a throttling process________________?

   A. steam temperature remaisn constant
   B. steam pressure remains constant
   C. steam enthalpy remains constant
   D. steam entropy remains constant
   E. steam volume remains constant

5. On Millier chart, the constant pressure lines_________________?

   A. diverge from left to right
   B. diverge from right to left
   C. are equally spaced throughout
   D. first rise up and then fall
   E. none of the above

6. The high pressure boiler is oiie producing steam at a pressure more than_________________?

   A. atmospheric pressure
   B. 5 kg/cm2
   C. 10 kg/cm2
   D. 40 kg/cm2
   E. 75-80 kg/cm2

7. The dry saturated steam at very low pressure, (5-10 kg/cm2) when throttled to atmosphere will become________________?

   A. wet
   B. superheated
   C. remain dry satruated
   D. dry
   E. none of the above

8. Water at pressure of 4 kg/cm2 and 160°C temperature when exposed to atmosphere will_________________?

   A. boil
   B. flash i.e. get converted into steam
   C. remain as it was
   D. cool down
   E. none of the above

9. Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be_______________?

   A. 1000 kg
   B. 4000 kg
   C. 2000 kg
   D. 8000 kg
   E. 16000 kg

10. Steam exhaust from high pressure turbine is reheated in _____________________?

    A. boiler drum
    B. superheater tubes
    C. economiser
    D. a separate coil
    E. a separate coil located in convection path