Quiz

Question: In a reaction turbine
Options:
A. The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
B. The expansion of steam takes place partly in the fixed blades and partly in the moving blades
C. The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
D. The pressure and temperature of steam remains constant
Answer: Option B

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More Questions on This Topic :

Question 1. The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. the degree of reaction will be
  1.     0.4
  2.     0.56
  3.     0.67
  4.     1.67
Answer: Option A
Question 2. The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam.
  1.     More
  2.     Less
  3.     Same
  4.     None of these
Answer: Option B
Question 3. Expanding steam to a very low pressure (high vacuum) in steam engines is
  1.     Desirable
  2.     Economical
  3.     Essential
  4.     Uneconomical
Answer: Option D
Question 4. In a reaction turbine
  1.     The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
  2.     The expansion of steam takes place partly in the fixed blades and partly in the moving blades
  3.     The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
  4.     The pressure and temperature of steam remains constant
Answer: Option B
Question 5. The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. the degree of reaction will be
  1.     0.4
  2.     0.56
  3.     0.67
  4.     1.67
Answer: Option A
Question 6. The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam.
  1.     More
  2.     Less
  3.     Same
  4.     None of these
Answer: Option B

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