Efficiency of rankine cycle can be increased by_________________?

Related Mcqs:

1. The thermal efficiency of a two cycle engine as compared to four cycle engine is_________________?

   A. more
   B. less
   C. same
   D. more upto some load and then less
   E. it may be less or more depending on several other factors

2. The efficiency of the ideal diesel cycle is ________ than that of Otto cycle, for the same compression ratio

   A. Higher
   B. Lower
   C. Equal
   D. None of these

   Submitted by: Faheem Zaman Dhaunroo

3. Efficiency of a thermal cycle increases by ________________?

   A. regeneration
   B. reheating of steam
   C. both A. and B.
   D. cooling of steam
   E. none of the above

4. 100% efficiency of a thermal cycle cannot be achieved because of __________________?

   A. frictional losses
   B. it is not possible to achieve 0°K temperature
   C. leakage
   D. non-availability of ideal substance
   E. none of the above

5. Hot air standard diesel cycle efficiency with increase in value of C„_______________?

   A. increases
   B. decreases
   C. remains unaffected
   D. depends on other factors
   E. unpredictable

6. The thermal efficiency of a semi-diesel cycle having fixed compression ratio and fixed quantity of heat, with increase in pressure ratio will_______________?

   A. increase
   B. decrease
   C. remain unaffected
   D. increase/decrease depending upon engine capacity
   E. first increase and then decrease

7. In locomotives, the draught is produced by_________________?

   A. chimney
   B. induced draft fan
   C. both combined A. and B.
   D. steam jet draught
   E. none of the above

8. Ignition timing of a multicylider petrol engine can be adjusted by_________________?

   A. rotating the crank
   B. adjusting the spark plug gap
   C. adjusting ignition coil position
   D. rotating the distributor
   E. delaying the spark by increasing capacitor in ignition circuit

9. Recrystallisation temperature can belowered by_________________?

   A. purification of metal
   B. grain refinement
   C. working at lower temperature
   D. all of the above
   E. none of the above

10. An ideal regenerative cycle is ______________________?

    A. equal to carnot cycle
    B. less than carnot cycle
    C. more than carnot cycle
    D. could be anything
    E. none of the above