Water gas is produced by ___________________ ?

Related Mcqs:

1. Producer gas is produced by_____________________?

   A. carbonisation of coal
   B. passing steam over incandescent coke
   C. passing air and a large amount of steam over waste coal at about 65°C
   D. partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
   E. same way as the natural gas

2. The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is_______________?

   A. low
   B. high
   C. same
   D. low/high depending on make and type
   E. unpredictable

3. Maximum temprature in a gas turbine is of the order of COMPRESSORS, GAS TURBINES AND JET ENGINES______________________?

   A. 2500°C
   B. 2000°C
   C. 1500°C
   D. 1000°C
   E. 700°C

4. Water is injected in gas turbine cycle to___________________?

   A. control temperature
   B. control output of turbine
   C. control fire hazards
   D. increase efficiency
   E. it is never done

5. The thrust on the rotor in a centrifugal compressor is produced by________________?

   A. radial component
   B. axial component
   C. tangential component
   D. resultant component

6. Which is false statement about air receivers ___________________?

   A. These are used to dampen pulsations ,
   B. These act as reservoir to- take care of sudden demands
   C. These increase compressor efficiency
   D. These knock out some oil and moisture
   E. These reduce frequent on/off operation of compressors

7. During base load operation, the best method of controlling compressor is ___________________?

   A. start-stop motor
   B. constant speed unloader
   C. relief valve
   D. variable speed
   E. none of the above

8. The vloumetric efficiency of compressor with increase in compression ratio will ___________________?

   A. increase
   B. decrease
   C. remain same
   D. may increase/decrease depending on clearance volume
   E. none of the above

9. Surging phenomenon in centrifugal com-pressor depends on ___________________?

   Pick up wrong statement ?
   A. mass flow rate
   B. pressure ratio
   C. change in load
   D. stagnation pressure at the outlet
   E. all of the above

10. The power available for take off and climb in case of turbojet engine as compared to reciprocating engine is ___________________?

    A. less
    B. more
    C. same
    D. may be less or more depending on ambient conditons
    E. unpredictable